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	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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