摘要
在0．06mol·L^-1硫酸溶液中，Sb（Ⅲ）与焦性没食子酸络合物产生一个灵敏的导数极谱波，峰电位为-0．4V（vs．SCE），有微量Se（Ⅳ）存在下，灵敏度大为提高，锑浓度在0．03～1．2mg·L^-1范围内峰高与浓度呈线性关系，应用于锌电解液中痕量锑的测定。检出限为0．004mg·L^-1，RSD为1．8％～2．2％，回收率为95．0％～105．0％。
In a 0.06 mol · L^-1 H2SO4 medium, a complex was formed between Sb（ Ⅲ ） and pyrogallic acid, giving a sensitive derivative polarographic wave with its peak potential at -0. 4 V（vs. SCE）. The sensitivity of this polarographic reaction was remarakably increased in the presence of microamounts of selenium （Ⅳ）. Linear relationship between peak current and Sb concentration was ranged in 0. 03- 1.2 mg · L^-1. Detetion limit of the method was found to be 0. 004 mg · L^-1. The proposed method has been applied to the determination of trace antimony in zinc electrolyte giving RSD＇s in the range of 1.8%-2. 2% and recoveries in the range of 95. 0%- 105.0%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2006年第6期443-444,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
锑
锌电解液
极谱波
Antimony
Zinc electrolyte
Polarography
