Reinforced plastics based on unsaturated-polyester resins - Determination of the residual styrene monomer content, as well as the content of other volatile aromatic hydrocarbons, by gas chromatography

ISO 4901:2011 specifies a method for the determination, by gas chromatography, of the residual styrene monomer in reinforced plastics based on unsaturated polyester (UP) resins in the polymerized state. The residual styrene monomer content is an important criterion in evaluating the degree of cure of UP resins in the polymerized state. The method can also be used for the simultaneous determination of other volatile aromatic hydrocarbons in UP resins. The method is not applicable to UP resins of high chemical resistance.

Plastiques renforcés à base de résines de polyesters non saturés — Détermination du styrène monomère résiduel, ainsi que d'autres hydrocarbures aromatiques volatils, par chromatographie en phase gazeuse

General Information

Status
Published
Publication Date
08-Aug-2011
Current Stage
9093 - International Standard confirmed
Start Date
03-Sep-2021
Completion Date
13-Dec-2025

Relations

Effective Date
18-Dec-2008

Overview - ISO 4901:2011 (Residual styrene in UP resins)

ISO 4901:2011 specifies a standardized laboratory method for determining residual styrene monomer - and other volatile aromatic hydrocarbons - in reinforced plastics based on unsaturated polyester (UP) resins, using gas chromatography (GC). The residual styrene content is an important indicator of the degree of cure of polymerized UP resins. The method covers sample preparation, extraction, calibration, GC operating requirements and result calculation. It is not applicable to UP resins of high chemical resistance.

Key topics and technical requirements

  • Analytical principle: extraction of styrene from polymerized UP resin with an organic solvent, followed by GC quantification using an internal standard and calibration curve.
  • Extraction: sample pieces cut into 1–2 mm strips, dried, then extracted (suspension) in solvent; typical standing time 15–20 hours with occasional shaking. Temperature during prep and extraction must remain ≀ 25 Β°C.
  • Solvent & internal standard: dichloromethane is specified for extraction; n‑butylbenzene is used as internal standard. Note: dichloromethane has health and safety risks; acetone/ethyl acetate are being evaluated as alternatives.
  • Gas chromatography: open, tubular fused‑silica column (capillary), carrier gas helium or nitrogen, FID detector with hydrogen/air flame. GC conditions must achieve adequate separation - peak resolution R > 1.5 between target peaks and neighboring peaks.
  • Calibration & quantification: prepare stock and multiple calibration solutions; use peak area ratios normalized to the internal standard and compute styrene content per the calibration graph.
  • Supplementary requirements: determine glass or mineral filler content (ISO 1172) if results are to be expressed on resin-only basis.
  • Safety note: the standard warns about solvent toxicity and laboratory safety practices.

Practical applications and users

Who uses ISO 4901:2011:

  • Quality control laboratories in composite and reinforced-plastics manufacturing
  • Materials engineers monitoring degree of cure and residual monomer levels
  • R&D teams developing UP resin formulations and cure cycles
  • External testing and certification labs assessing compliance with material specifications

Practical benefits:

  • Provides a reproducible, internationally accepted GC procedure for reporting residual styrene and other volatile aromatic hydrocarbons
  • Supports process control, product acceptance, failure investigation and regulatory reporting
  • Enables comparable data between laboratories through defined sample prep, calibration and chromatographic performance criteria

Related standards

  • ISO 472 - Plastics - Vocabulary (terms and definitions referenced)
  • ISO 1172 - Textile-glass-reinforced plastics - Determination of glass and mineral-filler content (calcination), used when expressing results on resin basis

Keywords: ISO 4901:2011, residual styrene monomer, unsaturated polyester (UP) resins, gas chromatography, reinforced plastics, volatile aromatic hydrocarbons, degree of cure, n‑butylbenzene, dichloromethane, FID.

Standard

ISO 4901:2011 - Reinforced plastics based on unsaturated-polyester resins -- Determination of the residual styrene monomer content, as well as the content of other volatile aromatic hydrocarbons, by gas chromatography

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Frequently Asked Questions

ISO 4901:2011 is a standard published by the International Organization for Standardization (ISO). Its full title is "Reinforced plastics based on unsaturated-polyester resins - Determination of the residual styrene monomer content, as well as the content of other volatile aromatic hydrocarbons, by gas chromatography". This standard covers: ISO 4901:2011 specifies a method for the determination, by gas chromatography, of the residual styrene monomer in reinforced plastics based on unsaturated polyester (UP) resins in the polymerized state. The residual styrene monomer content is an important criterion in evaluating the degree of cure of UP resins in the polymerized state. The method can also be used for the simultaneous determination of other volatile aromatic hydrocarbons in UP resins. The method is not applicable to UP resins of high chemical resistance.

ISO 4901:2011 specifies a method for the determination, by gas chromatography, of the residual styrene monomer in reinforced plastics based on unsaturated polyester (UP) resins in the polymerized state. The residual styrene monomer content is an important criterion in evaluating the degree of cure of UP resins in the polymerized state. The method can also be used for the simultaneous determination of other volatile aromatic hydrocarbons in UP resins. The method is not applicable to UP resins of high chemical resistance.

ISO 4901:2011 is classified under the following ICS (International Classification for Standards) categories: 83.120 - Reinforced plastics. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 4901:2011 has the following relationships with other standards: It is inter standard links to ISO 4901:1985. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 4901:2011 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 4901
Second edition
2011-08-15
Reinforced plastics based on
unsaturated-polyester resins β€”
Determination of the residual styrene
monomer content, as well as the content
of other volatile aromatic hydrocarbons,
by gas chromatography
Plastiques renforcΓ©s Γ  base de rΓ©sines de polyesters non saturΓ©s β€”
Détermination du styrène monomère résiduel, ainsi que d'autres
hydrocarbures aromatiques volatils, par chromatographie en phase
gazeuse
Reference number
Β©
ISO 2011
Β©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 ο‚· CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii Β© ISO 2011 – All rights reserved

Contents Page
Foreword . iv
Introduction . v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  Principle . 1
5  Materials . 2
6  Apparatus . 2
7  Preparation of sample . 3
8  Procedure . 3
8.1  General . 3
8.2  Preparation of extraction solvent . 3
8.3  Preparation of test solution . 3
8.4  Determination of glass and mineral content . 3
8.5  Preparation of calibration solutions . 4
8.6  Gas-chromatographic procedure . 4
9  Expression of results . 6
9.1  Calculation of results from a calibration graph . 6
9.2  Calculation of the content of styrene (or another aromatic hydrocarbon) in the original UP
resin sample . 7
9.3  Calculation of the content of styrene (or another aromatic hydrocarbon) in the pure UP
resin . 8
10  Test report . 8
Annex A (informative) Typical operating conditions . 9

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 4901 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting
materials.
This second edition cancels and replaces the first edition (ISO 4901:1985), which has been technically revised
(for details, see the Introduction).
iv Β© ISO 2011 – All rights reserved

Introduction
During the 25 years since publication of the first edition of this International Standard, ISO 4901:1985,
significant advances have been made in analytical techniques such as gas chromatography. The standard
has therefore been completely revised. The following are the main changes which have been made:
a) In addition to a gas-chromatographic method, the first edition of ISO 4901 included, as an alternative, a
classical method, Wijs' method, based on an iodometric titration. This method had been included in the
first edition for laboratories in which gas chromatography was not available. As, nowadays,
chromatography is considered to be a routine analytical tool, Wijs' method has been removed from the
standard.
b) Packed gas-chromatography columns have generally been replaced by open, tubular columns which
operate under completely different conditions. In the revised test method, therefore, only an open, tubular
column is used.
c) In addition, the gas-chromatographic method has been extended to cover not only styrene but also other
aromatic hydrocarbons which might have been used as solvents or starting materials in producing the
unsaturated polyester resin.
INTERNATIONAL STANDARD ISO 4901:2011(E)

Reinforced plastics based on unsaturated-polyester resins β€”
Determination of the residual styrene monomer content, as well
as the content of other volatile aromatic hydrocarbons, by gas
chromatography
WARNING β€” Persons using this document should be familiar with normal laboratory practice, if
applicable. This document does not purport to address all of the safety concerns, if any, associated
with its use. It is the responsibility of the user to establish appropriate safety and health practices and
to ensure compliance with any regulatory requirements.
1 Scope
This International Standard specifies a method for the determination, by gas chromatography, of the residual
styrene monomer in reinforced plastics based on unsaturated polyester (UP) resins in the polymerized state.
The residual styrene monomer content is an important criterion in evaluating the degree of cure of UP resins
in the polymerized state. The method can also be used for the simultaneous determination of other volatile
aromatic hydrocarbons in UP resins.
The method is not applicable to UP resins of high chemical resistance.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 472, Plastics β€” Vocabulary
ISO 1172, Textile-glass-reinforced plastics β€” Prepregs, moulding compounds and laminates β€” Determination
of the textile-glass and mineral-filler content β€” Calcination methods
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472 apply.
4 Principle
Styrene is extracted from the UP resin in the polymerized state using dichloromethane. The styrene in the
extract is determined by gas chromatography, using an internal standard and a calibration curve.
5 Materials
5.1 n-Butylbenzene, analytical grade, for use as an internal standard.
5.2 Dichloromethane, analytical grade, for use as the extraction solvent.
WARNING β€” Dichloromethane is harmful when swallowed, inhaled or absorbed through the skin. It
affects the central nervous system, the liver, the cardiovascular system and the blood. It causes
irritation of the skin, eyes and respiratory tract. It is also a suspected cancer hazard, the risk of cancer
depending on the level and duration of exposure.
NOTE In view of the toxicity and suspected carcinogenic characterics of dichloromethane, acetone and ethyl acetate
are being tested as replacements. If the results of this work demonstrate conclusively that either one or both of these
solvents are suitable, this International Standard will be revised accordingly.
5.3 Styrene, analytical grade, and, if relevant, other aromatic hydrocarbons, such as toluene,
ethylbenzene and Ξ±-methylstyrene, also analytical grade.
NOTE An aromatic hydrocarbon is considered to be relevant if it is used as a solvent or starting material in the UP
resin production process.
5.4 Carrier gas and FID fuel gases:
ο‚Ύ carrier gas: helium or nitrogen;
ο‚Ύ FID fuel gases: hydrogen and air.
6 Apparatus
Normal laboratory equipment and the following apparatus are required:
6.1 Cutting device, equipped with a water-cooled diamond blade, for cutting the UP resin into strips of
width 1 mm to 2 mm.
6.2 Gas chromatograph, including the following components:
6.2.1 Injection port, equipped with a splitter, for use with liquid samples.
6.2.2 Open, tubular column, e.g. meeting the specifications given in Annex A.
6.2.3 Flame ionization detector (FID).
A typical instrument setup and typical operating conditions are given in Annex A. Other setups and operating
conditions may be used provided that the chromatograms obtained comply with the requirements given in
8.6.1.
6.3 Data processor, e.g. a computer (or the equivalent), to record the signals from the detector.
6.4 Sample injection syringe, i.e. a 1 ο€ Β΅l microsyringe, either as a separate item of apparatus or
incorporated in the auto-injector of the gas chromatograph.
6.5 Analytical balance, accurate to 0,1 mg.
2 Β© ISO 2011 – All rights reserved

7 Preparation of sample
Polymerized UP resin pieces of any shape that will permit the production of strips of width 1 mm to 2 mm may
be used. Cut the polymerized pieces into strips of width 1 mm to 2 mm. Dry the strips and break them into
pieces of length approximately 10 mm. During cutting and drying, avoid any operation that could affect the
styrene and/or volatile-hydrocarbon content.
8 Procedure
8.1 General
Three test portions of the sample (see Clause 7) shall be analysed.
During the preparation, dilution and extraction processes described below, the temperature of all solutions
shall remain ο‚£25 Β°C.
8.2 Preparation of extraction solvent
Weigh, to the nearest 0,1 mg, (250 ο‚± 50) mg of n-butylbenzene (5.1) into a 1 000 ml volumetric flask
containing approximately 500 ml of dichloromethane (5.2). Make up to the mark with dichloromethane (see,
however, next paragraph) and mix.
Alternatively, acetone (see Note to 5.2) may be used instead of dichloromethane, provided that the results can
be demonstrated to
...


ΠœΠ•Π–Π”Π£ΠΠΠ ΠžΠ”ΠΠ«Π™ ISO
БВАНДАРВ 4901
Π’Ρ‚ΠΎΡ€ΠΎΠ΅ ΠΈΠ·Π΄Π°Π½ΠΈΠ΅
2011-08-15
ΠŸΠ»Π°ΡΡ‚ΠΈΠΊΠΈ Π°Ρ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Π΅ Π½Π° основС
нСнасыщСнных полиэфирных смол.
ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ содСрТания остаточного
ΠΌΠΎΠ½ΠΎΠΌΠ΅Ρ€Π° стирола, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π΄Ρ€ΡƒΠ³ΠΈΡ…
Π»Π΅Ρ‚ΡƒΡ‡ΠΈΡ… ароматичСских ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ²
с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ
Reinforced plastics based on unsaturated-polyester resins β€”
Determination of the residual styrene monomer content, as well as the
content of other volatile aromatic hydrocarbons, by gas chromatography

ΠžΡ‚Π²Π΅Ρ‚ΡΡ‚Π²Π΅Π½Π½ΠΎΡΡ‚ΡŒ Π·Π° ΠΏΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²ΠΊΡƒ русской вСрсии нСсёт GOST R
(Российская ЀСдСрация) Π² соотвСтствии со ΡΡ‚Π°Ρ‚ΡŒΡ‘ΠΉ 18.1 Устава ISO
Бсылочный Π½ΠΎΠΌΠ΅Ρ€
Β©
ISO 2011
Π”ΠžΠšΠ£ΠœΠ•ΠΠ’ Π—ΠΠ©Π˜Π©Π•Π ΠΠ’Π’ΠžΠ Π‘ΠšΠ˜Πœ ΠŸΠ ΠΠ’ΠžΠœ

Β© ISO 2011
ВсС ΠΏΡ€Π°Π²Π° ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‚ΡΡ. Если Π½Π΅ ΡƒΠΊΠ°Π·Π°Π½ΠΎ ΠΈΠ½ΠΎΠ΅, Π½ΠΈΠΊΠ°ΠΊΡƒΡŽ Ρ‡Π°ΡΡ‚ΡŒ настоящСй ΠΏΡƒΠ±Π»ΠΈΠΊΠ°Ρ†ΠΈΠΈ нСльзя ΠΊΠΎΠΏΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΈΠ»ΠΈ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π²
ΠΊΠ°ΠΊΠΎΠΉ-Π»ΠΈΠ±ΠΎ Ρ„ΠΎΡ€ΠΌΠ΅ ΠΈΠ»ΠΈ ΠΊΠ°ΠΊΠΈΠΌ-Π»ΠΈΠ±ΠΎ элСктронным ΠΈΠ»ΠΈ мСханичСским способом, Π²ΠΊΠ»ΡŽΡ‡Π°Ρ Ρ„ΠΎΡ‚ΠΎΠΊΠΎΠΏΠΈΠΈ ΠΈ ΠΌΠΈΠΊΡ€ΠΎΡ„ΠΈΠ»ΡŒΠΌΡ‹, Π±Π΅Π·
ΠΏΡ€Π΅Π΄Π²Π°Ρ€ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ письмСнного согласия ISO ΠΏΠΎ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π΅ΠΌΡƒ адрСсу, ΡƒΠΊΠ°Π·Π°Π½Π½ΠΎΠΌΡƒ Π½ΠΈΠΆΠ΅, ΠΈΠ»ΠΈ ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚Π°-Ρ‡Π»Π΅Π½Π° ISO Π² странС
заявитСля.
ISO copyright office
Case postale 56 β€’ CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
ΠžΠΏΡƒΠ±Π»ΠΈΠΊΠΎΠ²Π°Π½ΠΎ Π² Π¨Π²Π΅ΠΉΡ†Π°Ρ€ΠΈΠΈ
ii Β© ISO 2011 – ВсС ΠΏΡ€Π°Π²Π° ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‚ΡΡ

Π‘ΠΎΠ΄Π΅Ρ€ΠΆΠ°Π½ΠΈΠ΅ Π‘Ρ‚Ρ€Π°Π½ΠΈΡ†Π°
ΠŸΡ€Π΅Π΄ΠΈΡΠ»ΠΎΠ²ΠΈΠ΅ .iv
Π’Π²Π΅Π΄Π΅Π½ΠΈΠ΅ .v
1  ΠžΠ±Π»Π°ΡΡ‚ΡŒ примСнСния .1
2  НормативныС ссылки .1
3  Π’Π΅Ρ€ΠΌΠΈΠ½Ρ‹ ΠΈ опрСдСлСния .1
4  ΠŸΡ€ΠΈΠ½Ρ†ΠΈΠΏ.1
5  ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ .2
6  Аппаратура.2
7  ΠŸΡ€ΠΈΠ³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ ΠΎΠ±Ρ€Π°Π·Ρ†Π° .3
8  ΠœΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠ° .3
8.1  ΠžΠ±Ρ‰ΠΈΠ΅ полоТСния .3
8.2  ΠŸΡ€ΠΈΠ³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ экстракционного растворитСля .3
8.3  ΠŸΡ€ΠΈΠ³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ испытуСмого раствора .3
8.4  ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ содСрТания стСкловолокна ΠΈ ΠΌΠΈΠ½Π΅Ρ€Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ наполнитСля.3
8.5  ΠŸΡ€ΠΈΠ³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ ΠΊΠ°Π»ΠΈΠ±Ρ€ΠΎΠ²ΠΎΡ‡Π½Ρ‹Ρ… растворов .4
8.6  ΠœΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠ° Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ.4
9  Π’Ρ‹Ρ€Π°ΠΆΠ΅Π½ΠΈΠ΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² .6
9.1  РасчСт Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² ΠΏΠΎ ΠΊΠ°Π»ΠΈΠ±Ρ€ΠΎΠ²ΠΎΡ‡Π½ΠΎΠΌΡƒ Π³Ρ€Π°Ρ„ΠΈΠΊΡƒ.6
9.2  РасчСт содСрТания стирола (ΠΈΠ»ΠΈ Π΄Ρ€ΡƒΠ³ΠΎΠ³ΠΎ ароматичСского ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄Π°) Π²
исходном ΠΎΠ±Ρ€Π°Π·Ρ†Π΅ UP смолы.7
9.3  РасчСт содСрТания стирола (ΠΈΠ»ΠΈ Π΄Ρ€ΡƒΠ³ΠΎΠ³ΠΎ ароматичСского ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄Π°) Π² чистой
UP смолС.8
10  ΠŸΡ€ΠΎΡ‚ΠΎΠΊΠΎΠ» испытания.8
ΠŸΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ A (ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ‚ΠΈΠ²Π½ΠΎΠ΅) Π’ΠΈΠΏΠΈΡ‡Π½Ρ‹Π΅ Ρ€Π°Π±ΠΎΡ‡ΠΈΠ΅ условия.9

ΠŸΡ€Π΅Π΄ΠΈΡΠ»ΠΎΠ²ΠΈΠ΅
ΠœΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Π°Ρ организация ΠΏΠΎ стандартизации (ISO) являСтся всСмирной Ρ„Π΅Π΄Π΅Ρ€Π°Ρ†ΠΈΠ΅ΠΉ Π½Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Ρ‹Ρ…
ΠΎΡ€Π³Π°Π½ΠΈΠ·Π°Ρ†ΠΈΠΉ ΠΏΠΎ стандартизации (ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚ΠΎΠ²-Ρ‡Π»Π΅Π½ΠΎΠ² ISO). Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹Ρ… стандартов
ΠΎΠ±Ρ‹Ρ‡Π½ΠΎ осущСствляСтся тСхничСскими ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚Π°ΠΌΠΈ ISO. ΠšΠ°ΠΆΠ΄Ρ‹ΠΉ ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚-Ρ‡Π»Π΅Π½ ISO, заинтСрСсованный
Π² Π΄Π΅ΡΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ, для ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ Π±Ρ‹Π» создан тСхничСский ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚, ΠΈΠΌΠ΅Π΅Ρ‚ ΠΏΡ€Π°Π²ΠΎ Π±Ρ‹Ρ‚ΡŒ прСдставлСнным Π²
этом ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚Π΅. ΠœΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹Π΅ ΠΎΡ€Π³Π°Π½ΠΈΠ·Π°Ρ†ΠΈΠΈ, ΠΏΡ€Π°Π²ΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²Π΅Π½Π½Ρ‹Π΅ ΠΈ Π½Π΅ΠΏΡ€Π°Π²ΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²Π΅Π½Π½Ρ‹Π΅, ΠΈΠΌΠ΅ΡŽΡ‰ΠΈΠ΅
связи с ISO, Ρ‚Π°ΠΊΠΆΠ΅ ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°ΡŽΡ‚ участиС Π² Ρ€Π°Π±ΠΎΡ‚Π°Ρ…. ISO нСпосрСдствСнно сотрудничаСт с
ΠœΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½ΠΎΠΉ элСктротСхничСской комиссиСй (IEC) ΠΏΠΎ всСм вопросам элСктротСхничСской
стандартизации.
ΠœΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹Π΅ стандарты Ρ€Π°Π·Ρ€Π°Π±Π°Ρ‚Ρ‹Π²Π°ΡŽΡ‚ΡΡ Π² соотвСтствии с ΠΏΡ€Π°Π²ΠΈΠ»Π°ΠΌΠΈ, ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ‹ΠΌΠΈ Π²
Π”ΠΈΡ€Π΅ΠΊΡ‚ΠΈΠ²Π°Ρ… ISO/IEC, Π§Π°ΡΡ‚ΡŒ 2.
Основная Π·Π°Π΄Π°Ρ‡Π° тСхничСских ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚ΠΎΠ² состоит Π² ΠΏΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²ΠΊΠ΅ ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹Ρ… стандартов. ΠŸΡ€ΠΎΠ΅ΠΊΡ‚Ρ‹
ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹Ρ… стандартов, ΠΎΠ΄ΠΎΠ±Ρ€Π΅Π½Π½Ρ‹Π΅ тСхничСскими ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚Π°ΠΌΠΈ, Ρ€Π°ΡΡΡ‹Π»Π°ΡŽΡ‚ΡΡ ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚Π°ΠΌ-Ρ‡Π»Π΅Π½Π°ΠΌ
Π½Π° голосованиС. Π˜Ρ… ΠΎΠΏΡƒΠ±Π»ΠΈΠΊΠΎΠ²Π°Π½ΠΈΠ΅ Π² качСствС ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹Ρ… стандартов Ρ‚Ρ€Π΅Π±ΡƒΠ΅Ρ‚ одобрСния, ΠΏΠΎ
мСньшСй ΠΌΠ΅Ρ€Π΅, 75 % ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚ΠΎΠ²-Ρ‡Π»Π΅Π½ΠΎΠ², ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°ΡŽΡ‰ΠΈΡ… участиС Π² голосовании.
Π‘Π»Π΅Π΄ΡƒΠ΅Ρ‚ ΠΈΠΌΠ΅Ρ‚ΡŒ Π² Π²ΠΈΠ΄Ρƒ, Ρ‡Ρ‚ΠΎ Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ элСмСнты настоящСго Π΄ΠΎΠΊΡƒΠΌΠ΅Π½Ρ‚Π° ΠΌΠΎΠ³ΡƒΡ‚ Π±Ρ‹Ρ‚ΡŒ ΠΎΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠΌ ΠΏΠ°Ρ‚Π΅Π½Ρ‚Π½Ρ‹Ρ…
ΠΏΡ€Π°Π². ISO Π½Π΅ Π΄ΠΎΠ»ΠΆΠ΅Π½ нСсти ΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²Π΅Π½Π½ΠΎΡΡ‚ΡŒ Π·Π° ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΡŽ ΠΊΠ°ΠΊΠΎΠ³ΠΎ-Π»ΠΈΠ±ΠΎ ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΈΠ»ΠΈ всСх ΠΏΠ°Ρ‚Π΅Π½Ρ‚Π½Ρ‹Ρ…
ΠΏΡ€Π°Π².
ISO 4901 Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½ ВСхничСским ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚ΠΎΠΌ ISO/TC 61, ΠŸΠ»Π°ΡΡ‚ΠΌΠ°ΡΡΡ‹, ΠŸΠΎΠ΄ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚ΠΎΠΌ SC 12,
Π’Π΅Ρ€ΠΌΠΎΡ€Π΅Π°ΠΊΡ‚ΠΈΠ²Π½Ρ‹Π΅ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹.
НастоящСС Π²Ρ‚ΠΎΡ€ΠΎΠ΅ ΠΈΠ·Π΄Π°Π½ΠΈΠ΅ отмСняСт ΠΈ замСняСт ΠΏΠ΅Ρ€Π²ΠΎΠ΅ ΠΈΠ·Π΄Π°Π½ΠΈΠ΅ (ISO 4901:1985), ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ΅ ΠΏΠΎΠ΄Π²Π΅Ρ€Π³Π»ΠΎΡΡŒ
тСхничСскому пСрСсмотру (ΠΎΡ‚Π½ΠΎΡΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ подробностСй см. Π’Π²Π΅Π΄Π΅Π½ΠΈΠ΅).
iv Β© ISO 2011 – ВсС ΠΏΡ€Π°Π²Π° ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‚ΡΡ

Π’Π²Π΅Π΄Π΅Π½ΠΈΠ΅
Π—Π° 25 Π»Π΅Ρ‚ с ΠΌΠΎΠΌΠ΅Π½Ρ‚Π° ΠΏΡƒΠ±Π»ΠΈΠΊΠ°Ρ†ΠΈΠΈ ΠΏΠ΅Ρ€Π²ΠΎΠ³ΠΎ издания ISO 4901:1985, Π±Ρ‹Π» достигнут Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ
прогрСсс Π² аналитичСских ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠ°Ρ…, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ. ΠŸΠΎΡΡ‚ΠΎΠΌΡƒ Π΄Π°Π½Π½Ρ‹ΠΉ стандарт
Π±Ρ‹Π» ΠΏΠΎΠ΄Π²Π΅Ρ€Π³Π½ΡƒΡ‚ ΠΏΠΎΠ»Π½ΠΎΠΌΡƒ пСрСсмотру. Π‘Ρ‹Π»ΠΈ сдСланы ΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠ΅ основныС измСнСния:
a) ΠšΡ€ΠΎΠΌΠ΅ ΠΌΠ΅Ρ‚ΠΎΠ΄Π° Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ ΠΏΠ΅Ρ€Π²ΠΎΠ΅ ΠΈΠ·Π΄Π°Π½ΠΈΠ΅ ISO 4901 Π²ΠΊΠ»ΡŽΡ‡Π°Π»ΠΎ, Π² качСствС
Π°Π»ΡŒΡ‚Π΅Ρ€Π½Π°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ, классичСский ΠΌΠ΅Ρ‚ΠΎΠ΄ Π’ΠΈΡ…Π° Π½Π° основС йодомСтричСского титрования. Π­Ρ‚ΠΎΡ‚ ΠΌΠ΅Ρ‚ΠΎΠ΄
Π±Ρ‹Π» Π²ΠΊΠ»ΡŽΡ‡Π΅Π½ Π² ΠΏΠ΅Ρ€Π²ΠΎΠ΅ ΠΈΠ·Π΄Π°Π½ΠΈΠ΅ для Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€ΠΈΠΉ, Π² ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Π½Π΅Ρ‚ возмоТности ΠΎΡΡƒΡ‰Π΅ΡΡ‚Π²Π»ΡΡ‚ΡŒ
Π³Π°Π·ΠΎΠ²ΡƒΡŽ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΡŽ. ΠŸΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ Π² настоящСС врСмя хроматография являСтся
распространСнным аналитичСским ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ, ΠΌΠ΅Ρ‚ΠΎΠ΄ Π’ΠΈΡ…Π° Π±Ρ‹Π» ΠΈΡΠΊΠ»ΡŽΡ‡Π΅Π½ ΠΈΠ· стандарта.
b) Как ΠΏΡ€Π°Π²ΠΈΠ»ΠΎ, Π½Π°ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹Π΅ газохроматографичСскиС ΠΊΠΎΠ»ΠΎΠ½ΠΊΠΈ замСнялись Π½Π° капиллярныС ΠΊΠΎΠ»ΠΎΠ½ΠΊΠΈ,
ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΡΠΊΡΠΏΠ»ΡƒΠ°Ρ‚ΠΈΡ€ΡƒΡŽΡ‚ΡΡ ΠΏΡ€ΠΈ ΡΠΎΠ²Π΅Ρ€ΡˆΠ΅Π½Π½ΠΎ Π΄Ρ€ΡƒΠ³ΠΈΡ… условиях. ΠŸΠΎΡΡ‚ΠΎΠΌΡƒ Π² пСрСсмотрСнном ΠΌΠ΅Ρ‚ΠΎΠ΄Π΅
испытания ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‚ΡΡ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ капиллярныС ΠΊΠΎΠ»ΠΎΠ½ΠΊΠΈ.
c) ΠšΡ€ΠΎΠΌΠ΅ Ρ‚ΠΎΠ³ΠΎ, ΠΎΠ±Π»Π°ΡΡ‚ΡŒ примСнСния газохроматографичСского ΠΌΠ΅Ρ‚ΠΎΠ΄Π° Π±Ρ‹Π»Π° Ρ€Π°ΡΡˆΠΈΡ€Π΅Π½Π° Π·Π° счСт
опрСдСлСния Π½Π΅ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ стирола, Π½ΠΎ Ρ‚Π°ΠΊΠΆΠ΅ ΠΈ Π΄Ρ€ΡƒΠ³ΠΈΡ… ароматичСских ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ², ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΠΎΠ³ΡƒΡ‚
ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒΡΡ ΠΊΠ°ΠΊ растворитСли ΠΈΠ»ΠΈ исходныС ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ Π² производствС нСнасыщСнных
полиэфирных смол.
ΠœΠ•Π–Π”Π£ΠΠΠ ΠžΠ”ΠΠ«Π™ БВАНДАРВ ISO 4901:2011(R)

ΠŸΠ»Π°ΡΡ‚ΠΈΠΊΠΈ Π°Ρ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Π΅ Π½Π° основС нСнасыщСнных
полиэфирных смол. ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ содСрТания остаточного
ΠΌΠΎΠ½ΠΎΠΌΠ΅Ρ€Π° стирола, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π΄Ρ€ΡƒΠ³ΠΈΡ… Π»Π΅Ρ‚ΡƒΡ‡ΠΈΡ… ароматичСских
ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ² с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ
ΠŸΠ Π•Π”ΠžΠ‘Π’Π•Π Π•Π–Π•ΠΠ˜Π• β€” Π›ΠΈΡ†Π°, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‰ΠΈΠ΅ настоящий Π΄ΠΎΠΊΡƒΠΌΠ΅Π½Ρ‚, Π΄ΠΎΠ»ΠΆΠ½Ρ‹ Π·Π½Π°Ρ‚ΡŒ ΠΎΠ±Ρ‹Ρ‡Π½ΡƒΡŽ
Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€Π½ΡƒΡŽ ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΡƒ. Π’ этом стандартС Π½Π΅ ставится Ρ†Π΅Π»ΡŒ Ρ€Π΅ΡˆΠΈΡ‚ΡŒ всС ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡ‹
бСзопасности, связанныС с Π΅Π³ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ. ΠŸΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒ этого стандарта сам нСсСт
ΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²Π΅Π½Π½ΠΎΡΡ‚ΡŒ Π·Π° принятиС ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… ΠΌΠ΅Ρ€ ΠΏΠΎ бСзопасности ΠΈ ΠΎΡ…Ρ€Π°Π½Π΅ Π·Π΄ΠΎΡ€ΠΎΠ²ΡŒΡ, Π°
Ρ‚Π°ΠΊΠΆΠ΅ Π·Π° обСспСчСниС соотвСтствия трСбованиям Π»ΡŽΠ±Ρ‹Ρ… Ρ€Π΅Π³Π»Π°ΠΌΠ΅Π½Ρ‚ΠΎΠ².
1 ΠžΠ±Π»Π°ΡΡ‚ΡŒ примСнСния
Настоящий ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹ΠΉ стандарт устанавливаСт ΠΌΠ΅Ρ‚ΠΎΠ΄ опрСдСлСния содСрТания остаточного
ΠΌΠΎΠ½ΠΎΠΌΠ΅Ρ€Π° стирола Π² Π°Ρ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… пластиках Π½Π° основС ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€ΠΈΠ·ΠΎΠ²Π°Π½Π½Ρ‹Ρ… нСнасыщСнных
полиэфирных смол (UP) с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ. Π‘ΠΎΠ΄Π΅Ρ€ΠΆΠ°Π½ΠΈΠ΅ остаточного ΠΌΠΎΠ½ΠΎΠΌΠ΅Ρ€Π°
стирола являСтся Π²Π°ΠΆΠ½Ρ‹ΠΌ ΠΊΡ€ΠΈΡ‚Π΅Ρ€ΠΈΠ΅ΠΌ для ΠΎΡ†Π΅Π½ΠΊΠΈ стСпСни отвСрТдСния ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€ΠΈΠ·ΠΎΠ²Π°Π½Π½Ρ‹Ρ… UP смол.
Π”Π°Π½Π½Ρ‹ΠΉ ΠΌΠ΅Ρ‚ΠΎΠ΄ Ρ‚Π°ΠΊΠΆΠ΅ примСняСтся для ΠΎΠ΄Π½ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ опрСдСлСния содСрТания Π΄Ρ€ΡƒΠ³ΠΈΡ… Π»Π΅Ρ‚ΡƒΡ‡ΠΈΡ…
ароматичСских ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ² Π² UP смолах.
ΠœΠ΅Ρ‚ΠΎΠ΄ Π½Π΅ ΠΏΡ€ΠΈΠΌΠ΅Π½ΠΈΠΌ ΠΊ UP смолам с высокой химичСской ΡΡ‚ΠΎΠΉΠΊΠΎΡΡ‚ΡŒΡŽ.
2 НормативныС ссылки
Π‘Π»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠ΅ ссылочныС Π½ΠΎΡ€ΠΌΠ°Ρ‚ΠΈΠ²Π½Ρ‹Π΅ Π΄ΠΎΠΊΡƒΠΌΠ΅Π½Ρ‚Ρ‹ ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΎΠ±ΡΠ·Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹ΠΌΠΈ ΠΏΡ€ΠΈ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠΈ Π΄Π°Π½Π½ΠΎΠ³ΠΎ
Π΄ΠΎΠΊΡƒΠΌΠ΅Π½Ρ‚Π°. Для ТСстких ссылок примСняСтся Ρ‚ΠΎΠ»ΡŒΠΊΠΎ Ρ†ΠΈΡ‚ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ΅ ΠΈΠ·Π΄Π°Π½ΠΈΠ΅ Π΄ΠΎΠΊΡƒΠΌΠ΅Π½Ρ‚Π°. Для ΠΏΠ»Π°Π²Π°ΡŽΡ‰ΠΈΡ…
ссылок Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ самоС послСднСС ΠΈΠ·Π΄Π°Π½ΠΈΠ΅ Π½ΠΎΡ€ΠΌΠ°Ρ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ ссылочного Π΄ΠΎΠΊΡƒΠΌΠ΅Π½Ρ‚Π°
(Π²ΠΊΠ»ΡŽΡ‡Π°Ρ Π»ΡŽΠ±Ρ‹Π΅ измСнСния).
ISO 472, ΠŸΠ»Π°ΡΡ‚ΠΌΠ°ΡΡΡ‹. Π‘Π»ΠΎΠ²Π°Ρ€ΡŒ
ISO 1172, БтСклопластики. ΠŸΡ€Π΅ΠΏΡ€Π΅Π³ΠΈ, Ρ„ΠΎΡ€ΠΌΠΎΠ²ΠΎΡ‡Π½Ρ‹Π΅ массы ΠΈ слоистыС ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹. ΠžΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅
содСрТания стСкловолокна ΠΈ ΠΌΠΈΠ½Π΅Ρ€Π°Π»ΡŒΠ½Ρ‹Ρ… Π½Π°ΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»Π΅ΠΉ. ΠœΠ΅Ρ‚ΠΎΠ΄Ρ‹ сТигания
3 Π’Π΅Ρ€ΠΌΠΈΠ½Ρ‹ ΠΈ опрСдСлСния
ΠŸΡ€ΠΈΠΌΠ΅Π½ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ ΠΊ Π΄Π°Π½Π½ΠΎΠΌΡƒ Π΄ΠΎΠΊΡƒΠΌΠ΅Π½Ρ‚Ρƒ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‚ΡΡ Ρ‚Π΅Ρ€ΠΌΠΈΠ½Ρ‹ ΠΈ опрСдСлСния, ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ‹Π΅ Π² ISO 472.
4 ΠŸΡ€ΠΈΠ½Ρ†ΠΈΠΏ
Π‘Ρ‚ΠΈΡ€ΠΎΠ» ΡΠΊΡΡ‚Ρ€Π°Π³ΠΈΡ€ΡƒΡŽΡ‚ ΠΈΠ· ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€ΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠΉ UP смолы ΠΏΡ€ΠΈ ΠΏΠΎΠΌΠΎΡ‰ΠΈ Π΄ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½Π°. Π‘ΠΎΠ΄Π΅Ρ€ΠΆΠ°Π½ΠΈΠ΅
стирола Π² экстрактС ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΡΡŽΡ‚ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡ Π²Π½ΡƒΡ‚Ρ€Π΅Π½Π½ΠΈΠΉ стандарт ΠΈ
ΠΊΠ°Π»ΠΈΠ±Ρ€ΠΎΠ²ΠΎΡ‡Π½Ρ‹ΠΉ Π³Ρ€Π°Ρ„ΠΈΠΊ.
5 ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹
5.1 Π½-Π‘ΡƒΡ‚ΠΈΠ»Π±Π΅Π½Π·ΠΎΠ», аналитичСского качСства, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΡ‹ΠΉ Π² качСствС Π²Π½ΡƒΡ‚Ρ€Π΅Π½Π½Π΅Π³ΠΎ стандарта.
5.2 Π”ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½, аналитичСского качСства, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΡ‹ΠΉ Π² качСствС экстракционного
растворитСля.
ΠŸΠ Π•Π”ΠžΠ‘Π’Π•Π Π•Π–Π•ΠΠ˜Π• β€” Π”ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½ Π²Ρ€Π΅Π΄Π΅Π½ для Π·Π΄ΠΎΡ€ΠΎΠ²ΡŒΡ ΠΏΡ€ΠΈ Π³Π»ΠΎΡ‚Π°Π½ΠΈΠΈ, Π²Π΄Ρ‹Ρ…Π°Π½ΠΈΠΈ ΠΈΠ»ΠΈ
Π²ΠΏΠΈΡ‚Ρ‹Π²Π°Π½ΠΈΠΈ Ρ‡Π΅Ρ€Π΅Π· ΠΊΠΎΠΆΡƒ. Он ΠΏΠΎΡ€Π°ΠΆΠ°Π΅Ρ‚ Ρ†Π΅Π½Ρ‚Ρ€Π°Π»ΡŒΠ½ΡƒΡŽ Π½Π΅Ρ€Π²Π½ΡƒΡŽ систСму, ΠΏΠ΅Ρ‡Π΅Π½ΡŒ, сСрдСчно-
ΡΠΎΡΡƒΠ΄ΠΈΡΡ‚ΡƒΡŽ систСму ΠΈ ΠΊΡ€ΠΎΠ²ΡŒ. Он Π²Ρ‹Π·Ρ‹Π²Π°Π΅Ρ‚ Ρ€Π°Π·Π΄Ρ€Π°ΠΆΠ΅Π½ΠΈΠ΅ ΠΊΠΎΠΆΠΈ, Π³Π»Π°Π· ΠΈ Π΄Ρ‹Ρ…Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… ΠΏΡƒΡ‚Π΅ΠΉ.
ΠŸΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°ΡŽΡ‚ Ρ‚Π°ΠΊΠΆΠ΅, Ρ‡Ρ‚ΠΎ ΠΎΠ½ ΠΈΠΌΠ΅Π΅Ρ‚ ΠΊΠ°Π½Ρ†Π΅Ρ€ΠΎΠ³Π΅Π½Π½ΠΎΠ΅ воздСйствиС, ΠΏΡ€ΠΈΡ‡Π΅ΠΌ риск развития Ρ€Π°ΠΊΠ°
зависит ΠΎΡ‚ уровня ΠΈ ΠΏΡ€ΠΎΠ΄ΠΎΠ»ΠΆΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ Π΅Π³ΠΎ воздСйствия.
ΠŸΠ Π˜ΠœΠ•Π§ΠΠΠ˜Π• Π’Π²ΠΈΠ΄Ρƒ токсичности ΠΈ ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅ΠΌΡ‹Ρ… ΠΊΠ°Π½Ρ†Π΅Ρ€ΠΎΠ³Π΅Π½Π½Ρ‹Ρ… свойств Π΄ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½Π° Π² качСствС Π΅Π³ΠΎ
Π·Π°ΠΌΠ΅Π½ΠΈΡ‚Π΅Π»Π΅ΠΉ ΠΈΡΡΠ»Π΅Π΄ΡƒΡŽΡ‚ Π°Ρ†Π΅Ρ‚ΠΎΠ½ ΠΈ этилацСтат. Если Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ этого исслСдования ΠΎΠΊΠΎΠ½Ρ‡Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎ подтвСрдят
ΠΏΡ€ΠΈΠ³ΠΎΠ΄Π½ΠΎΡΡ‚ΡŒ Π»ΠΈΠ±ΠΎ ΠΎΠ΄Π½ΠΎΠ³ΠΎ, Π»ΠΈΠ±ΠΎ ΠΎΠ±ΠΎΠΈΡ… этих растворитСлСй, Ρ‚ΠΎ Π΄Π°Π½Π½Ρ‹ΠΉ ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹ΠΉ стандарт Π±ΡƒΠ΄Π΅Ρ‚
ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ пСрСсмотрСн.
5.3 Π‘Ρ‚ΠΈΡ€ΠΎΠ», аналитичСского качСства, ΠΈ, ΠΏΡ€ΠΈ нСобходимости, Π΄Ρ€ΡƒΠ³ΠΈΠ΅ ароматичСскиС
ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄Ρ‹, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, Ρ‚ΠΎΠ»ΡƒΠΎΠ», этилбСнзол ΠΈ Ξ±-мСтилстирол, Ρ‚Π°ΠΊΠΆΠ΅ аналитичСского качСства.
ΠŸΠ Π˜ΠœΠ•Π§ΠΠΠ˜Π• Π‘Ρ‡ΠΈΡ‚Π°ΡŽΡ‚, Ρ‡Ρ‚ΠΎ ароматичСский ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ΠΈΡ‚ для Π΄Π°Π½Π½ΠΎΠ³ΠΎ опрСдСлСния Π² Ρ‚ΠΎΠΌ случаС,
Ссли ΠΎΠ½ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ ΠΊΠ°ΠΊ Ρ€Π°ΡΡ‚Π²ΠΎΡ€ΠΈΡ‚Π΅Π»ΡŒ ΠΈΠ»ΠΈ исходный ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π» Π² процСссС производства UP смол.
5.4 Π“Π°Π·-Π½ΠΎΡΠΈΡ‚Π΅Π»ΡŒ ΠΈ Ρ‚ΠΎΠΏΠ»ΠΈΠ²Π½Ρ‹Π΅ Π³Π°Π·Ρ‹ для ΠΏΠ»Π°ΠΌΠ΅Π½Π½ΠΎ-ΠΈΠΎΠ½ΠΈΠ·Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ Π΄Π΅Ρ‚Π΅ΠΊΡ‚ΠΎΡ€Π° (FID):
⎯ Π³Π°Π·-Π½ΠΎΡΠΈΡ‚Π΅Π»ΡŒ: Π³Π΅Π»ΠΈΠΉ ΠΈΠ»ΠΈ Π°Π·ΠΎΡ‚;
⎯ FID Ρ‚ΠΎΠΏΠ»ΠΈΠ²Π½Ρ‹Π΅ Π³Π°Π·Ρ‹: Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ ΠΈ Π²ΠΎΠ·Π΄ΡƒΡ….
6 Аппаратура
Π˜ΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ обычная лабораторная Π°ΠΏΠΏΠ°Ρ€Π°Ρ‚ΡƒΡ€Π° ΠΈ трСбуСтся ΡΠ»Π΅Π΄ΡƒΡŽΡ‰Π΅Π΅ ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½ΠΈΠ΅:
6.1 Π Π΅ΠΆΡƒΡ‰Π΅Π΅ устройство, ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½Π½ΠΎΠ΅ ΠΎΡ…Π»Π°ΠΆΠ΄Π°Π΅ΠΌΡ‹ΠΌ Π²ΠΎΠ΄ΠΎΠΉ Π°Π»ΠΌΠ°Π·Π½Ρ‹ΠΌ Π»Π΅Π·Π²ΠΈΠ΅ΠΌ, для нарСзания
ΠΈΠ· UP смол полосок ΡˆΠΈΡ€ΠΈΠ½ΠΎΠΉ 1 ΠΌΠΌ – 2 ΠΌΠΌ.
6.2 Π“Π°Π·ΠΎΠ²Ρ‹ΠΉ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„, ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½Π½Ρ‹ΠΉ ΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠΌΠΈ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚Π°ΠΌΠΈ:
6.2.1 ΠžΡ‚Π²Π΅Ρ€ΡΡ‚ΠΈΠ΅ для Π²Π²ΠΎΠ΄Π° ΠΏΡ€ΠΎΠ±Ρ‹, снабТСнноС Π΄Π΅Π»ΠΈΡ‚Π΅Π»Π΅ΠΌ, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌΠΎΠ΅ для ΠΆΠΈΠ΄ΠΊΠΈΡ… ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ².
6.2.2 ΠšΠ°ΠΏΠΈΠ»Π»ΡΡ€Π½Π°Ρ ΠΊΠΎΠ»ΠΎΠ½ΠΊΠ°, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π°Ρ трСбованиям, ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ‹ΠΌ Π²
ΠŸΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΈ A.
6.2.3 ПламСнно-ΠΈΠΎΠ½ΠΈΠ·Π°Ρ†ΠΈΠΎΠ½Π½Ρ‹ΠΉ Π΄Π΅Ρ‚Π΅ΠΊΡ‚ΠΎΡ€ (FID).
Випичная настройка ΠΏΡ€ΠΈΠ±ΠΎΡ€Π° ΠΈ Ρ‚ΠΈΠΏΠΈΡ‡Π½Ρ‹Π΅ Ρ€Π°Π±ΠΎΡ‡ΠΈΠ΅ условия приводятся Π² ΠŸΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΈ A. ΠœΠΎΠ³ΡƒΡ‚
ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒΡΡ Π΄Ρ€ΡƒΠ³ΠΈΠ΅ настройки ΠΈ Ρ€Π°Π±ΠΎΡ‡ΠΈΠ΅ условия ΠΏΡ€ΠΈ условии, Ρ‡Ρ‚ΠΎ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°ΠΌΠΌΡ‹
ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‚ трСбованиям, ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ‹ΠΌ Π² 8.6.1.
6.3 ΠŸΡ€ΠΎΡ†Π΅ΡΡΠΎΡ€ для ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Π΄Π°Π½Π½Ρ‹Ρ…, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€ (ΠΈΠ»ΠΈ эквивалСнтноС устройство) для
записи сигналов ΠΎΡ‚ Π΄Π΅Ρ‚Π΅ΠΊΡ‚ΠΎΡ€Π°.
6.4 Π¨ΠΏΡ€ΠΈΡ† для Π²Π²ΠΎΠ΄Π° ΠΏΡ€ΠΎΠ±, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, ΠΌΠΈΠΊΡ€ΠΎΡˆΠΏΡ€ΠΈΡ† Π²ΠΌΠ΅ΡΡ‚ΠΈΠΌΠΎΡΡ‚ΡŒΡŽ 1 ΠΌΠΊΠ», Π»ΠΈΠ±ΠΎ ΠΊΠ°ΠΊ ΠΎΡ‚Π΄Π΅Π»ΡŒΠ½Ρ‹ΠΉ
ΠΏΡ€Π΅Π΄ΠΌΠ΅Ρ‚, Π»ΠΈΠ±ΠΎ встроСнный Π² Π°Π²Ρ‚ΠΎΠ΄ΠΎΠ·Π°Ρ‚ΠΎΡ€ Π³Π°Π·ΠΎΠ²ΠΎΠ³ΠΎ Ρ…Ρ€ΠΎΠΌΠ°Ρ‚ΠΎΠ³Ρ€Π°Ρ„Π°.
6.5 АналитичСскиС вСсы, с Ρ‚ΠΎΡ‡Π½ΠΎΡΡ‚ΡŒΡŽ Π΄ΠΎ 0,1 ΠΌΠ³.
2 Β© ISO 2011 – ВсС ΠΏΡ€Π°Π²Π° ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‚ΡΡ

7 ΠŸΡ€ΠΈΠ³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ ΠΎΠ±Ρ€Π°Π·Ρ†Π°
ΠœΠΎΠ³ΡƒΡ‚ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒΡΡ куски ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€ΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠΉ UP смолы любой Ρ„ΠΎΡ€ΠΌΡ‹, ΠΈΠ· ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… ΠΌΠΎΠΆΠ½ΠΎ Π½Π°Ρ€Π΅Π·Π°Ρ‚ΡŒ
полоски ΡˆΠΈΡ€ΠΈΠ½ΠΎΠΉ 1 ΠΌΠΌ – 2 ΠΌΠΌ. Из ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€ΠΈΠ·ΠΎΠ²Π°Π½Π½Ρ‹Ρ… кусков Π½Π°Ρ€Π΅Π·Π°ΡŽΡ‚ полоски ΡˆΠΈΡ€ΠΈΠ½ΠΎΠΉ 1 ΠΌΠΌ – 2 ΠΌΠΌ.
Π‘ΡƒΡˆΠ°Ρ‚ полоски ΠΈ ΠΈΠ·ΠΌΠ΅Π»ΡŒΡ‡Π°ΡŽΡ‚ ΠΈΡ… Π½Π° кусочки Π΄Π»ΠΈΠ½ΠΎΠΉ ΠΏΡ€ΠΈΠ±Π»ΠΈΠ·ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ 10 ΠΌΠΌ. Π’ΠΎ врСмя Ρ€Π΅Π·ΠΊΠΈ ΠΈ ΡΡƒΡˆΠΊΠΈ
ΠΈΠ·Π±Π΅Π³Π°ΡŽΡ‚ любой ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ, которая ΠΌΠΎΠΆΠ΅Ρ‚ ΠΎΠΊΠ°Π·Π°Ρ‚ΡŒ воздСйствиС Π½Π° содСрТаниС стирола ΠΈ/ΠΈΠ»ΠΈ Π΄Ρ€ΡƒΠ³ΠΈΡ…
Π»Π΅Ρ‚ΡƒΡ‡ΠΈΡ… ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄ΠΎΠ².
8 ΠœΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠ°
8.1 ΠžΠ±Ρ‰ΠΈΠ΅ полоТСния
НСобходимо ΠΏΡ€ΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΏΠΎ Ρ‚Ρ€ΠΈ ΠΏΡ€ΠΎΠ±Ρ‹ для Π°Π½Π°Π»ΠΈΠ·Π° ΠΎΡ‚ ΠΎΠ±Ρ€Π°Π·Ρ†Π° (см.Π Π°Π·Π΄Π΅Π» 7).
Π’ΠΎ врСмя процСссов приготовлСния, разбавлСния ΠΈ экстрагирования, описанных Π½ΠΈΠΆΠ΅, Ρ‚Π΅ΠΌΠΏΠ΅Ρ€Π°Ρ‚ΡƒΡ€Π°
всСх растворов Π΄ΠΎΠ»ΠΆΠ½Π° ΠΎΡΡ‚Π°Π²Π°Ρ‚ΡŒΡΡ ≀25 Β°C.
8.2 ΠŸΡ€ΠΈΠ³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ экстракционного растворитСля
Π’Π·Π²Π΅ΡˆΠΈΠ²Π°ΡŽΡ‚ (250 Β± 50) ΠΌΠ³ Π½-Π±ΡƒΡ‚ΠΈΠ»Π±Π΅Π½Π·ΠΎΠ»Π° (5.1) с Ρ‚ΠΎΡ‡Π½ΠΎΡΡ‚ΡŒΡŽ Π΄ΠΎ 0,1 ΠΌΠ³ Π² ΠΌΠ΅Ρ€Π½ΡƒΡŽ ΠΊΠΎΠ»Π±Ρƒ Π²ΠΌΠ΅ΡΡ‚ΠΈΠΌΠΎΡΡ‚ΡŒΡŽ
1 000 ΠΌΠ», ΡΠΎΠ΄Π΅Ρ€ΠΆΠ°Ρ‰ΡƒΡŽ ΠΏΡ€ΠΈΠ±Π»ΠΈΠ·ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ 500 ΠΌΠ» Π΄ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½Π° (5.2). Доводят Π΄ΠΎ ΠΌΠ΅Ρ‚ΠΊΠΈ Π΄ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½ΠΎΠΌ
(см. ΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠΉ ΠΏΠ°Ρ€Π°Π³Ρ€Π°Ρ„) ΠΈ ΠΏΠ΅Ρ€Π΅ΠΌΠ΅ΡˆΠΈΠ²Π°ΡŽΡ‚.
ΠΠ»ΡŒΡ‚Π΅Ρ€Π½Π°Ρ‚ΠΈΠ²Π½ΠΎ, ΠΌΠΎΠΆΠ½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ Π°Ρ†Π΅Ρ‚ΠΎΠ½ (см. ΠŸΡ€ΠΈΠΌΠ΅Ρ‡Π°Π½ΠΈΠ΅ ΠΊ 5.2) вмСсто Π΄ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½Π° ΠΏΡ€ΠΈ условии,
Ρ‡Ρ‚ΠΎ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Π±ΡƒΠ΄ΡƒΡ‚ эквивалСнтны Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°ΠΌ, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹ΠΌ с Π΄ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½ΠΎΠΌ. Π’ случаС
разногласий Π΄ΠΎΠ»ΠΆΠ΅Π½ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒΡΡ Π΄ΠΈΡ…Π»ΠΎΡ€ΠΌΠ΅Ρ‚Π°Π½.
8.3 ΠŸΡ€ΠΈΠ³ΠΎΡ‚ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ испытуСмого раствора
Π’Π·Π²Π΅ΡˆΠΈΠ²Π°ΡŽΡ‚ с Ρ‚ΠΎΡ‡Π½ΠΎΡΡ‚ΡŒΡŽ Π΄ΠΎ 0,1 ΠΌΠ³ Π² коничСской ΠΊΠΎΠ»Π±Π΅
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