A selective spectrofluorimetric method for carbendazim determination in oranges involving inclusion-complex formation with cucurbit[7]uril.
Identifieur interne : 000825 ( PubMed/Curation ); précédent : 000824; suivant : 000826A selective spectrofluorimetric method for carbendazim determination in oranges involving inclusion-complex formation with cucurbit[7]uril.
Auteurs : M. Del Pozo [Espagne] ; L. Hernández ; C. QuintanaSource :
- Talanta [ 1873-3573 ] ; 2010.
English descriptors
- KwdEn :
- Benzimidazoles (analysis), Bridged Compounds (analysis), Carbamates (analysis), Chemistry Techniques, Analytical, Citrus sinensis (metabolism), Food Analysis (methods), Food Contamination, Hydrogen-Ion Concentration, Imidazoles (analysis), Ions, Limit of Detection, Molecular Conformation, Pesticide Residues (analysis), Pesticides (analysis), Reproducibility of Results, Spectrometry, Fluorescence (methods).
- MESH :
- chemical , analysis : Benzimidazoles, Bridged Compounds, Carbamates, Imidazoles, Pesticide Residues, Pesticides.
- metabolism : Citrus sinensis.
- methods : Food Analysis, Spectrometry, Fluorescence.
- Chemistry Techniques, Analytical, Food Contamination, Hydrogen-Ion Concentration, Ions, Limit of Detection, Molecular Conformation, Reproducibility of Results.
Abstract
The increase in fluorescence intensity with respect to carbendazim that occurs as a result of supramolecular-complex formation between carbendazim and cucurbit[7]uril has been studied. This host-guest interaction has been employed to develop a sensitive and selective method for benzoimidazole-type pesticide determination in fruit samples. The association constant and stoichiometry of the complex formed are reported herein, and the influence of experimental variables, such as the pH or ionic strength of the solution, on complex formation and the presence of interfering substances is also discussed. Under the optimal conditions found, the developed method allows the detection of carbendazim at a 5.0x10(-9)M level. To test the method, matrix solid phase dispersion was employed as a sample preparation method for carbendazim determination in orange samples with an RSD (%) (n=3) value of 5%. The LOD and LOQ values calculated for real samples were 0.10 and 0.52mg/kg, respectively, thus showing that the proposed method is sensitive enough to meet legal requirements.
DOI: 10.1016/j.talanta.2010.02.066
PubMed: 20441936
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Quintana</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2010">2010</date><idno type="RBID">pubmed:20441936</idno><idno type="pmid">20441936</idno><idno type="doi">10.1016/j.talanta.2010.02.066</idno><idno type="wicri:Area/PubMed/Corpus">000825</idno><idno type="wicri:Area/PubMed/Curation">000825</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">A selective spectrofluorimetric method for carbendazim determination in oranges involving inclusion-complex formation with cucurbit[7]uril.</title><author><name sortKey="Del Pozo, M" sort="Del Pozo, M" uniqKey="Del Pozo M" first="M" last="Del Pozo">M. Del Pozo</name><affiliation wicri:level="1"><nlm:affiliation>Dpto. Química Analítica y Análisis Instrumental, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Dpto. Química Analítica y Análisis Instrumental, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, Madrid</wicri:regionArea></affiliation></author><author><name sortKey="Hernandez, L" sort="Hernandez, L" uniqKey="Hernandez L" first="L" last="Hernández">L. Hernández</name></author><author><name sortKey="Quintana, C" sort="Quintana, C" uniqKey="Quintana C" first="C" last="Quintana">C. Quintana</name></author></analytic><series><title level="j">Talanta</title><idno type="eISSN">1873-3573</idno><imprint><date when="2010" type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Benzimidazoles (analysis)</term><term>Bridged Compounds (analysis)</term><term>Carbamates (analysis)</term><term>Chemistry Techniques, Analytical</term><term>Citrus sinensis (metabolism)</term><term>Food Analysis (methods)</term><term>Food Contamination</term><term>Hydrogen-Ion Concentration</term><term>Imidazoles (analysis)</term><term>Ions</term><term>Limit of Detection</term><term>Molecular Conformation</term><term>Pesticide Residues (analysis)</term><term>Pesticides (analysis)</term><term>Reproducibility of Results</term><term>Spectrometry, Fluorescence (methods)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Benzimidazoles</term><term>Bridged Compounds</term><term>Carbamates</term><term>Imidazoles</term><term>Pesticide Residues</term><term>Pesticides</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Citrus sinensis</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Food Analysis</term><term>Spectrometry, Fluorescence</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Chemistry Techniques, Analytical</term><term>Food Contamination</term><term>Hydrogen-Ion Concentration</term><term>Ions</term><term>Limit of Detection</term><term>Molecular Conformation</term><term>Reproducibility of Results</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The increase in fluorescence intensity with respect to carbendazim that occurs as a result of supramolecular-complex formation between carbendazim and cucurbit[7]uril has been studied. This host-guest interaction has been employed to develop a sensitive and selective method for benzoimidazole-type pesticide determination in fruit samples. The association constant and stoichiometry of the complex formed are reported herein, and the influence of experimental variables, such as the pH or ionic strength of the solution, on complex formation and the presence of interfering substances is also discussed. Under the optimal conditions found, the developed method allows the detection of carbendazim at a 5.0x10(-9)M level. To test the method, matrix solid phase dispersion was employed as a sample preparation method for carbendazim determination in orange samples with an RSD (%) (n=3) value of 5%. The LOD and LOQ values calculated for real samples were 0.10 and 0.52mg/kg, respectively, thus showing that the proposed method is sensitive enough to meet legal requirements.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20441936</PMID><DateCreated><Year>2010</Year><Month>5</Month><Day>5</Day></DateCreated><DateCompleted><Year>2010</Year><Month>10</Month><Day>21</Day></DateCompleted><DateRevised><Year>2013</Year><Month>5</Month><Day>28</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-3573</ISSN><JournalIssue CitedMedium="Internet"><Volume>81</Volume><Issue>4-5</Issue><PubDate><Year>2010</Year><Month>Jun</Month><Day>15</Day></PubDate></JournalIssue><Title>Talanta</Title><ISOAbbreviation>Talanta</ISOAbbreviation></Journal><ArticleTitle>A selective spectrofluorimetric method for carbendazim determination in oranges involving inclusion-complex formation with cucurbit[7]uril.</ArticleTitle><Pagination><MedlinePgn>1542-6</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.talanta.2010.02.066</ELocationID><Abstract><AbstractText>The increase in fluorescence intensity with respect to carbendazim that occurs as a result of supramolecular-complex formation between carbendazim and cucurbit[7]uril has been studied. This host-guest interaction has been employed to develop a sensitive and selective method for benzoimidazole-type pesticide determination in fruit samples. The association constant and stoichiometry of the complex formed are reported herein, and the influence of experimental variables, such as the pH or ionic strength of the solution, on complex formation and the presence of interfering substances is also discussed. Under the optimal conditions found, the developed method allows the detection of carbendazim at a 5.0x10(-9)M level. To test the method, matrix solid phase dispersion was employed as a sample preparation method for carbendazim determination in orange samples with an RSD (%) (n=3) value of 5%. The LOD and LOQ values calculated for real samples were 0.10 and 0.52mg/kg, respectively, thus showing that the proposed method is sensitive enough to meet legal requirements.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>del Pozo</LastName><ForeName>M</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Dpto. Química Analítica y Análisis Instrumental, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hernández</LastName><ForeName>L</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Quintana</LastName><ForeName>C</ForeName><Initials>C</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>Mar</Month><Day>06</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Talanta</MedlineTA><NlmUniqueID>2984816R</NlmUniqueID><ISSNLinking>0039-9140</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance 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