固体废物浸出液中铅、镉的流动注射-原子吸收光谱法测定

Determination of Lead and Cadmium in Solid Waste Leaching Liquors by Flow Injection/Atomic Absorption Spectrometry

利用NP—多胺基磷酸树脂为填料制作浓缩柱,结合流动注射技术,对铜渣、尾矿渣及电镀污泥浸出液中的微量铅和镉进行富集,用火焰原子吸收法测定。对于铅和镉,其精密度实验的相对标准偏差分别为2.7％～11.4％和1.5％～4.0%;回收率分别为93.7％～103.0％和88.4％～92.8％。

Trace lead and cadmium in leaching liquors of copper slag, tailing and electroplating sludge were pre-concentrated with concentration column preqared by NP-401 type chelating resin and determined by FAAS with sample introducing by injection technique. For lead and cadmium, the relative standard deviation were 2.7-11.4% and 1.5-4.0%, the recoveries were 93.7-103% and 88.4-92.8% respectively.