GB 6730.45-1986 Methods for chemical analysis of iron ores--The diethyldithiocar bamic acid, Ag salt photometric method for the determination of arsenic content (English Version)
2006GB/T 6730.45-2006 Iron ores Determination of arsenic content Arseno-molybdenum blue spectrophotometric method after hydrogen arsenide separation
1986GB 6730.45-1986 Methods for chemical analysis of iron ores--The diethyldithiocar bamic acid, Ag salt photometric method for the determination of arsenic content