A simple Schiff base fluorescence probe for highly sensitive and selective detection of Hg2+ and Cu2+

被引：65

作者：

Zhang, Caihong ^{[1
]}

Gao, Baozhen ^{[1
]}

Zhang, Qingyan ^{[1
]}

Zhang, Guomei ^{[1
]}

Shuang, Shaomin ^{[1
]}

Dong, Chuan ^{[1
]}

机构：

[1] Shanxi Univ, Sch Chem & Chem Engn, Ctr Environm Sci Res, Taiyuan 030006, Peoples R China

来源：

TALANTA | 2016年 / 154卷

关键词：

Fluorescent probe; Metal ions; Masking" reagent; Hg2+ and Cu2+; Detection; NAKED EYE DETECTION; COLORIMETRIC SENSORS; GOLD NANOCLUSTERS; MERCURY(II) ION; COPPER; ENHANCEMENT; CHEMOSENSOR; ELEMENTS; LICHENS; ACID;

D O I：

10.1016/j.talanta.2016.03.067

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new Schiff base fluorescent probe, 2-(4-(diphenylamine)benzylidene) thiosemicarbazide (DPBT), was synthesized and its sensing behavior to metal ions were studied by UV-vis and fluorescence spectra. The results show that DPBT can detect Hg2+ sensitively and selectively in weakly acidic and neutral conditions, they form a complex with 2:1. The linear range was 0.095-1.14 mu M and the detection limit was 0.15 nM. In weakly alkaline conditions, DPBT can interaction with Hg2+ and Cu2+ at the same time. We use "masking" reagent, NaBH4, to reduce Hg2+ to Hg degrees, the detection of Cu2+ were achieved. They formed 1:1 complex with the binding constant of 4 x 10(4) M-1, a good linear relationship in 0.45-3.6 mu M and the detection limit of 0.17 mu M. The proposed method was used to determine Hg2+ and Cu2+ in tap water and waste water samples. (c) 2016 Elsevier B.V. All rights reserved.

引用

页码：278 / 283

页数：6

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