1 Scope
This Part of GB/T 223 specifies determination of lead content with carrier precipitation-xylenol orange spectrophotometric method.
This Part is applicable to determination of a lead content between 0.0005 % (mass fraction) and 0.25% (mass fraction) in carbon steel, alloy steel, high temperature alloy and precision alloy.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this Part of GB/T 223. For dated reference, subsequent amendments to (excluding correction to),or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition
Foreword I
1 Scope
2 Normative References
3 Principle
4 Reagent
5 Apparatus
6 Sampling and Sample Preparation
7 Operation Procedures
8 Result Calculation
9 Permissible Deviation
10 Test Report
