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Colorimetric detection of mercury, lead and copper ions simultaneously using protein-functionalized gold nanoparticles
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2008guoym: ½ð±Ò+5 2014-06-07 18:54:12
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Colorimetric detection of mercury, lead and copper ions simultaneously using protein-functionalized gold nanoparticles
×÷Õß:Guo, YM (Guo, Yongming)[ 1,2,3 ] ; Wang, Z (Wang, Zhuo)[ 2 ] ; Qu, WS (Qu, Weisi)[ 2 ] ; Shao, HW (Shao, Huawu)[ 1 ] ; Jiang, XY (Jiang, Xingyu)[ 2 ]
BIOSENSORS & BIOELECTRONICS
¾í: 26  ÆÚ: 10  Ò³: 4064-4069
DOI: 10.1016/j.bios.2011.03.033
³ö°æÄê: JUN 15 2011
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A simple, cost-effective and rapid colorimetric method for any or all of Hg2+ Pb2+ and Cu2+ detection using papain-functionalized gold nanoparticles (P-AuNPs) has been developed. Papain is a protein with seven cystein residues, which can selectively bind with Hg2+, Pb2+ and Cu2+. We functionalized gold nanoparticles with papain. The P-AuNPs could be used to simultaneously detect Hg2+, Pb2+ and Cu2+, and showed different responses to the three ions in an aqueous solution based on the aggregation-induced color change of gold nanoparticles. The P-AuNPs displayed the most obvious response to mercury ions in water in contrast to lead and copper ions, and the real water sample analysis verified the conclusion. The sensitivity of the detection system was influenced by the pH of the P-AuNPs solution, the concentration of P-AuNPs and the size of gold nanoparticles, and we found that larger gold nanoparticles contributed to more sensitive results. The detection system can detect as low as 200 nM Hg2+, Pb2+ or Cu2+ using 42 nm gold nanoparticles. We expect our approach to have wide-ranging applications in the developing region for monitoring water quality in some areas. (C) 2011 Elsevier B.V. All rights reserved.
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×÷Õ߹ؼü´Ê:Gold nanoparticles; Mercury ions; Lead ions; Copper ions; Protein; Colorimetric detection
KeyWords PlusIRECTED SYNTHESIS; METAL-IONS; OLIGONUCLEOTIDES; CHEMISTRY; PAPAIN; ASSAY
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ͨѶ×÷ÕßµØÖ·: Shao, HW (ͨѶ×÷Õß)
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ        Chinese Acad Sci, Chengdu Inst Biol, Nat Prod Res Ctr, Chengdu 610041, Sichuan, Peoples R China.
µØÖ·:
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ        [ 1 ] Chinese Acad Sci, Chengdu Inst Biol, Nat Prod Res Ctr, Chengdu 610041, Sichuan, Peoples R China
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ        [ 2 ] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ        [ 3 ] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
µç×ÓÓʼþµØÖ·:wangz@nanoctr.cn; shaohw@cib.ac.cn; xingyujiang@nanoctr.cn
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»ù½ð×ÊÖú»ú¹¹        ÊÚȨºÅ
National Natural Science Foundation of China        
90813032
20890020
21025520
Chinese Academy of Sciences        
KJCX2-YW-M15
Scientific Research Foundation for the Returned Overseas Chinese Scholars, the Ministry of Science and Technology        
2009CB30001
2011CB933201
Ministry of Human Resources and Social Security of the People's Republic of China          
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ELSEVIER ADVANCED TECHNOLOGY, OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Àà±ð / ·ÖÀà
Ñо¿·½Ïò:Biophysics; Biotechnology & Applied Microbiology; Chemistry; Electrochemistry; Science & Technology - Other Topics
Web of Science Àà±ð:Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical; Electrochemistry; Nanoscience & Nanotechnology
ÎÄÏ×ÐÅÏ¢
ÎÄÏ×ÀàÐÍ:Article
ÓïÖÖ:English
Èë²ØºÅ: WOS:000291904000014
ISSN: 0956-5663
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IDS ºÅ: 781AW
Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 33
Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 46
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3Â¥: Originally posted by mingshine at 2014-06-07 17:36:36
Èë²ØºÅ: WOS:000291904000014

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