This Part of GB/T 223 specifies the determination of nickel content with dimethylglyoxime direct photometric method and extraction seperation-dimethylglyoxime spectrophotometric method.
The method one of this Part is applicable to the determination of nickel content with mass fraction 0.030%~2.00% in pig iron, iron powder, carbon steel and alloy steel; the method two of this Part is applicable to the determination of nickel content with mass fraction 0.010%~0.50% in pig iron, carbon steel, alloy steel and precious alloy.
Foreword I
1 Scope
2 Normative References
3 Method One-Diacetyldioxime Directly Photometric Method
4 Method Two-Extraction Separation-Dimethylglyoxime Spectrophotometric Method
5 Test Report
Appendix A (Informative) Additional Information of Joint Precision Test