摘要
采用盐酸处理工业磷酸试样，用氢化物发生-原子荧光光谱法测定工业磷酸中的铅，对仪器条件、盐酸酸度、预还原剂用量、还原剂用量、共存元素干扰进行了试验，方法的检出限为0．028ug／L，测定精密度0．84％，回收率为98．9％-101．4％。建立的氢化物发生-原子荧光光谱法测定工业磷酸中的铅的分析方法具有操作简单，灵敏度高，重现性好等优点，能满足日常检验的要求。
The content of Lead in phosphoric acid for industry use was determined by hydride generation - atomic florescence spectrophotometry （ HG - AFS）. The samples were treated by hydrochloric acid. The instrument conditions and influence of the concentration of hydrochloric acid, potassium borohydride and coexisting elements were investigated. The detection limit of the method was 0.028ug/L with relative standard deviation of 0.84% and recovery of 98.9 - 101.4%. The method has high sensitivity,its precision and accuracy were both meet requirements, can be used in routine inspection of Lead in Phosphoric acid for industry use.
出处
《贵州化工》
2009年第2期42-44,53,共4页
Guizhou Chemical Industry
关键词
氢化物发生-原子荧光光谱法
工业磷酸
铅
Hydride generation -atomic florescence spectrophotometry
Phosphoric acid for industry use
Lead
