摘要
本文提出了在ＨＣｌ－Ｈ＿３ＰＯ＿４－ＫＣｌ底液中示波极谱同时测定金属锌中铅、镉含量的方法，检测下限铅为０．１ｍｇ／Ｌ，镉为０．０１ｍｇ／Ｌ铅、锡波形清晰，重视性好。试样中加标准回收，铅回收率为９９．２％～１００％，镉回收率为９５％～９８％，与标准方法比较，相对误差＜５％。方法准确、简便、快速，适用于金属锌中铅、镉的常规分析。
new method based on oscillopo-larography has been studied for the simultane-ous determination of Pb and Cd in supportingelectrolytes of HCl, H_3PO_4 and KCl. The de-tection limits are 0.1mg/L and 0.01mg/L forPb and Cd respectively. The adsorptive wavesare weel-defined and good in reproducibility.The recoveries are 99%～100% for Pb and95%～98% for Cd. The relative errors areless than 5%. Possible ions in samples, whenless than 20 times that of Pb or Cd do not in-terfere. The determination results indicatethat the analysis of Pb and Cd in zinc metal bysimple-sweep oscillopolarography is a simple,accurate and time-saving method. It can beused in the routine analysis of zinc metal.
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第3期84-86,共3页
Chinese Journal of Analysis Laboratory
关键词
锌
铅
镉
极谱法
Zinc
lead and cadmium deter-mination
oscillopolarography
