An optical sensor for mercuric ion based on immobilization of Rhodamine B derivative in PVC membrane

被引：24
|
作者：
Ling, Lixin [3 ]
Zhao, Yan [1 ]
Du, Juan [1 ]
Xiao, Dan [1 ,2 ]
机构：
[1] Sichuan Univ, Coll Chem, Chengdu 610064, Peoples R China
[2] Sichuan Univ, Coll Chem Engn, Chengdu 610064, Peoples R China
[3] Chongqing Univ Arts & Sci, Coll Chem & Environm Engn, Yongchuan 402168, Peoples R China
来源：
TALANTA | 2012年 / 91卷
基金：
中国国家自然科学基金;
关键词：
Rhodamine B; Mercuric ion; Optical membrane; Flow system; Fluorescent enhancement; BULK OPTODE MEMBRANE; CHEMICAL SENSOR; SELECTIVE FLUORESCENT; RAPID-DETERMINATION; SOIL SAMPLES; HG(II); PROBE; CHEMOSENSOR; HG2+; CHEMODOSIMETER;
D O I：
10.1016/j.talanta.2012.01.013
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel prepared mercuric ion PVC membrane sensor based on a Rhodamine B derivative (RND) as a selective sensing material was described. The sensor exhibited a specific fluorescent off-on response to Hg2+, and showed a linear response over the Hg2+ concentration range from 1.0 x 10(-9) to 2.0 x 10(-3) M with a very low detection limit of 8.1 x 10(-10) M in bulk method. The sensor has also been incorporated into a flow-cell for determination of Hg2+ in flowing streams with improved sensitivity and detection limit. The sensor shows excellent selectivity toward Hg2+ with respect to common coexisting cations. The proposed fluorescence optode was successfully applied to detect Hg2+ in environmental water samples and fish. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：65 / 71
页数：7
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