A sub-nanomole level electrochemical method for determination of prochloraz and its metabolites based on medical stone doped disposable electrode.
Identifieur interne : 000789 ( PubMed/Corpus ); précédent : 000788; suivant : 000790A sub-nanomole level electrochemical method for determination of prochloraz and its metabolites based on medical stone doped disposable electrode.
Auteurs : Hongbo Li ; Jing Li ; Chuantao Hou ; Shi Du ; Yanyan Ren ; Zhanjun Yang ; Qin Xu ; Xiaoya HuSource :
- Talanta [ 1873-3573 ] ; 2010.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Imidazoles.
- chemical , chemistry : Chlorophenols, Imidazoles.
- metabolism : Citrus sinensis.
- methods : Chromatography, Gas, Electrochemistry, Microscopy, Electron, Transmission.
- Calibration, Chemistry Techniques, Analytical, Electrodes, Hydrogen-Ion Concentration.
Abstract
A ultrasensitive, simple and convenient electrochemical method was firstly developed for the determination of prochloraz and its metabolites as 2,4,6-trichlorophenol (2,4,6-TCP) using nano-aperture medical stone. Compared with the undoped disposable electrode (UDE), nano-aperture medical stone doped disposable electrode (MSDDE) not only significantly enhances the oxidation peak current of 2,4,6-TCP but also lowers the oxidation overpotential, suggesting that the nano-aperture MSDDE can remarkably improve the sensitivity of 2,4,6-TCP. The experimental conditions such as pH values of buffer solution, the content of nano-aperture medical stone, accumulation potential and time were optimized for the determination of 2,4,6-TCP. At optimal conditions, the oxidation peak current is proportional to the concentration of 2,4,6-TCP over the range from 6.0 × 10(-9) to 8.0 × 10(-5)mol L(-1). Finally, this novel method was successfully employed to detect prochloraz and its metabolites in orange rind with the detection limit of 8.4 × 10(-10)mol L(-1) (0.3 ng g(-1)) and the method was validated by gas chromatography.
DOI: 10.1016/j.talanta.2010.10.002
PubMed: 21111179
Links to Exploration step
pubmed:21111179Le document en format XML
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Compared with the undoped disposable electrode (UDE), nano-aperture medical stone doped disposable electrode (MSDDE) not only significantly enhances the oxidation peak current of 2,4,6-TCP but also lowers the oxidation overpotential, suggesting that the nano-aperture MSDDE can remarkably improve the sensitivity of 2,4,6-TCP. The experimental conditions such as pH values of buffer solution, the content of nano-aperture medical stone, accumulation potential and time were optimized for the determination of 2,4,6-TCP. At optimal conditions, the oxidation peak current is proportional to the concentration of 2,4,6-TCP over the range from 6.0 × 10(-9) to 8.0 × 10(-5)mol L(-1). Finally, this novel method was successfully employed to detect prochloraz and its metabolites in orange rind with the detection limit of 8.4 × 10(-10)mol L(-1) (0.3 ng g(-1)) and the method was validated by gas chromatography.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21111179</PMID><DateCreated><Year>2010</Year><Month>11</Month><Day>29</Day></DateCreated><DateCompleted><Year>2011</Year><Month>04</Month><Day>11</Day></DateCompleted><DateRevised><Year>2012</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-3573</ISSN><JournalIssue CitedMedium="Internet"><Volume>83</Volume><Issue>2</Issue><PubDate><Year>2010</Year><Month>Dec</Month><Day>15</Day></PubDate></JournalIssue><Title>Talanta</Title><ISOAbbreviation>Talanta</ISOAbbreviation></Journal><ArticleTitle>A sub-nanomole level electrochemical method for determination of prochloraz and its metabolites based on medical stone doped disposable electrode.</ArticleTitle><Pagination><MedlinePgn>591-5</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.talanta.2010.10.002</ELocationID><Abstract><AbstractText>A ultrasensitive, simple and convenient electrochemical method was firstly developed for the determination of prochloraz and its metabolites as 2,4,6-trichlorophenol (2,4,6-TCP) using nano-aperture medical stone. Compared with the undoped disposable electrode (UDE), nano-aperture medical stone doped disposable electrode (MSDDE) not only significantly enhances the oxidation peak current of 2,4,6-TCP but also lowers the oxidation overpotential, suggesting that the nano-aperture MSDDE can remarkably improve the sensitivity of 2,4,6-TCP. The experimental conditions such as pH values of buffer solution, the content of nano-aperture medical stone, accumulation potential and time were optimized for the determination of 2,4,6-TCP. At optimal conditions, the oxidation peak current is proportional to the concentration of 2,4,6-TCP over the range from 6.0 × 10(-9) to 8.0 × 10(-5)mol L(-1). Finally, this novel method was successfully employed to detect prochloraz and its metabolites in orange rind with the detection limit of 8.4 × 10(-10)mol L(-1) (0.3 ng g(-1)) and the method was validated by gas chromatography.</AbstractText><CopyrightInformation>Copyright © 2010 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Hongbo</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>College of Chemistry and Engineering, Yangzhou University, 88 South University Avenue, Yangzhou 225002, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Jing</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Hou</LastName><ForeName>Chuantao</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Du</LastName><ForeName>Shi</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Ren</LastName><ForeName>Yanyan</ForeName><Initials>Y</Initials></Author><Author ValidYN="Y"><LastName>Yang</LastName><ForeName>Zhanjun</ForeName><Initials>Z</Initials></Author><Author ValidYN="Y"><LastName>Xu</LastName><ForeName>Qin</ForeName><Initials>Q</Initials></Author><Author ValidYN="Y"><LastName>Hu</LastName><ForeName>Xiaoya</ForeName><Initials>X</Initials></Author></AuthorList><Language>ENG</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2010</Year><Month>Oct</Month><Day>08</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Talanta</MedlineTA><NlmUniqueID>2984816R</NlmUniqueID><ISSNLinking>0039-9140</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D002733">Chlorophenols</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D007093">Imidazoles</NameOfSubstance></Chemical><Chemical><RegistryNumber>99SFL01YCL</RegistryNumber><NameOfSubstance UI="C045362">prochloraz</NameOfSubstance></Chemical><Chemical><RegistryNumber>MHS8C5BAUZ</RegistryNumber><NameOfSubstance UI="C024564">2,4,6-trichlorophenol</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002138" MajorTopicYN="N">Calibration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002623" MajorTopicYN="N">Chemistry Techniques, Analytical</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002733" MajorTopicYN="N">Chlorophenols</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002849" MajorTopicYN="N">Chromatography, Gas</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032084" MajorTopicYN="N">Citrus sinensis</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004563" MajorTopicYN="N">Electrochemistry</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004566" MajorTopicYN="N">Electrodes</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006863" MajorTopicYN="N">Hydrogen-Ion Concentration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007093" MajorTopicYN="N">Imidazoles</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="Y">analysis</QualifierName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D046529" MajorTopicYN="N">Microscopy, Electron, Transmission</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2010</Year><Month>8</Month><Day>9</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2010</Year><Month>9</Month><Day>28</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2010</Year><Month>10</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2010</Year><Month>11</Month><Day>30</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2010</Year><Month>11</Month><Day>30</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>4</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21111179</ArticleId><ArticleId IdType="pii">S0039-9140(10)00775-7</ArticleId><ArticleId IdType="doi">10.1016/j.talanta.2010.10.002</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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