SIST ISO 23506:2025

SLOVENSKI STANDARD
01-december-2025
Zrak na delovnem mestu - Analiza hlapov in kapljic mineralnih olj, ki se v zraku ne
mešajo z vodo, z infrardečo spektroskopijo s Fourierjevo transformacijo (FTIR)
Workplace air - Analysis of airborne water immiscible mineral oil droplets and vapor with
Fourier - Transform infrared spectroscopy
Air des lieux de travail - Analyse par transformée de Fourier des vapeurs et des
gouttelettes d'huile minérale non miscibles à l'eau en suspension dans l'air -
Spectroscopie infrarouge à transformée de Fourier
Ta slovenski standard je istoveten z: ISO 23506:2021
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 23506
First edition
2021-04
Workplace air — Analysis of airborne
water immiscible mineral oil droplets
and vapor with Fourier — Transform
infrared spectroscopy
Air des lieux de travail — Analyse par transformée de Fourier des
vapeurs et des gouttelettes d'huile minérale non miscibles à l'eau
en suspension dans l'air — Spectroscopie infrarouge à transformée
de Fourier
Reference number
©
ISO 2021
© ISO 2021
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ii © ISO 2021 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus and reagents . 2
5.1 Collecting materials for analysis and other chemicals . 2
5.2 Sampler equipment . 3
5.3 Analytical equipment . 3
5.4 Other equipment . 4
6 Polymer resin preparation . 5
6.1 Drying . 5
6.2 Sieving . 5
6.3 Purification of unused polymer resin . 5
6.3.1 General. 5
6.3.2 Step 1: Preparatory purification with ethanol . 5
6.3.3 Step 2: Purifying with tetrachloroethene . 5
7 Sampling . 6
7.1 Sampler preparation . 6
7.1.1 Glass fibre filter (droplets) . 6
7.1.2 Polymer resin (vapours) . 6
7.1.3 Marking . 6
7.1.4 Cleaning . 6
7.1.5 Assembly . 6
7.2 Sampling . 6
7.2.1 Parameters . 6
7.2.2 Pump . 7
7.2.3 Initial flow rate . 7
7.2.4 Flow rate verification . 7
7.2.5 Storage and transport . 7
8 Analysis . 7
8.1 FTIR scanning parameters . 7
8.2 Preparation . 7
8.2.1 Sample. 7
8.2.2 Solvent blank . 7
8.2.3 Collection substrate blank . 7
8.3 Calibration . 8
8.3.1 General. 8
8.3.2 Stock solution . 8
8.3.3 Calibration standards . 8
8.3.4 Calibration with liquid paraffin . 9
8.4 Measurement . 9
8.4.1 General. 9
8.4.2 Instrument background . 9
8.4.3 Filling the cuvette . 9
8.4.4 Calibration . 9
8.4.5 Sample measurement . 9
9 Evaluation .10
9.1 Calibration .10
9.2 Samples .10
10 Interferences .11
Annex A (informative) Validation .12
Annex B (informative) Example for estimation of expanded uncertainty.20
Bibliography .24
iv © ISO 2021 – All rights reserved

Foreword
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
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constitute an endorsemen
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