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BS ISO 23637:2021

BS ISO 23637:2021

$102.76

Cereals. Determination of cadmium content by graphite furnace atomic absorption spectrometry with diluted nitric acid extraction

Published By Publication Date Number of Pages
BSI 2021 18
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PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and solution
5.4 Palladium nitrate hydrate (Pd(NO3)2, 99,9 % purity).
8 5.6 Cadmium standard solution.
6 Apparatus and equipment
7 Procedure
7.1 General
7.2 Sampling
9 7.3 Preparation of the test samples
7.4 Extraction
7.4.1 General
7.4.2 Reagent blank
7.5 Sample analysis
7.5.1 General
7.5.2 Operating conditions
7.5.3 Calibration graph
10 7.5.4 Determination
7.5.5 Application of matrix-modifier
7.6 Analytical quality control
8 Calculation
9 Precision
9.1 General
9.2 Repeatability
11 9.3 Reproducibility
9.4 Critical difference, D
9.4.1 General
9.4.2 Comparison of two groups of measurements in one laboratory
12 9.4.3 Comparison of two groups of measurements in two laboratories
10 Test report
13 Annex A (informative) Results of interlaboratory tests
16 Bibliography

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BS ISO 23637:2021
$102.76