摘要
合成了新试剂二安替比林对羟基苯乙烯基甲烷（ＤＡｐＨＶＭ），并研究了其和格（Ⅵ）的显色反应，在磷酸介质中，Ｍｈ（Ⅱ）存在下，ＤＡｐＨＶＭ在室温下和铬（Ⅵ）生成红色产物， λｍａｘ＝ ５４０ ｎｍ，ε＝ １．７６ ｘ１０６Ｌ·ｍｏｌ－１·ｃｍ－１，铬（Ⅵ）含量在 ０～ ３０μｇ／Ｌ内符合比尔定律，方法用于环境水样中铬（Ⅵ）的测定，结果令人满意。
Diantipyryl-(p-hydroxy)-vinylphenylmethane (DApHVM) was synthesized and its color reaction with chromium(Ⅵ) was studied. In the presence of Mn(Ⅱ), DApHVM reacts with chromium(Ⅵ) to form a red product in phosporic acid medium. The molar absorptivity of the Cr(Ⅵ)-DApHVM complex is l .76 x 106L.mol-1. cm-1 at 540 nm. Beer's law is obeyed in the of 0 ~ 30 μg/L. This method has been applied to the determination of chromium(Ⅵ) in water with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2000年第7期890-892,共3页
Chinese Journal of Analytical Chemistry
基金
云南省教委自然科学基金!(编号:9911139)。
关键词
显色反应
铬
光度法
环境水样
DAPHVM
Diantipyryl-(p-hydroxy)-vinylphenylmethane, chromium(Ⅵ), spectrophotometry
