This standard is applicable to the determination of lead content in metallic chromium, with a determination range of 0.0003% to 0.0015%. This standard complies with GB 1467-78 "General Rules and General Provisions of Standards for Chemical Analysis Methods of Metallurgical Products".
GB/T 4702.13-1987 history
1987GB/T 4702.13-1987 Methods for chemical analysis of chromium metal--The oscilloplarographic method for the determination of lead content