A biomimetic sensor for the detection of lead in water

被引：56
|
作者：
Chu, Wendy [1 ]
Zhang, Yuanchao [1 ,2 ]
Li, Da [1 ]
Barrow, Colin J. [1 ]
Wang, Hongbin [3 ]
Yang, Wenrong [1 ,3 ]
机构：
[1] Deakin Univ, Sch Life & Environm Sci, Geelong, Vic 3217, Australia
[2] Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China
[3] Yunnan Minzu Univ, Sch Chem & Biotechnol, Kunming 650031, Peoples R China
来源：
BIOSENSORS & BIOELECTRONICS | 2015年 / 67卷
基金：
澳大利亚研究理事会;
关键词：
Gold nanoparticle; Core-satellite; Self-assembly; Lead; Glutathion; Calorimetric; CORE-SATELLITE NANOASSEMBLIES; COLORIMETRIC DETECTION; GOLD NANOPARTICLE; METALS;
D O I：
10.1016/j.bios.2014.09.077
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
The monitoring of lead (II) ions (Pb2+) in water is essential for both human health and the environment. Herein, a simple yet innovative biosensor for Pb2+ detection is presented. The sensor is developed by the self-assembly of gold nanoparticles (GNPs) core-satellite structure using naturally occurring tripeptide glutathione (GSH) as linker. The addition of Pb2+ caused a red-to-blue color change and the localized surface plasmon resonance (LSPR) band was shifted to ca. 650 nm. The limit of detection (LOD) is found to be 47.6 nM (9.9 ppb) by UV-vis spectroscopy with high selectivity against other heavy metals. This method offers a new strategy for heavy metal detection using functionalized GNPs. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：621 / 624
页数：4
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