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