锰(Ⅱ)-高碘酸钾-灿烂绿体系测定水中痕量锰

Determination of Trace Manganese(Ⅱ) in Water by Mn(Ⅱ)-KIO_4-Resplendency Green System

在 HAc- Na Ac环境中 ,锰 ( )对于高碘酸钾氧化灿烂绿的反应具有很强的催化作用。据此 ,建立了催化动力学光度法测定痕量锰 ( )的新方法。该方法的检出限为 2 .2 2× 10 -11g/ m L ,测定线性范围为0 .1— 12 ng/ m L。直接用于环境水样中锰的测定 。

A new sensitive method was developed for determination of trace manganese(Ⅱ). The method is based on the oxidation reaction of resplendency green with KIO 4 catalyzed by Mn(Ⅱ) in HAc\|NaAc buffers. The linear range is 0 1-12ng/mL. The method has been used to direct determination of trace Mn(Ⅱ) in environmental water with satisfactory results.