二安替比林对羟基苯乙烯基甲烷与锰显色反应研究应用  

STUDY ON COLOR REACTION OF DIANTIPYRYL-(p-HYDROXY)-VINYLPHENYLMETHANE WITH MANGANESE AND ITS APPLICATION

作　　者：周世萍[1] 邬春华[1] 汤丹瑜[1] 尹家元[1] 

机构地区：[1]云南大学化学系,昆明650091

出　　处：《干旱环境监测》2000年第1期4-5,15,共3页Arid Environmental Monitoring

基　　金：云南省教委自然科学基金

摘　　要：合成了新试剂二安替比林对羟基苯乙烯基甲烷 (DAPHVM) ,并研究了 DAPHVM和 Mn( )的显色反应 ,在强碱性介质中 ,空气氧化 Mn( )生成 Mn( ) ,然后在磷酸介质中 ,Mn( )氧化 DAPHVM生成红色产物 ,λmax=5 40 nm,ε=1.36× 10 5 L· mol- 1 · cm- 1 。 Mn( )含量在 0～ 0 .2 mg/ L内符合比耳定律。方法用于茶叶样品中锰的测定 ,结果令人满意。Diantipyryl-(p-hydroxy)-vinylphenylmethane(DApHVM) was synthesized,and its color reaction of DApHVM with manganese was studied.In the presence of alkaline medium,Mn(Ⅱ) was oxidized to Mn(Ⅳ) by air.Then,Mn(Ⅳ) can react with DApHVM in phosphoric acid medium to form a red product.The major absorptivity is 1.36×10 5 L·mol -1 ·cm -1 at 540 nm,Beer's law is obeyed in the range of 0~10 μg/50ml.This method can be applied to the determination of manganese in tea with satisfactory results.

关 键 词：生物监测 锰 光度法 茶叶 DApHVM 试剂 

分 类 号：X835.02[环境科学与工程—环境工程]