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BS ISO 21438-1:2022

BS ISO 21438-1:2022

$142.49

Workplace atmospheres. Determination of inorganic acids by ion chromatography – Part 1: Non-volatile acids (sulfuric acid and phosphoric acid)

Published By Publication Date Number of Pages
BSI 2022 30
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PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
10 3 Terms and definitions
11 4 Principle
5 Requirement
6 Reagents
6.4 Sodium carbonate/sodium hydrogen carbonate extraction and eluent stock solution.
12 6.5 Sodium carbonate/sodium hydrogen carbonate extraction and eluent solution.
6.6 Sulfate and phosphate stock solutions.
6.7 Sulfate and phosphate calibration solutions.
6.8 Sulfate and phosphate check-standard.
6.9 Sulfate and phosphate check-standard working solution.
7 Apparatus
7.1 Sampling equipment
13 7.1.5 Ancillary equipment:
14 7.2 Laboratory apparatus
7.2.4 Plastic labware:
15 8 Occupational exposure assessment
9 Sampling
9.1 Preliminary considerations
9.1.1 Selection and use of samplers
9.1.2 Sampling period
9.1.3 Effect of temperature and pressure on flow rate measurements
16 9.1.4 Sample handling
9.1.5 Sampling interferences
9.2 Preparation for sampling
9.2.1 Cleaning of samplers
17 9.2.2 Loading the samplers with filters
9.2.3 Setting the volumetric flow rate
9.2.4 Field blanks
9.3 Sampling position
9.3.1 Personal sampling
9.3.2 Static sampling
9.4 Collection of samples
18 9.5 Transportation
9.5.1 Samplers that collect airborne particles on the filter
9.5.2 Samplers with an internal filter cassette
9.5.3 Samplers of the disposable cassette type
19 9.5.4 Transport of samples to the laboratory
10 Analysis
10.1 Preparation of test, calibration solutions and filter samples
10.1.1 General
10.1.2 Quartz fibre filters
10.1.3 PVC and PTFE filters
20 10.1.4 Preparation of calibration solutions
10.2 Instrumental analysis
21 10.3 Estimation of detection and quantification limits
10.3.1 Estimation of the instrumental detection limits
10.3.2 Estimation of the method detection limit and quantification limit
10.4 Quality control
10.4.1 Reagent blanks and laboratory blanks
10.4.2 Quality control solutions
22 10.4.3 Certified reference materials
10.4.4 External quality assessment
10.5 Measurement uncertainty
11 Expression of results
23 12 Method performance
12.1 Sample collection and stability
12.2 Quantification limits
12.3 Upper limits of the analytical range
12.4 Bias and precision
12.4.1 Analytical bias
12.4.2 Analytical precision
24 12.5 Uncertainty of sampling and analysis method
12.6 Interferences
13 Test report
13.1 Test record
25 13.2 Laboratory report
26 Annex A (informative) Temperature and pressure correction
28 Bibliography

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BS ISO 21438-1:2022
$142.49