石墨炉原子吸收法测定输配水设备中镉含量  

作　　者：孙克强[1] 曹晓燕[1] 周嘉恩[1] 利永杰[1] 

机构地区：[1]佛山出入境检验检疫局综合技术中心,广东佛山528000

出　　处：《科技传播》2012年第16期108-109,共2页Public Communication of Science & Technology

摘　　要：本实验以PdCl2+NH4H2PO4+MgNO3为基体改进剂,研究了石墨炉原子吸收法测定输配水阀门中浸出镉含量的方法,避免了在测试输配水阀门中镉含量时,由于浸泡液基体背景对测试结果的干扰。重点讨论了基体改进剂用量,以及灰化温度、原子化温度对测定结果的影响。在最佳测量条件下,镉的浓度在0.0ug/L～4.0ug/L的范围内呈现良好线性,相对标准偏差为1.1%～1.8%,检出限为0.1ug/L,回收率为95%～102%。In this experiment,PdCl2 + NH4H2PO4 + MgNO3matrix modifier,graphite furnace atomic absorption method for the determination of the leaching of cadmium content in the water distribution valve to avoid when the cadmium content in the test water distribution valves,due to the the soaking matrix background interfere with the test results.Focused on the substrate to improve the dosage,and the ashing temperature and atomization temperature on the determination results.The best measurement conditions,Cadmium concentrations in the range of 0.0 ug/L～4.0ug/L showed a good linear,the relative standard deviation was 1.1 %～1.8%the detection limit of the cadmium was 0.1μg/L,recovery was 95%～102%.

关 键 词：石墨炉原子吸收法 输配水设备 基体改进剂 镉含量 

分 类 号：R185[医药卫生—流行病学] O657.31[医药卫生—公共卫生与预防医学]