摘要
目的：建立共沉淀测定尿中铅、镉、锰的火焰原子吸收法（FAAS）。方法：尿液经HNO3-H2O2消化处理,Mg（OH）2沉淀富集后,用FAAS测定铅镉锰含量。结果：标准曲线线性良好（r〉0.999）,样品测定中,铅镉锰的相对标准偏差分别为1.7%-6.5%、2.7%-4.1%、2.4%-6.0%,回收率分别为96.5%-102.0%、93.4%-98.2%和90.0%-98.6%。尿液中共存离子无干扰。结论：此方法可以用于尿中铅镉锰元素的测定,具有简便易行、灵敏度高的特点。
Objective：To establish a method for simultaneous determination of Pb,Cd and Mn in urine by flame atomic absorption spectrophotometry（FAAS）.Methods：After digestion of urine with HNO3-H2O2 and co-precipitation with Mg（OH）2,the target elements were determined by FAAS.Results： The linear correlation coefficients of the standard curves were greater than 0.999.The relative standard deviations for determination of samples were found in the ranges of 1.7%-6.5%,2.7%-4.1% and 2.4%-6.0% and the recoveries were in the ranges of 96.5%-102.0%,93.4%-98.2% and 90.0%-98.6% for lead,cadmium and manganese,respectively.No interferences were observed from coexistent substances in urine.Conclusion： This method can be used for lead,cadmium and manganese measurement in urine,which is simple and easy to operate with high sensitivity.
出处
《中国卫生检验杂志》
CAS
2010年第9期2154-2155,共2页
Chinese Journal of Health Laboratory Technology
关键词
共沉淀
尿
铅
镉
锰
Coprecipitation
Urine
Lead
Cadmium
Manganese
