Hydrogen-bonding-induced colorimetric detection of melamine by nonaggregation-based au-nps as a probe | |
Cao, Qian1; Zhao, Hong1; He, Yujian1,2; Li, Xiangjun1; Zeng, Lixi1; Ding, Nan1; Wang, Jian1; Yang, Jie1; Wang, Guangwei3 | |
刊名 | Biosensors & bioelectronics |
2010-08-15 | |
卷号 | 25期号:12页码:2680-2685 |
关键词 | 3,5-dihydroxybenzoic acid Melamine Gold nanoparticles Hydrogen-bonding |
ISSN号 | 0956-5663 |
DOI | 10.1016/j.bios.2010.04.046 |
通讯作者 | Zhao, hong(hongzhao@gucas.ac.cn) |
英文摘要 | A colorimetric, label-free, and nonaggregation-based gold nanoparticles probe has been developed for the detection of melamine. gold nanoparticles were generated using 3,5-dihydroxybenzoic acid as a reducer without adding gold nanoparticle seeds at room temperature. upon the addition of melamine, the reducer 3,5-dihydroxybenzoic acid can interact with melamine through strong hydrogen-bonding interaction. consequently, the formation of gold nanoparticles was interrupted by melamine since there was not enough reducer for the reduction of au(3+) ion. and the color change from purple to yellowgreen with increasing melamine concentration was observed. the plasmon absorbance of the formed au-nps allows the quantitative detection of melamine. a sensitive linear correlation existed between the absorbance and the logarithm of melamine concentration ranging from 1 x 10(-9) m to 1 x 10(-5) m with a linear coefficiency of 0.993. the system has a high selectivity to melamine with a low detection limit of 8 x 10(-10) m. (c) 2010 elsevier b.v. all rights reserved. |
WOS关键词 | TANDEM MASS-SPECTROMETRY ; GOLD NANOPARTICLES ; CYANURIC ACID ; AQUEOUS-SOLUTION ; LIQUID-CHROMATOGRAPHY ; INFANT FORMULA ; COLOR-CHANGE ; MILK ; SPECTROSCOPY ; AMMELIDE |
WOS研究方向 | Biophysics ; Biotechnology & Applied Microbiology ; Chemistry ; Electrochemistry ; Science & Technology - Other Topics |
WOS类目 | Biophysics ; Biotechnology & Applied Microbiology ; Chemistry, Analytical ; Electrochemistry ; Nanoscience & Nanotechnology |
语种 | 英语 |
出版者 | ELSEVIER ADVANCED TECHNOLOGY |
WOS记录号 | WOS:000279538700022 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2414263 |
专题 | 中国科学院大学 |
通讯作者 | Zhao, Hong |
作者单位 | 1.Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China 2.Peking Univ, State Key Lab Nat & Biomimet Drugs, Beijing 100191, Peoples R China 3.Hunan Normal Univ, Coll Med, Changsha 410006, Hunan, Peoples R China |
推荐引用方式 GB/T 7714 | Cao, Qian,Zhao, Hong,He, Yujian,et al. Hydrogen-bonding-induced colorimetric detection of melamine by nonaggregation-based au-nps as a probe[J]. Biosensors & bioelectronics,2010,25(12):2680-2685. |
APA | Cao, Qian.,Zhao, Hong.,He, Yujian.,Li, Xiangjun.,Zeng, Lixi.,...&Wang, Guangwei.(2010).Hydrogen-bonding-induced colorimetric detection of melamine by nonaggregation-based au-nps as a probe.Biosensors & bioelectronics,25(12),2680-2685. |
MLA | Cao, Qian,et al."Hydrogen-bonding-induced colorimetric detection of melamine by nonaggregation-based au-nps as a probe".Biosensors & bioelectronics 25.12(2010):2680-2685. |
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