摘要
本文首次用偏最小二乘法解析超高灵敏多元金属卟啉螯合体系的重叠荧光光谱，提出了同时测定痕量锌镉铅的计算分析方法。在强碱性介质中，Ｔｗｅｅｎ－８０增效作用下，于沸水浴内加热３０ｍｉｎ，Ｚｎ２＋、Ｃｄ２＋、Ｐｂ２＋与ｍｅｓｏ－四－（４－甲氧苯基）－卟啉螯合荧光反应能进行完全。该法用于合成试样及环境水样中锌、镉、铅的同时测定，加入回收率在９３．２％～１０７％以内。
The fluorescence spectra of superhighly sensitive chelate systems containing multicomponent metal porphyrins are analysed by partial least squares method,and a computerized analysis for the simultaneous determination of zinc,cadmium and lead is developed.Zinc,cadmium and lead can quantitatively combine with meso-tetrakis-(4-methoxyphenyl)-porphyrin in a strong base medium and in the presence of Tween80 when they are heated for 30 min in a boiling waterbath.The proposed method has been applied to the simultane ous determination of zinc,cadmium and lead in artificial and environmental water samples,and the recovery ratios are in the range of 93.2—107%.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1998年第4期472-476,共5页
Spectroscopy and Spectral Analysis
基金
安徽省自然科学基金
关键词
荧光光谱
TMOPP
锌
镉
铅
卟啉
测定
螯合物
Fluorescence spectrum, Partial least squares, Zinc, Cadmium, Lead, Porphyrin, Simultaneous determination
