BS EN 482:2021

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Workplace exposure. Procedures for the determination of the concentration of chemical agents. Basic performance requirements

Published By	Publication Date	Number of Pages
BSI	2021	26

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Categories: 13.040.30 - Workplace atmospheres, BSI

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Description

This document specifies basic performance requirements for procedures for the determination of the concentration of chemical agents in workplace atmospheres as required by the Chemical Agents Directive 98/24/EC [13]. These requirements apply to all steps of measuring procedures regardless of the physical form of the chemical agent (gas, vapour, airborne particles), measuring procedures with separate sampling and analytical methods, and direct-reading instruments.

This document specifies requirements that are fulfilled by measuring procedures when tested under prescribed laboratory conditions due to a wide range of environmental conditions encountered in practice.

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PDF Pages	PDF Title
2	undefined
7	1 Scope 2 Normative references
8	3 Terms and definitions 4 Classification
9	5 Performance requirements
13	6 Test method and calculation of uncertainty of measurement
14	7 Validation report
15	Annex A (informative)Structure of a method description
16	Annex B (informative)Calculation of uncertainty of measurement B.1 General
17	B.2 Uncertainty associated with sampled air volume or mass uptake B.2.1 Pumped sampling B.2.1.1 Sources of uncertainty B.2.1.2 Flow rate measurement
18	B.2.1.3 Pump flow stability B.2.1.4 Sampling time
19	B.2.2 Diffusive sampling B.2.2.1 Sources of uncertainty B.2.2.2 Uptake rate B.2.2.3 Sampling time B.3 Uncertainty associated with sampling efficiency B.3.1 Pumped sampling methods for gases and vapours B.3.2 Diffusive sampling methods for gases and vapours
20	B.3.3 Aerosol sampling methods B.3.3.1 General B.3.3.2 Closeness of matching with the required sampling convention(s) B.3.3.3 Uncertainty components for aerosol samplers – Estimates for general use B.3.3.4 Efficiency of the collection substrate
21	B.4 Uncertainty associated with sample storage and transportation B.4.1 Sample storage B.4.2 Transportation B.4.2.1 Gas samples and vapour samples B.4.2.2 Aerosol samples B.5 Uncertainty associated with method recovery for gases and vapours B.6 Uncertainty associated with analytical recovery for airborne particles and mixtures of airborne particles and vapour
22	B.7 Uncertainty associated with method variability for gases and vapours B.8 Uncertainty associated with analytical variability for airborne particles and mixtures of airborne particles and vapour B.9 Blank substraction
23	B.10 Formulas to calculate the combined uncertainty components

Additional information

Status	Definitive
Pages	26
Publication Date	2021-03-24
ISBN	978 0 539 06639 5
Standard Number	BS EN 482:2021
Title	Workplace exposure. Procedures for the determination of the concentration of chemical agents. Basic performance requirements
Identical National Standard Of	EN 482
Replaces	BS EN 482:2012+A1:2015
Descriptors	Performance, Classification systems, Precision, Sampling methods, Air pollution, Determination of content, Air, Measurement characteristics, Occupational safety, Chemical analysis and testing, Environment (working)
Publisher	BSI
Committee	EH/2/2
ICS Codes	13.040.30 - Workplace atmospheres

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BS EN 482:2021

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