Colorimetric detection of sulfide based on target-induced shielding against the peroxidase-like activity of gold nanoparticles
Colorimetric detection of sulfide based on target-induced shielding against the peroxidase-like activity of gold nanoparticles
复制标题
基于目标诱导屏蔽金纳米颗粒的类过氧化物酶活性的硫化物比色检测
DOI：
10.1016/j.aca.2014.09.023
复制
发表时间：
2014-12-10
影响因子：
6.2
通讯作者：
Chen, Wei
中科院分区：
文献类型：
--
作者：
Deng, Hao-Hua;Weng, Shao-Huang;Chen, Wei
基于裸金纳米粒子对过氧化物酶活性的屏蔽作用，提出了一种高灵敏度的硫化物比色识别传感方法。新检测系统的重要特征是其简单性和成本效益。裸金纳米颗粒的硫化物的识别可以在几秒钟内完成，并可以在约10分钟内完成的测定。此外，新的测定系统不需要GNP的表面改性，以获得硫化物的特异性，并且不需要盐诱导的聚集步骤。该方法对硫化物的检测限为80 nM。这些特点使该传感器成为一个潜在的强有力的工具，用于定量测定水样中的硫化物。(C)2014爱思唯尔有限公司版权所有。
Colorimetric recognition and sensing of sulfide with high sensitivity was proposed based on target-induced shielding against the peroxidase-like activity of bare gold nanoparticles. Significant features of the new assay system are its simplicity and cost-effectiveness. The recognition of sulfide by bare gold nanoparticles can be fulfilled in a few seconds and the assay can be accomplished in about 10 min. Furthermore, the new assay system does not require surface modification of GNPs to obtain the specificity for sulfide, and a salt-induced aggregation step is not needed. The detection limit of this method for sulfide was 80 nM. These features make this sensor a potentially powerful tool for the quantitative determination of sulfide in water samples. (C) 2014 Elsevier B.V. All rights reserved.