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eLibrary > BS ISO 21438-2:2024 Workplace atmospheres. Determination of inorganic acids by ion chromatography - Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid) >

BS ISO 21438-2:2024 Workplace atmospheres. Determination of inorganic acids by ion chromatography - Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid), 2024

BS ISO 21438-2:2024 Workplace atmospheres. Determination of inorganic acids by ion chromatography - Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid), 2024

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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Requirement
6 Reagents
7 Apparatus [Go to Page]
7.1 Sampling equipment
7.2 Laboratory apparatus
8 Occupational exposure assessment
9 Sampling [Go to Page]
9.1 Preliminary considerations [Go to Page]
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
9.1.4 Sample handling
9.2 Preparation for sampling [Go to Page]
9.2.1 Cleaning of samplers
9.2.2 Loading the aerosol samplers with filters
9.2.3 Setting the volumetric flow rate
9.2.4 Field blanks
9.3 Sampling position [Go to Page]
9.3.1 Personal sampling
9.3.2 Static sampling
9.4 Collection of samples
9.5 Transportation [Go to Page]
9.5.1 Samplers that collect airborne particles and/or gases on the filter
9.5.2 Samplers with an internal filter cassette
9.5.3 Samplers of the disposable-cassette type
9.5.4 Transport of samples to the laboratory
9.5.5 Equilibration period
10 Analysis [Go to Page]
10.1 Preparation of test and calibration solutions, and filter samples [Go to Page]
10.1.1 General
10.1.2 Preparation of filter solutions
10.1.3 Preparation of calibration solutions
10.2 Instrumental analysis
10.3 Estimation of limits of detection and quantification [Go to Page]
10.3.1 Estimation of the instrumental limit of detection
10.3.2 Estimation of the method limit of detection and limit of quantification
10.4 Quality control [Go to Page]
10.4.1 Reagent blanks and laboratory blanks
10.4.2 Quality control solutions
10.4.3 Certified reference materials
10.4.4 Proficiency testing
10.5 Measurement uncertainty
11 Expression of results
12 Method performance [Go to Page]
12.1 Sampling efficiency and sample storage
12.2 Limits of quantification
12.3 Upper limits of the working range
12.4 Bias and precision [Go to Page]
12.4.1 Analytical bias
12.4.2 Analytical precision
12.5 Uncertainty of sampling and analysis method
12.6 Interferences
13 Test report [Go to Page]
13.1 Test record
13.2 Laboratory report
Annex A (normative) Temperature and pressure correction
Annex B (informative) Filter materials
Bibliography [Go to Page]

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BS ISO 21438-2:2024 Workplace atmospheres. Determination of inorganic acids by ion chromatography - Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid), 2024

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