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BS EN ISO 23861:2022

BS EN ISO 23861:2022

$142.49

Workplace air. Chemical agent present as a mixture of airborne particles and vapour. Requirements for evaluation of measuring procedures using samplers

Published By Publication Date Number of Pages
BSI 2022 32
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This document specifies requirements for the evaluation of measuring procedures using samplers for the determination of a chemical agent present in the workplace atmosphere as a mixture of airborne particles and vapour. The procedures given in this document provide results only for the sum of airborne particles and vapour. The concentration is calculated in terms of mass per unit volume. NOTE      The physical behaviour of a mixture of airborne particles and vapour is described in Annex A. Examples of substances which can be present in multiple phases are toluene diisocyanate, diethanolamine, ethyleneglycol and tributylphosphate. This document can also be applied to complex mixtures, such as metal working fluids or bitumen fumes. This document is applicable to samplers and measuring procedures using these samplers in which sampling and analysis are carried out in separate stages.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols and abbreviated terms
11 5 Sampler types
6 Requirements
6.1 General
6.2 Sampler requirements
6.2.1 General
6.2.2 Flow resistance and stability of the air flow
12 6.2.3 Connecting parts
6.2.4 Pumps
6.3 Measuring procedure requirements
6.3.1 Sampling procedure requirements
6.3.2 Analytical procedure requirements
14 6.3.3 Expanded uncertainty
6.3.4 Method description
7 General test conditions
7.1 Reagents
7.2 Apparatus
8 Test methods
8.1 Spiking method
8.1.1 General
8.1.2 Deposit of the analyte on the first collection substrate
15 8.1.3 Deposit of the analyte on the other collection substrates of a type A sampler
8.1.4 Transfer of the analyte
16 8.2 Evaluation of measuring procedures
8.2.1 General
8.2.2 Storage after sampling
17 8.3 Uncertainty of the measurement
8.3.1 Calculation of the combined standard uncertainty
8.3.2 Calculation of the expanded uncertainty
9 Test report
18 Annex A (informative) Physical behaviour of a mixture of airborne particles and vapour
22 Annex B (informative) Possible approaches to sample mixtures of airborne particles and vapour
25 Annex C (informative) Estimation of uncertainty of measurement
28 Bibliography

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BS EN ISO 23861:2022
$142.49