Colorimetric detection of Hg²⁺ based on target-mediated growth of gold nanoparticles

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• 作者：Yan Zhao^aAuthor Vitae ; Lili Gui^bAuthor Vitae ; Dr Zhengbo Chen^a ; ^{czb979216@sina.com}Author Vitae
• 关键词：Colorimetry ; Gold nanoparticles ; Mercury ; Hydroxylamine ; HAuCl4
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：31 March 2017
• 年：2017
• 卷：241
• 期：Complete
• 页码：262-267
• 全文大小：1472 K
• 卷排序：241

文摘

Hg2+ is reduced to Hg by citrate to form gold amalgamation on the surface of AuNPs. Grown AuNPs were formed in the HAuCl4/NH2OH reaction. The rate of AuNP growth is highly dependent on Hg2+ concentration. The detection limit can reach as low as about 0.26 nM.