Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/35063
DC FieldValueLanguage
dc.contributor.authorLi, H.P.en_US
dc.contributor.author鄭政峰zh_TW
dc.contributor.authorLi, G.C.en_US
dc.contributor.authorJen, J.F.en_US
dc.date2003zh_TW
dc.date.accessioned2014-06-06T07:48:43Z-
dc.date.available2014-06-06T07:48:43Z-
dc.identifier.issn0021-9673zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/35063-
dc.description.abstractA coupled technique, microwave-assisted headspace solid-phase microextraction (MA-HS-SPME), was investigated for one-step in situ sample pretreatment for organochlorine pesticides (OCPs) prior to gas chromatographic determination. The OCPs, aldrin, o,p'-DDE, p,p'-DDE, o,p'-DDT, p,p'-DDT, dieldrin, alpha-endosulfan, beta-endosulfan, endosulfan sulfate, endrin, delta-HCH, gamma-HCH, heptachlor, heptachlor epoxide, methoxychlor and trifluralin were collected by the proposed method and analyzed by gas chromatography with electron-capture detection (GC-ECD). To perform the MA-HS-SPME, six types of SPME fibers were examined and compared. The parameters affecting the efficiency in MA-HS-SPME process such as sampling time and temperature, microwave irradiation power, desorption temperature and time were studied to obtain the optimal conditions. The method was developed using spiked water samples such as field water and with 0.05% humic acid in a concentration range of 0.05-2.5 mug/l except endosulfan sulfate in 0.25-2.5 mug/l. The detection was linear over the studied concentration range with r(2) > 0.9978. The detection limits varied from 0.002 to 0.070 mug/l based on S/N=3 and the relative standard deviations for repeatability were < 15%. A certified reference sample of OCPs in aqueous solution was analyzed by the proposed method and compared with the conventional liquid-liquid extraction procedure. These results are in good agreement. The results indicate that the proposed method provides a very simple, fast, and solvent-free procedure to achieve sample pretreatment prior to the trace-level screening determination of organochloride pesticides by gas chromatography. (C) 2003 Published by Elsevier B.V.en_US
dc.language.isoen_USzh_TW
dc.relationJournal of Chromatography Aen_US
dc.relation.ispartofseriesJournal of Chromatography A, Volume 1012, Issue 2, Page(s) 129-137.en_US
dc.relation.urihttp://dx.doi.org/10.1016/s0021-9673(03)00916-6en_US
dc.subjectsolid-phase microextractionen_US
dc.subjectmicrowave assisted extractionen_US
dc.subjectheadspaceen_US
dc.subjectanalysisen_US
dc.subjectextraction methodsen_US
dc.subjectwater analysisen_US
dc.subjectorganochlorine compoundsen_US
dc.subjectpesticidesen_US
dc.subjectelectron-capture detectionen_US
dc.subjectmass-spectrometryen_US
dc.subjectorganic micropollutantsen_US
dc.subjectenvironmental wateren_US
dc.subjectextractionen_US
dc.subjectsamplesen_US
dc.subjectproductsen_US
dc.subjectdistillationen_US
dc.subjectherbicidesen_US
dc.subjectdesorptionen_US
dc.titleDetermination of organochlorine pesticides in water using microwave assisted headspace solid-phase microextraction and gas chromatographyen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/s0021-9673(03)00916-6zh_TW
item.languageiso639-1en_US-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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