SIST ISO 7934:1996/AMD1:2000
(Amendment)Stationary source emissions - Determination of the mass concentration of sulfur dioxide - Hydrogen peroxide/barium perchlorate/Thorin method - Amendment 1
Stationary source emissions - Determination of the mass concentration of sulfur dioxide - Hydrogen peroxide/barium perchlorate/Thorin method - Amendment 1
Émissions de sources fixes — Détermination de la concentration en masse de dioxyde de soufre — Méthode au peroxyde d'hydrogène/perchlorate de baryum/Thorin — Amendement 1
Emisije nepremičnih virov - Določevanje masne koncentracije žveplovega dioksida - Metoda z vodikovim peroksidom/barijevim perkloratom/Thorinom) - Dopolnilo 1
General Information
- Status
- Published
- Publication Date
- 31-Dec-1999
- Technical Committee
- KAZ - Air quality
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jan-2000
- Due Date
- 01-Jan-2000
- Completion Date
- 01-Jan-2000
Relations
- Effective Date
- 01-Jan-2000
- Effective Date
- 18-Apr-2008
Overview
ISO 7934:1989/Amd 1:1998 is an amendment to the international standard for measuring the mass concentration of sulfur dioxide (SO2) in stationary source emissions using the hydrogen peroxide / barium perchlorate / Thorin chemical method. The amendment (1998) updates parts of the original 1989 procedure to improve accuracy and practical performance based on intermethod comparisons and field experience.
Key Topics and Requirements
- Method scope: Chemical absorption and colorimetric determination of SO2 from stationary (stack) emissions using the hydrogen peroxide / barium perchlorate / Thorin reaction.
- Correction to pH adjustment: Replacement of sodium hydroxide with potassium hydroxide (KOH) for adjusting the pH of the absorption solution. The amendment specifies a standard volumetric KOH solution c(KOH) = 0.1 mol/L.
- pH target: The combined sample solution is adjusted to pH 3.5 using the standard volumetric KOH solution or standard volumetric perchloric acid as required.
- Sample handling: After pH adjustment, the combined treated sample is made up to the mark in an appropriate one-mark volumetric flask and mixed. A note clarifies that larger flask volumes may be needed for high-moisture waste gases.
- Particle filter design: The amendment replaces the original figure for the particle filter; the updated filter example specifies packing quartz wool (about 0.5–0.8 g) and a perforated plate or sintered filter to retain particulates.
- Rationale: Comparative testing with ISO 11632 and ISO 7935 showed 5–10% lower results with the original method; using KOH removed this bias, improving agreement between methods.
Applications and Users
This amendment is relevant for organizations and professionals involved in emission monitoring and air quality measurement, including:
- Environmental testing laboratories performing SO2 stack emission analyses
- Industrial compliance teams and environmental managers in power plants, refineries and combustion sources
- Regulatory bodies and inspectors requiring standardized methods for stationary source emissions
- Consultants and laboratories conducting method validation, inter-laboratory comparisons and quality assurance
Practical uses include routine compliance testing, method calibration and cross-checks against instrumental methods (e.g., UV-based analysers), and establishing consistent, reproducible SO2 mass concentration data.
Related Standards
- ISO 11632 (comparative method referenced in the amendment)
- ISO 7935 (UV-instrumental method for SO2)
- General ICS field: 13.040.40 - Stationary source emissions
Keywords: ISO 7934, SO2 emissions, sulfur dioxide measurement, hydrogen peroxide barium perchlorate Thorin method, potassium hydroxide pH adjustment, stationary source emissions, emission monitoring, air quality standard.
Frequently Asked Questions
SIST ISO 7934:1996/AMD1:2000 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Stationary source emissions - Determination of the mass concentration of sulfur dioxide - Hydrogen peroxide/barium perchlorate/Thorin method - Amendment 1". This standard covers: Stationary source emissions - Determination of the mass concentration of sulfur dioxide - Hydrogen peroxide/barium perchlorate/Thorin method - Amendment 1
Stationary source emissions - Determination of the mass concentration of sulfur dioxide - Hydrogen peroxide/barium perchlorate/Thorin method - Amendment 1
SIST ISO 7934:1996/AMD1:2000 is classified under the following ICS (International Classification for Standards) categories: 13.040.40 - Stationary source emissions. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ISO 7934:1996/AMD1:2000 has the following relationships with other standards: It is inter standard links to SIST ISO 7934:1996; is excused to ISO 7934:1989. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST ISO 7934:1996/AMD1:2000 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 7934
First edition
1989-08-01
AMENDMENT 1
1998-07-01
Stationary source emissions —
Determination of the mass concentration of
sulfur dioxide — Hydrogen peroxide/barium
perchlorate/Thorin method
AMENDMENT 1
Émissions de sources fixes — Détermination de la concentration en masse
de dioxyde de soufre — Méthode au peroxyde d'hydrogène/perchlorate de
baryum/Thorin
AMENDEMENT 1
A
Reference number
ISO 7934:1989/Amd.1:1998(E)
ISO 7934:1989/Amd.1:1998(E)
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.
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.
Amendment 1 to International Standard ISO 7934:1989 was prepared by
Technical Committee ISO/TC 146, Air quality, Subcommittee SC 1,
Stationary source emissions.
© ISO 1998
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 the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
ii
©
ISO ISO 7934:1989/Amd.1:1998(E)
Introduction
Comparative measurements of the mass concentration of sulfur dioxide
(both in laboratory and under field conditions) using ISO 7934, the method
described i
...
NORME ISO
INTERNATIONALE 7934
Première édition
1989-08-01
AMENDEMENT 1
1998-07-01
Émissions de sources fixes —
Détermination de la concentration en
masse de dioxyde de soufre — Méthode au
peroxyde d'hydrogène/perchlorate de
baryum/Thorin
AMENDEMENT 1
Stationary source emissions — Determination of the mass concentration of
sulfur dioxide — Hydrogen peroxide/barium perchlorate/Thorin method
AMENDMENT 1
A
Numéro de référence
ISO 7934:1989/Amd.1:1998(F)
ISO 7934:1989/Amd.1:1998(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération
mondiale d'organismes nationaux de normalisation (comités membres de
l'ISO). L'élaboration des Normes internationales est en général confiée aux
comités techniques de l'ISO. Chaque comité membre intéressé par une
étude a le droit de faire partie du comité technique créé à cet effet. Les
organisations internationales, gouvernementales et non gouvernementales,
en liaison avec l'ISO participent également aux travaux. L'ISO collabore
étroitement avec la Commission électrotechnique internationale (CEI) en
ce qui concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptés par les comités techniques
sont soumis aux comités membres pour vote. Leur publication comme
Normes internationales requiert l'approbation de 75 % au moins des
comités membres votants.
L'Amendement 1 à la Norme internationale ISO 7934:1989 a été élaboré
par le comité technique ISO/TC 146, Qualité de l'air, sous-comité SC 1,
Émissions de sources fixes.
© ISO 1998
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publi-
cation ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun pro-
cédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord
écrit de l'éditeur.
Organisation internationale de normalisation
Case postale 56 • CH-1211 Genève 20 • Suisse
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Imprimé en Suisse
ii
©
ISO ISO 7934:1989/Amd.1:1998(F)
Introduction
Des mesurages comparatifs de la concentration en masse de dioxyde de
soufre (à la fois dans des conditions de laboratoire et des conditions
réelles) effectués en utilisant, respectivement, la méthode de l’ISO 7934, la
méthode de l’ISO 11632 et l
...
SLOVENSKI STANDARD
01-januar-2000
(PLVLMHQHSUHPLþQLKYLURY'RORþHYDQMHPDVQHNRQFHQWUDFLMHåYHSORYHJDGLRNVLGD
0HWRGD]YRGLNRYLPSHURNVLGRPEDULMHYLPSHUNORUDWRP7KRULQRP 'RSROQLOR
Stationary source emissions - Determination of the mass concentration of sulfur dioxide -
Hydrogen peroxide/barium perchlorate/Thorin method - Amendment 1
Ta slovenski standard je istoveten z: ISO 7934:1989/Amd 1:1998
ICS:
13.040.40 (PLVLMHQHSUHPLþQLKYLURY Stationary source emissions
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 7934
First edition
1989-08-01
AMENDMENT 1
1998-07-01
Stationary source emissions —
Determination of the mass concentration of
sulfur dioxide — Hydrogen peroxide/barium
perchlorate/Thorin method
AMENDMENT 1
Émissions de sources fixes — Détermination de la concentration en masse
de dioxyde de soufre — Méthode au peroxyde d'hydrogène/perchlorate de
baryum/Thorin
AMENDEMENT 1
A
Reference number
ISO 7934:1989/Amd.1:1998(E)
ISO 7934:1989/Amd.1:1998(E)
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.
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.
Amendment 1 to International Standard ISO 7934:1989 was prepared by
Technical Committee ISO/TC 146, Air quality, Subcommittee SC 1,
Stationary source emissions.
© ISO 1998
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 the
...
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