Ultrasensitive colorimetric detection of Cu2+ ion based on catalytic oxidation of L-cysteine
文献类型：期刊论文
| 作者 | Li, Bowei ; Chen, Lingxin
|
| 刊名 | BIOSENSORS & BIOELECTRONICS
 |
| 出版日期 | 2015-02-15 |
| 卷号 | 64页码:81-87 |
| 关键词 | Cu2+ ion Catalytic oxidation L-cysteine Colorimetric detection |
| ISSN号 | 0956-5663 |
| 产权排序 | [Yin, Kun; Li, Bowei; Zhang, Weiwei; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Wang, Xiaochun] Minist Land & Resources, Natl Res Ctr Geoanal, Key Lab Ecol Geochem, Beijing 100037, Peoples R China; [Yin, Kun] Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 通讯作者 | Zhang, WW (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. wwzhang@yic.ac.cn ; lxchen@yic.ac.cn |
| 中文摘要 | As an essential element, copper ion (Cu2+) plays important roles in human beings for its participation in diverse metabolic processes as a cofactor and/or a structural component of enzymes. However, excessive uptake of Cu2+ ion gives rise to the risk of certain diseases. So, it is important to develop simple ways to monitor and detect Cu2+ ion. In this study, a simple, facile colorimetric sensor for the ultrasensitive determination of Cu2+ ion was developed based on the following principle: L-cysteine and 1-chloro-2,4-dinitrobenzene (CDNB) could be conjugated to form the yellow product 2,4-dinitrophenylcysteine (DNPC), which was measurable at 355 nm; however, upon addition of Cu2+ ion, the absorbance of DNPC would be decreased owing to the Cu2+ ion catalytic oxidation of L-cysteine to L-cystine in the presence of O-2. Thus, the colorimetric detection of Cu2+ ion could be achieved. The optimal pH, buffer, temperature and incubation time for the colorimetric sensor were obtained of pH 6.8 in 0.1 M HEPES solution, 90 degrees C and 50 min, respectively. A good linearity within the range of 0.8-10 nM (r = 0.996) was attained, with a high detectability up to 0.5 nM. Analyses of Cu2+ ion in drinking water, lake water, seawater and biological samples were carried out and the method performances were found to agree well with that obtained by ICP-MS. The developed simple colorimetric sensor proved applicable for Cu2+ ion determination in real samples with high sensitivity and selectivity. (C) 2014 Elsevier B.V. All rights reserved. |
| 学科主题 | Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical; Electrochemistry; Nanoscience & Nanotechnology |
| 研究领域[WOS] | Innovation Projects of the Chinese Academy of Sciences [KZCX2-EW-206] ; National Natural Science Foundation of China [31200041, 21205131, 21275158] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars ; State Education Ministry ; Key Research Program of the Chinese Academy of Sciences [KZZD-EW-14] |
| 关键词[WOS] | FUNCTIONALIZED GOLD NANOPARTICLES ; COPPER IONS ; ELECTROCHEMICAL DETERMINATION ; FLUORESCENT-PROBE ; AQUEOUS-SOLUTION ; AMINO-ACIDS ; SEAWATER ; KINETICS ; IRON ; DERIVATIZATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000345059100014 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/8654]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Bowei,Chen, Lingxin. Ultrasensitive colorimetric detection of Cu2+ ion based on catalytic oxidation of L-cysteine[J]. BIOSENSORS & BIOELECTRONICS,2015,64:81-87. |
| APA | Li, Bowei,&Chen, Lingxin.(2015).Ultrasensitive colorimetric detection of Cu2+ ion based on catalytic oxidation of L-cysteine.BIOSENSORS & BIOELECTRONICS,64,81-87. |
| MLA | Li, Bowei,et al."Ultrasensitive colorimetric detection of Cu2+ ion based on catalytic oxidation of L-cysteine".BIOSENSORS & BIOELECTRONICS 64(2015):81-87. |
入库方式： OAI收割
来源：烟台海岸带研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。