GB/T 14506.25-1993
硅酸盐岩石化学分析方法 硫酸-苯羟乙酸-辛可宁-氯酸钾底液极谱法连续测定钼量和钨量
Silicate rocks. Determination of molybdenum and tungsten content. Sulfuric acid-phenylhydroxyacetic acid-cinchonine-potassium chlorate medium polarographic method
GBT14506.25-1993, GB14506.25-1993