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Electrochemical Detection of Trace Arsenic(III) by Nanocomposite of Nanorod-Like alpha-MnO2 Decorated with similar to 5 nm Au Nanoparticles: Considering the Change of Arsenic Speciation
Yang, Meng1,2; Chen, Xing1; Jiang, Tian-Jia1,2; Guo, Zheng1; Liu, Jin-Huai1; Huang, Xing-Jiu1,2
2016-10-04
Source PublicationANALYTICAL CHEMISTRY
AbstractIt has been reported that the majority of groundwater shows weak alkaline in which the As(III) species would be present as neutral H3AsO3 species and ionized H2AsO3- species. However, as most reported previously, electrochemical detection of As(III) has been operated under acidic conditions and the nonionic As(III) (H3AsO3) is the dominant species. Therefore, considering the change of As(III) speciation in different pH conditions, to develop a reliable method for the detection of As(III) in alkaline media might be more meaningful for practical applications. Here, combined the multilayer adsorption of nanorod-like alpha-MnO2, with the excellent electrocatalytic ability of similar to 5 nm Au nanoparticles (AuNPs), an efficient and ultrahigh anti-interference electrochemical detection of As(III) with AuNPs/alpha-MnO2 nanocomposite in alkaline media (nearly real water environment) was developed. Notably, we have provided a thorough electrochemical analytical investigation to confirm the advantage of As(III) detection in alkaline media. The system was evaluated by a series of interference tests, and no obvious, interference from commonly coexisting substances (referring to the groundwater, Togtoh region, Inner Mongolia, China) was observed in alkaline media. Furthermore, electrodes robust stability and excellent reproducibility were obtained. Under the optimized conditions, the limit of detection (36 method) toward As(III) was 0.019 ppb, and the obtained sensitivity was 16.268 +/- 0.242 mu A ppb(-1) cm(-2). Finally, the proposed method has been successfully employed for detection of As(III) in a real water sample.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1021/acs.analchem.6b02629
WOS KeywordANODIC-STRIPPING VOLTAMMETRY ; GLASSY-CARBON ELECTRODES ; FLUORESCENCE SPECTROMETRY ; GOLD MICROELECTRODE ; IONIC LIQUID ; BINARY OXIDE ; WATER ; AS(III) ; SAMPLES ; REMOVAL
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(U1532123 ; National Natural Science Foundation of China(U1532123 ; National Natural Science Foundation of China(U1532123 ; National Natural Science Foundation of China(U1532123 ; 21277146 ; 21277146 ; 21277146 ; 21277146 ; 61573334 ; 61573334 ; 61573334 ; 61573334 ; 21377131 ; 21377131 ; 21377131 ; 21377131 ; 21475133 ; 21475133 ; 21475133 ; 21475133 ; 61474122) ; 61474122) ; 61474122) ; 61474122)
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000384842200054
Citation statistics
Cited Times:69[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/30802
Collection中科院合肥智能机械研究所
Affiliation1.Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Yang, Meng,Chen, Xing,Jiang, Tian-Jia,et al. Electrochemical Detection of Trace Arsenic(III) by Nanocomposite of Nanorod-Like alpha-MnO2 Decorated with similar to 5 nm Au Nanoparticles: Considering the Change of Arsenic Speciation[J]. ANALYTICAL CHEMISTRY,2016,88(19):9720-9728.
APA Yang, Meng,Chen, Xing,Jiang, Tian-Jia,Guo, Zheng,Liu, Jin-Huai,&Huang, Xing-Jiu.(2016).Electrochemical Detection of Trace Arsenic(III) by Nanocomposite of Nanorod-Like alpha-MnO2 Decorated with similar to 5 nm Au Nanoparticles: Considering the Change of Arsenic Speciation.ANALYTICAL CHEMISTRY,88(19),9720-9728.
MLA Yang, Meng,et al."Electrochemical Detection of Trace Arsenic(III) by Nanocomposite of Nanorod-Like alpha-MnO2 Decorated with similar to 5 nm Au Nanoparticles: Considering the Change of Arsenic Speciation".ANALYTICAL CHEMISTRY 88.19(2016):9720-9728.
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