新体系Mn(Ⅱ)-KIO_4-镁试剂Ⅱ催化动力学光度法测定痕量锰的研究  

CATALYTIC SPECTROPHOMETIC DETERMINATION OF TRACE MANGANESE(Ⅱ) WITH MANGANESE(Ⅱ) POTASSIUM PERIODATE MAGNESON NEW SYSTEM

作　　者：张瑾[1] 翟殿棠[1] 崔丽君[1] 李慧芝[1] 

机构地区：[1]山东建材学院应化系

出　　处：《山东建材学院学报》1997年第1期89-92,共4页Journal of Shandong Institute of Building Materials

摘　　要：研究了在Ｎａ２ＨＰＯ４－ＮａＯＨ缓冲溶液中痕量锰催化高碘酸氧化镁试剂Ⅱ〔即４－（４－硝基苯偶氮）－１－萘酚〕使之褪色，并研究了催化动力学条件。建立了一种高灵敏、高选择性测定痕量锰的方法。其测定范围为０．０１～２．５μｇ／２５ｍＬ，检测限为２．６８×１０－１１ｇ／ｍＬ。A method for the determination of trace manganse which can catalyze the discoloring reaction of potassiun periodate to oxidize magneson Ⅱ 4 (4 nitrophenylazo) 1 naphthol in Na 2HPO 4 NaOH solution was proposed,and the kinetic conditions was studied.The method has high sensitivity and selectivity for determining teace maganese in samples.The range of determination is 0 01 2 5μg/25mL,and the limiting detection is 2 68×10 -11 g/mL.

关 键 词：催化反应 光度法 锰 

分 类 号：O657.3[理学—分析化学] O614.711[理学—化学]