title: Monitoring organochlorine pesticides from landfill leachates by gas chromatography-electron-capture detection after solid-phase microextraction.
abstract: Landfill leachates contain significant amounts of organic carbon, nitrogen and heavy metals as well as other specific trace organic compounds like organochlorine pesticides. In this study a simple and reliable methodology was improved to detect organochlorine pesticides in leachate samples by using a previous solid-phase microextraction procedure [with a 100 microm poly(dimethylsiloxane) fiber] and chromatographic analysis by GC-electron-capture detection. The extraction time, temperature, ionic strength of the solution and sampling of the headspace were the parameters studied. Reproducibility achieved values below 20% RSD, and standard addition was used for pesticides confirmation.
authors.affiliation: Department of Chemical Engineering, Faculty of Engineering, University of Porto, Portugal.
authors.forename: I
authors.initials: I
authors.lastname: Brás
authors.forename: L
authors.initials: L
authors.lastname: Santos
authors.forename: A
authors.initials: A
authors.lastname: Alves
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides / Q000032:analysis*; D009994:Osmolar Concentration; D015203:Reproducibility of Results; D013696:Temperature; D018505:Waste Management
chemical_list: D006843:Hydrocarbons, Chlorinated; D007306:Insecticides