摘要
在氨性介质中 ,超痕量铬 (Ⅵ )能催化过氧化氢氧化偶氮胂I褪色。通过研究该反应的最佳条件和动力学参数 ,建立了测定超痕量铬 (Ⅵ )的新方法。该方法检测限为 7.2 7× 10 - 11g铬 (Ⅵ ) /mL ,测定范围为 0～ 0 .10 μg铬 (Ⅵ ) / 2 5mL ,用于测定环境中铬 (Ⅵ ) ,获得满意结果。
It has been observed that Cr(Ⅵ) can sensitively catalyze the reaction of H 2O 2 oxidating discoloration of the Arsenazo Ⅰ in NH 3·H 2O medium.The kinetics mechanism of the reaction was investigated in detail and a new method for the determination of trace Cr(Ⅵ) was proposed.The detection limit is 7.27×10 -11 g/mL and the linear range is 0-0.10μg/25mL of Cr(Ⅵ) .It has been applied satisfactorily to the determination of trace Cr(Ⅵ) in some water.
出处
《南昌大学学报（理科版）》
CAS
北大核心
2001年第4期365-370,共6页
Journal of Nanchang University(Natural Science)
基金
抚州师专科研经费资助课题
