Highly Sensitive, Colorimetric Detection of Mercury(II) in Aqueous Media by Quaternary Ammonium Group-Capped Gold Nanoparticles at Room Temperature
Highly Sensitive, Colorimetric Detection of Mercury(II) in Aqueous Media by Quaternary Ammonium Group-Capped Gold Nanoparticles at Room Temperature
复制标题
室温下用季铵基封端的金纳米颗粒对水介质中的汞 (II) 进行高灵敏度比色检测
DOI：
10.1021/ac1021503
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发表时间：
2010-12-01
影响因子：
7.4
通讯作者：
Jiang, Xingyu
中科院分区：
文献类型：
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作者：
Liu, Dingbin;Qu, Weisi;Jiang, Xingyu
采用季铵端基硫醇修饰的金纳米颗粒，在室温条件下对水溶液中的Hg2+进行了高灵敏度、高选择性的检测，其机制是Hg2+对硫醇的吸附，导致纳米颗粒聚集，在太阳光照的辅助下，检测限可低至30 nM，满足WHO饮用水中He的指导浓度要求。检测的动态范围很宽(3 × 10(-8)-1 × 10(-2) M)，据我们所知，这是迄今为止报道的基于金纳米颗粒（AuNP）的Hg2+检测中最宽的范围
We provide a highly sensitive and selective assay to detect Hg2+ in aqueous solutions using gold nanoparticles modified with quaternary ammonium group-terminated thiols at room temperature The mechanism is the abstraction of thiols by Hg2+ that led to the aggregation of nanoparticles With the assistance of solar light irradiation, the detection limit can be as low as 30 nM, which satisfies the guideline concentration of He in drinking water set by the WHO In addition, the dynamic range of detection is wide (3 x 10(-8)-1 x 10(-2) M) This range, to our best knowledge, is the widest one that has been reported so far in gold nanoparticle (AuNP) based assays for Hg2+