火焰原子吸收光谱法测定固体废弃物磷石膏中微量铜和铅

Determination of Copper and Lead in Solid Phosphogypsum Waster with Flame Atomic Absorption Spectrophotometry(FAAS)

利用浓硝酸和浓盐酸消解磷石膏固体样品，选择了这两种酸的最佳用最，建立一种磷石膏样品处理方法。研究了应用火焰原子吸收光谱法直接吸取含盐量高的样品溶液，测定其中CU和pb的可行性。一份样品进行7次测定，结果表明，CU和Pb的RSD分别为2．6％和2．0％，加标回收率分别为92.88％一105．04％和91．20％－103．60％。

This paper used nitric acid and chlorhydric acid to treat solid phosphogrosum saxnple,and built amethod for treating phosphogrosum after optimizing used volum of nitric acid and chlorhydric acid. Inaddition,this paper studied the feasibility of detection of Cu and Pb in phosphogrosum with FAAS bydirectly absorbing sample solution which contained high concentration of salt. The results of one sam-ple in seven tines detection showed that the relative standard dehations of Cu and Pb were 2. 6 % and2. 0% respectively,and that the recoveries were between 92. 88% and 105. O4 % for Cu and between9l. 20% and 103. 60% for Pb.