UDC549.325.2中华人民共和国国家标准GB/T14352.7-93钨矿石、钼矿石化学分析方法丁二肟-磺基水杨酸-氢氧化铵氯化铵底液极谱法测定钴量Methods for chemical analysis of tungsten ores and molybdenumores-Determination of cobalt content-Polarographicmethod in dimethylglyoxime-sulfosalicylicacid-ammonium hydroxide-ammonium chloride system1993-05-12发布1994-02-01实施国家技术监督局发布
