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BS EN 10188:2024

$102.76

Steels and cast irons. Determination of chromium content. Flame atomic absorption spectrometric method (FAAS)

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BSI 2024 20
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This document specifies a flame atomic absorption spectrometric method (FAAS) for the determination of chromium content in steels and cast irons. The method is applicable to non-alloy and low-alloy steels and cast irons with chromium contents between 0,002 % (by mass) to 2,0 % (by mass). The method can be adapted to lower or higher chromium contents by changing the test portion or the dilution factor, provided the criteria in 6.3.2 and 6.3.3 are still met. The precision data of the present method are given in Annex A.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
7 5 Reagents
8 6 Apparatus
6.1 Ordinary laboratory equipment
6.2 Platinum crucibles, of capacity 30 ml
6.3 Atomic absorption spectrometer
6.3.1 General
6.3.2 Minimum precision
6.3.3 Additional performance requirements
6.3.3.1 General
6.3.3.2 Characteristic concentration
6.3.3.3 Limit of detection
6.3.3.4 Calibration linearity
9 6.4 Ancillary equipment
7 Sampling
8 Procedure
8.1 Test portion
8.2 Blank test
8.3 Determination
8.3.1 Preparation of the test solution
10 8.3.2 Preparation of the calibration solutions
8.3.2.1 General
8.3.2.2 Chromium contents up to 0,10 % (by mass)
8.3.2.3 Chromium contents between 0,10 (by mass) and 0,5 % (by mass)
11 8.3.2.4 Chromium contents between 0,50 (by mass) and 2,0 % (by mass)
12 8.3.3 Adjustment of atomic absorption spectrophotometer
8.3.4 Spectrometric measurements
13 8.3.4.1 Spectrometric measurements of the calibration solutions
8.3.4.2 Spectrometric measurements of the test solutions
14 9 Expression of results
9.1 Use of the calibration curve
9.2 Use of bracketing method
15 10 Test report
16 Annex A (informative)Precision data
BS EN 10188:2024
$102.76