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Article: Piezoelectric quartz crystal sensor for rapid analysis of pirimicarb residues using molecularly imprinted polymers as recognition elements

TitlePiezoelectric quartz crystal sensor for rapid analysis of pirimicarb residues using molecularly imprinted polymers as recognition elements
Authors
KeywordsChemical sensor
Molecularly imprinted polymers
Pesticide residues
Piezoelectric quartz crystal
Pirimicarb
Precipitation polymerization
Issue Date2006
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/aca
Citation
Analytica Chimica Acta, 2006, v. 576 n. 1, p. 67-76 How to Cite?
AbstractA new piezoelectric quartz crystal (PQC) sensor using molecularly imprinted polymer (MIP) as sensing material has been developed for fast and onsite determination of pirimicarb in contaminated vegetables. Three MIPs particles have been prepared by conventional bulk polymerization (MIP-B) and precipitation polymerization in either acetonitrile (MIP-P1) or chloroform (MIP-P2). MIP-P2, with uniform spherical shape and mean diameter at about 50 nm, has shown the best performance as the sensing material for PQC sensor. The sensor fabricated with MIP-P2 can achieve a steady-state response within 5 min, a very short response time as compared to MIPs-coated PQC sensor reported in the literature. The sensor developed exhibits good selectivity (low response to those pesticides with similar structures to pirimicarb, such as atrazine, carbaryl, carbofuran and aldicarb) and high sensitivity to pirimicarb with a linear working range from 5.0 × 10-6 to 4.7 × 10-3 mol L-1 (following a regression equation (r = 0.9988) of -ΔF = 0.552 + 1.79 × 106 C), a repeatability (R.S.D., n = 5) of 4.3% and a detection limit (S/N = 3, n = 5) of 5 × 10-7 mol L-1. The MIP-coated PQC sensor developed is shown to provide a sensitive and fast method for onsite determination of pirimicarb in aqueous extract from contaminated vegetables with satisfactory recoveries from 96 to 103% and repeatability (R.S.D., n = 5) from 4.6 to 7.1% at pirimicarb concentrations ranging from 8.0 × 10-6 to 2.0 × 10-4 mol L-1. © 2006 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/54258
ISSN
2015 Impact Factor: 4.712
2015 SCImago Journal Rankings: 1.548
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Hen_HK
dc.contributor.authorFung, Yen_HK
dc.date.accessioned2009-04-03T07:41:21Z-
dc.date.available2009-04-03T07:41:21Z-
dc.date.issued2006en_HK
dc.identifier.citationAnalytica Chimica Acta, 2006, v. 576 n. 1, p. 67-76en_HK
dc.identifier.issn0003-2670en_HK
dc.identifier.urihttp://hdl.handle.net/10722/54258-
dc.description.abstractA new piezoelectric quartz crystal (PQC) sensor using molecularly imprinted polymer (MIP) as sensing material has been developed for fast and onsite determination of pirimicarb in contaminated vegetables. Three MIPs particles have been prepared by conventional bulk polymerization (MIP-B) and precipitation polymerization in either acetonitrile (MIP-P1) or chloroform (MIP-P2). MIP-P2, with uniform spherical shape and mean diameter at about 50 nm, has shown the best performance as the sensing material for PQC sensor. The sensor fabricated with MIP-P2 can achieve a steady-state response within 5 min, a very short response time as compared to MIPs-coated PQC sensor reported in the literature. The sensor developed exhibits good selectivity (low response to those pesticides with similar structures to pirimicarb, such as atrazine, carbaryl, carbofuran and aldicarb) and high sensitivity to pirimicarb with a linear working range from 5.0 × 10-6 to 4.7 × 10-3 mol L-1 (following a regression equation (r = 0.9988) of -ΔF = 0.552 + 1.79 × 106 C), a repeatability (R.S.D., n = 5) of 4.3% and a detection limit (S/N = 3, n = 5) of 5 × 10-7 mol L-1. The MIP-coated PQC sensor developed is shown to provide a sensitive and fast method for onsite determination of pirimicarb in aqueous extract from contaminated vegetables with satisfactory recoveries from 96 to 103% and repeatability (R.S.D., n = 5) from 4.6 to 7.1% at pirimicarb concentrations ranging from 8.0 × 10-6 to 2.0 × 10-4 mol L-1. © 2006 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/acaen_HK
dc.relation.ispartofAnalytica Chimica Actaen_HK
dc.rightsAnalytica Chimica Acta. Copyright © Elsevier BV.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectChemical sensoren_HK
dc.subjectMolecularly imprinted polymersen_HK
dc.subjectPesticide residuesen_HK
dc.subjectPiezoelectric quartz crystalen_HK
dc.subjectPirimicarben_HK
dc.subjectPrecipitation polymerizationen_HK
dc.titlePiezoelectric quartz crystal sensor for rapid analysis of pirimicarb residues using molecularly imprinted polymers as recognition elementsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-2670&volume=576&issue=1&spage=67&epage=76&date=2006&atitle=Piezoelectric+quartz+crystal+sensor+for+rapid+analysis+of+pirimicarb+residues+using+molecularly+imprinted+polymers+as+recognition+elements+en_HK
dc.identifier.emailSun, H:sunhui@hku.hken_HK
dc.identifier.emailFung, Y:ysfung@hku.hken_HK
dc.identifier.authoritySun, H=rp00778en_HK
dc.identifier.authorityFung, Y=rp00697en_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1016/j.aca.2006.04.058en_HK
dc.identifier.pmid17723616en_HK
dc.identifier.scopuseid_2-s2.0-33746890223en_HK
dc.identifier.hkuros119237-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746890223&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume576en_HK
dc.identifier.issue1en_HK
dc.identifier.spage67en_HK
dc.identifier.epage76en_HK
dc.identifier.isiWOS:000240175900012-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridSun, H=37032038600en_HK
dc.identifier.scopusauthoridFung, Y=13309754700en_HK

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