摘要
在酸性介质中,微量铬(VI)能显著催化高碘酸钾氧化酸性铬蓝K褪色。研究了该指示反应的动力学行为,建立了测定痕量铬的新催化动力学分析方法,方法的线性测定范围为1.0~10.0μg/25ml,检出限为(4.14×10-8)g/ml。本法可用于电镀废水中Cr(VI)的测定,结果满意。
A new kinetic method for the determination of trace chromium (VI) was established based on the catalytic action of Cr (VI) on the oxidative fading reaction between acid chrome blue K and KIO4 in acid medium. The calibration graph is linear for 1.0-10.0ug/ml, and the detection limit is 4.14×10^-8g/ml. The method is proposed for the determination of trace chromium in the electroplatie waste water with a satisfactory result.
出处
《大理学院学报(综合版)》
CAS
2007年第4期41-42,共2页
Journal of Dali University
关键词
催化光度法
铬
酸性铬蓝K
高碘酸钾
Kinetic speetrophotometrie
ehromium
aeid chrome blue K
KIO4