Synergy of glutathione, dithiothreitol and N-acetyl-L-cysteine self-assembled monolayers for electrochemical assay: sensitive determination of arsenic(III) in environmental and drinking water
文献类型:期刊论文
作者 | Chen, Lingxin1![]() ![]() ![]() ![]() |
刊名 | ANALYST
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出版日期 | 2011 |
卷号 | 136期号:21页码:4526-4532 |
关键词 | Atomic Fluorescence Spectrometry Anodic-stripping Voltammetry Modified Gold Electrode Dna Hybridization Carbon Electrode Acid Speciation Oxidation Preconcentration Identification |
ISSN号 | 0003-2654 |
产权排序 | [Chen, Lingxin; Zhou, Na; Li, Jinhua; Chen, Zhaopeng; Liao, Chunyang] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Chen, Jiannong] Ludong Univ, Dept Phys, Yantai 264025, Peoples R China |
通讯作者 | Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China |
文献子类 | Article |
英文摘要 | A simple and efficient electrochemical assay based on self-assembled monolayers (SAMs) was developed for the highly sensitive determination of arsenic(III) in water samples. The synergy of glutathione (GSH), dithiothreitol (DTT) and N-acetyl-L-cysteine (NAC) mixed SAMs enhanced the detection specificity and sensitivity of As(III) in water samples, resulting from the immobilization of a large number of As(III) moieties on the gold electrode surface via As-O and As-S linkages. After accumulating As(III), anodic stripping voltammetry (ASV) was performed, and linear sweep voltammetry (LSV) was employed for signal recording. Several main voltammetric parameters were optimized as follows: supporting electrolyte, 1 mol L(-1) HCl; deposition potential, -0.35 V; deposition time, 150 s. A good linear relationship (R - 0.9980) was attained between the concentration of the As(III) standard and peak current, in the range of 3-100 mu g L(-1). The limit of detection (LOD) of this sensing system was determined to be 0.5 mu g L(-1) at a signal-to-noise ratio of 3. A variety of common coexistent ions in water samples were examined, showing no obvious interferences on the As(III) determination. The amenability of this method to the analyses of water samples was also investigated. High recovery of 90.5% with the precision of 5.1% at spiked 10 mu g L(-1), and low LOD of 0.3 mu g L(-1) were obtained in seawater. The synergy effect of GSH, DTT and NAC provided the possibility for the rapid and sensitive LSV determination of As(III) in complicated water samples.; A simple and efficient electrochemical assay based on self-assembled monolayers (SAMs) was developed for the highly sensitive determination of arsenic(III) in water samples. The synergy of glutathione (GSH), dithiothreitol (DTT) and N-acetyl-L-cysteine (NAC) mixed SAMs enhanced the detection specificity and sensitivity of As(III) in water samples, resulting from the immobilization of a large number of As(III) moieties on the gold electrode surface via As-O and As-S linkages. After accumulating As(III), anodic stripping voltammetry (ASV) was performed, and linear sweep voltammetry (LSV) was employed for signal recording. Several main voltammetric parameters were optimized as follows: supporting electrolyte, 1 mol L(-1) HCl; deposition potential, -0.35 V; deposition time, 150 s. A good linear relationship (R - 0.9980) was attained between the concentration of the As(III) standard and peak current, in the range of 3-100 mu g L(-1). The limit of detection (LOD) of this sensing system was determined to be 0.5 mu g L(-1) at a signal-to-noise ratio of 3. A variety of common coexistent ions in water samples were examined, showing no obvious interferences on the As(III) determination. The amenability of this method to the analyses of water samples was also investigated. High recovery of 90.5% with the precision of 5.1% at spiked 10 mu g L(-1), and low LOD of 0.3 mu g L(-1) were obtained in seawater. The synergy effect of GSH, DTT and NAC provided the possibility for the rapid and sensitive LSV determination of As(III) in complicated water samples. |
学科主题 | Chemistry |
URL标识 | 查看原文 |
WOS关键词 | ATOMIC FLUORESCENCE SPECTROMETRY ; ANODIC-STRIPPING VOLTAMMETRY ; MODIFIED GOLD ELECTRODE ; DNA HYBRIDIZATION ; CARBON ELECTRODE ; ACID ; SPECIATION ; OXIDATION ; PRECONCENTRATION ; IDENTIFICATION |
WOS研究方向 | Chemistry |
语种 | 英语 |
WOS记录号 | WOS:000295727900022 |
资助机构 | National Natural Science Foundation of China[20975089, 20907039]; Chinese Academy of Sciences[KZCX2-EW-206]; Department of Science and Technology of Shandong Province of China[2008GG20005005]; Yantai Research and Development Program of China[2010158, 2007323]; Natural Science Foundation of Shandong Province of China[ZR2010BQ027]; Shandong province scientific instrument equipment upgrading technology project[2010GJC20808-16] |
公开日期 | 2012-03-06 |
源URL | [http://ir.yic.ac.cn/handle/133337/5345] ![]() |
专题 | 烟台海岸带研究所_山东省海岸带环境工程技术研究中心 烟台海岸带研究所_污染过程与控制实验室 |
作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China 2.Ludong Univ, Dept Phys, Yantai 264025, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Lingxin,Zhou, Na,Li, Jinhua,et al. Synergy of glutathione, dithiothreitol and N-acetyl-L-cysteine self-assembled monolayers for electrochemical assay: sensitive determination of arsenic(III) in environmental and drinking water[J]. ANALYST,2011,136(21):4526-4532. |
APA | Chen, Lingxin,Zhou, Na,Li, Jinhua,Chen, Zhaopeng,Liao, Chunyang,&Chen, Jiannong.(2011).Synergy of glutathione, dithiothreitol and N-acetyl-L-cysteine self-assembled monolayers for electrochemical assay: sensitive determination of arsenic(III) in environmental and drinking water.ANALYST,136(21),4526-4532. |
MLA | Chen, Lingxin,et al."Synergy of glutathione, dithiothreitol and N-acetyl-L-cysteine self-assembled monolayers for electrochemical assay: sensitive determination of arsenic(III) in environmental and drinking water".ANALYST 136.21(2011):4526-4532. |
入库方式: OAI收割
来源:烟台海岸带研究所
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