A new simple and reliable Hg2+ detection system based on anti-aggregation of unmodified gold nanoparticles in the presence of O-phenylenediamine
文献类型：期刊论文
| 作者 | Li, Yong-Long ; Leng, Yu-Min ; Zhang, Yu-Jie ; Li, Tian-Hua ; Shen, Zhe-Yu ; Wu, Ai-Guo |
| 刊名 | SENSORS AND ACTUATORS B-CHEMICAL
 |
| 出版日期 | 2014 |
| 卷号 | 200页码:140 |
| 中文摘要 | A simple and reliable colorimetric detection system based on anti-aggregation of gold nanoparticles (AuNPs) is proposed for rapid detection of Hg2+ with high selectivity and sensitivity. O-phenylenediamine (OPD) can cause the aggregation of AuNPs due to formation of the strong covalent NH-Au bond, and then induce color change of the AuNPs solution from red to blue. However, in the presence of Hg2+, OPD prefers to combine with Hg2+ rather than AuNPs resulting in inhibition of the color change. Based on the anti-aggregation mechanism, Hg2+ can be detected by observing the color change of AuNPs solution containing OPD. After optimization, the selectivity of this Hg2+ detection system by the naked eyes and UV-vis spectra is excellent comparing with other ions. The limit of the detection CLOD) is 0.1 mu M by the naked eyes and 5.0 nM by UV-vis spectroscopy, which is lower than the mercury toxic level (10 nM) defined by US Environmental Protection Agency. It's a good linear relationship between A(520)/A(680) and Hg2+. concentration from 0.01 mu M to 2.0 mu M, which is used for the quantitative assay of Hg2+. The applicability of our detection system is also verified by analysis of Hg2+ in tap water and lake water. (C) 2014 Elsevier B.V. All rights reserved. |
| 公开日期 | 2015-09-20 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/11775]  |
| 专题 | 宁波材料技术与工程研究所_2014专题 |
| 推荐引用方式 GB/T 7714 | Li, Yong-Long,Leng, Yu-Min,Zhang, Yu-Jie,et al. A new simple and reliable Hg2+ detection system based on anti-aggregation of unmodified gold nanoparticles in the presence of O-phenylenediamine[J]. SENSORS AND ACTUATORS B-CHEMICAL,2014,200:140. |
| APA | Li, Yong-Long,Leng, Yu-Min,Zhang, Yu-Jie,Li, Tian-Hua,Shen, Zhe-Yu,&Wu, Ai-Guo.(2014).A new simple and reliable Hg2+ detection system based on anti-aggregation of unmodified gold nanoparticles in the presence of O-phenylenediamine.SENSORS AND ACTUATORS B-CHEMICAL,200,140. |
| MLA | Li, Yong-Long,et al."A new simple and reliable Hg2+ detection system based on anti-aggregation of unmodified gold nanoparticles in the presence of O-phenylenediamine".SENSORS AND ACTUATORS B-CHEMICAL 200(2014):140. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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