Determination of heavy metal ions based on quenching of the rare earth luminescence

被引：11

作者：

Arakawa, T ^{[1
]}

Muraki, A ^{[1
]}

Hashimoto, M ^{[1
]}

机构：

[1] Kinki Univ, Dept Biol & Environm Chem, Sch Human Oriented Sci & Engn, Fukuoka 8208555, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 108卷 / 1-2期

关键词：

heavy metal ions; rare earth; luminescence; decay time;

D O I：

10.1016/j.snb.2004.11.060

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The determination of heavy metal ions based on quenching of the rare earth luminescence was investigated. A few heavy metal ions efficiently quenched the luminescence of Ce3+ in polymerized cellulose films, which were obtained by Na-CMC (sodium carboxymethyl cellulose) solution and CeCl3 solution or the mixed solution of CeCl3 and a heavy metal chloride. Also, the decay time of Ce3+ ions (tau) in Ce3+-Cu+, Ce3+-Cu2+, Ce3+-Zn2+ and Ce3+-Pb2+ system was shorter than that of only Ce3+ system (tau(0)). The linear relationship between the concentration of Cu2+ Zn2+ or Pb2+ ions and tau(0)/tau reflected the dynamic quenching, as predicted by the Stern-Volmer equation. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：832 / 835

页数：4

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