草酸铵试法鉴定Ca^(2+)用NaNTU掩蔽Ag^+和Hg^(2+)  

Eliminating the interference of Ag^+、Hg^(2+) with the NaNTU in the identification of Ca^(2+) using (NH_4)_2C_2O_4

作　　者：马万山[1] 钟黎[1] 李国玉[1] 孙玉川[1] 

机构地区：[1]信阳师范学院化学化工学院,河南信阳464000

出　　处：《信阳师范学院学报（自然科学版）》2003年第2期172-173,共2页Journal of Xinyang Normal University(Natural Science Edition)

摘　　要：在实验的基础上,提出了用草酸铵试法鉴定钙时,用N-烯丙基-N′-(对苯磺酸钠)硫脲掩蔽Ag+和Hg2+离子干扰,与传统的H2S沉淀消除的干扰的方法相比,具有操作简便、条件易控制、无污染等优点.A method was described for the eliminating the ammonium oxalate interference of Ag+ and Hg2+ with the NallylN′(sodium pphenylsulfonate) thiourea(NaNTU) in the identification of Ca2+ using (NH4)2C2O4. Compared to the traditional methods, this method is easy,simple and good effects.

关 键 词：草酸铵试法 CA^2+ 离子鉴定 NaNTU N—烯丙基—N’—(对苯磺酸钠)硫脲 AG^+ HG^2+ 离子掩蔽 

分 类 号：O614.231[理学—无机化学] O654[理学—化学]