摘要
本文研究并提出了硅钼蓝杂多酸在pH为9．6的NH3－NH4Cl缓冲溶液中于-0．44V（vs．SCE）处产生一灵敏的导数极谱波，线性范围在0．005μg／ml～1．0μg／ml，检出限为0．005μg／ml。变异系数为1．45％，回收率为94．1％～104％。本法具有简单、快速、灵敏、较好选择性等特点，可直接用于钢铁中硅的测定或水样的测定。
A method for the detcrmination of silicon in a supporting solution of pH 9.6 NH3 - NH4Cl by oscillopolarography of silicomolybdic heteropoly acid has been established. The peak potential is -0. 44V(vs. SCE). The peak height is lineraly proportional to the concentration of silicon over the rang of 0. 005 ~ 1. 0μg/ml. The detectionlimit is 0 .005μg/ml. This method is simple, sensitive, rapid and betterselective. The results are satisfactory when it is used to analyse silicon iniron & steel or water.silicon,
出处
《四川有色金属》
2000年第2期57-61,共5页
Sichuan Nonferrous Metals
关键词
硅
硅钼蓝
杂多酸
示波极谱
钢铁
测定
silicon silicomolybdic, heteropoly acid, osillopolarography, iron & steel
