GB/T 4372.2-1984
氧化锌(直接法)化学分析方法 磷酸底液极谱法测定氧化铅与氧化镉量
Methods for chemical analysis of zinc oxide(direct process)--The phosphoric acid supporting electrolyte polarographic methods for the determination of lead oxide and cadmium oxide contents
GBT4372.2-1984, GB4372.2-1984