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BS ISO 22863-8:2021

BS ISO 22863-8:2021

$102.76

Fireworks. Test methods for determination of specific chemical substances – Arsenic content by hydride generation atomic fluorescence spectrometry

Published By Publication Date Number of Pages
BSI 2021 18
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This document specifies the test method for the determination of the arsenic content in pyrotechnic compositions by hydride generation -atomic fluorescence spectrometry

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
4 Principle of the method
5 Reagents
5.1 Perchloric acid (GR)
5.2 Nitric acid (GR)
5.3 Thiourea (AR)
5.4 Ascorbic acid (AR)
10 5.5 Potassium borohydride (AR)
5.6 Sodium hydroxide (AR)
5.7 Nitric acid solution (volume fraction 5 %):
5.8 Thiourea (5 % by mass) – ascorbic acid (5 % by mass) mixed solution:
5.9 Sodium hydroxide solution (mass fraction 0,2 %):
5.10 Potassium borohydride solution (mass fraction 2 %):
5.11 Arsenic standard solution (1 000 mg/l)
5.12 Arsenic standard solution (1 µg/ml):
5.13 Preparation of Arsenic standard “work curve” solutions:
6 Apparatus
6.1 Agate mortar
6.2 80 mesh standard sample sieve
6.3 Heating plate
6.5 Teflon capped beaker
6.6 Volumetric flasks (100 and 50 ml)
11 7 Test procedure
7.1 Sample pre-treatment, digestion and preparation of the solution to be tested
7.2 Test conditions
7.3 Calculations
12 8 Accuracy
9 Other
10 Test report
13 Annex A (normative) Standard addition method

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BS ISO 22863-8:2021
$102.76