GJB 950.2-1990 Analysis method of trace elements of precious metals and their alloys ICP-AES method Determination of trace amounts of iron, lead, antimony and bismuth in silver and silver alloys (English Version)
2008GJB 950.1A-2008 Analysis methods for minor elements of precious metals and their alloys. Part 1: Determination of minor lead, antimony, bismuth, and iron in gold and gold alloys, silve and silve alloys, palladium alloys by inductively coupled plasma atomic emission spect
1990GJB 950.2-1990 Analysis method of trace elements of precious metals and their alloys ICP-AES method Determination of trace amounts of iron, lead, antimony and bismuth in silver and silver alloys