摘要
在ｐＨ５．３的ＨＣｌ－ＮａＡｃ缓冲溶液中，Ｉｎ（Ⅲ）与８－羟基喹哪啶共存时，于－０．７３Ｖ（ｖｓ．ＳＣＥ）外产生一灵敏的导数极谱波（Ｐ１）。Ｐ１波高与Ｉｎ（Ⅲ）浓度在０．００５～０．４４μｇ／ｍｌ范围内呈良好的线性关系，其回归方程为ｙ＝－０．０６７＋２５０．９ｘ，相关系数ｒ＝０．９９９４。检出限为０．００２μｇ／ｍｌ。试验表明，该极谱波属于络合物吸附波。本法已用于测定铅锌矿、电铁粉中微量铟，结果满意。
In the buffer solution hydrochloric acid -sodium acetate(pH5.3),a sensitive adsorptive complex wave (P1) of indium (Ⅲ)-8-hydroxyquinaldine is obtained by simple-sweep polarography. The peak height P1 was directly proportional to the concentration of In(Ⅲ)in the range of 0.005 to 0.44μg/ml.The detection limit of indium is 0.002μg/ml. It was used to determine trace indium in ores and iron powder. The mechanism of electrode reaction was studied in detail.
出处
《冶金分析》
CAS
CSCD
北大核心
1996年第2期5-8,共4页
Metallurgical Analysis
