模拟生物采样装置的应用

StudyonSPMDapplicationinsamplinggroundwater FeiLIUDept ofWaterResources EnvironmentChinaUniversityofGeosciences Beijing feiliu MainContents chlorinatedpesticides 1 Background2 Analyticalmethod3 Simulatedexperimentconductedinlab4 Fieldapplication Background 2001 5 23POPstreatysignedinStockholmincludesChina POPs pesticides aldrein chlorodane DDT dieldrin endrin heptachlor Dechloranemirex Toxaphene HCB Industrialchemicals HCB PCBs Byproducts PCDD PCDF HCB PCBs ImpactsonEnvironment AtmosphereWaterbodysoil Problemscausedbypesticides KillthebeneficialbirdsandinsectswhilekillthepestsAccumulationinanimalbyfoodchainMakethepestshavetoleranceability PescidesusedinChina ResidueofBHCandDDTinfood 10 3mg kg WhydowechoosetheSPMD LowerconcentrationingroundwaterPesticidescanbeaccumulatedbyaquaticlifeWecareabouttheinformationnotonatimepoint StructureandpotentialofSPMD Twolayersoflowdensitypolythene Trioleininside CaculationconcentrationofpollutantinSPMD 1 BHC 2HCB 3 BHC 4 BHC 5 BHC 6heptachlor 7aldrin 8heptachlorepoxide 9p p DDE 10dieldrin 11endrin 12p p DDD 13o p DDT 14p p DDT Initail80 rate130 minto185 rate23 minto215 rate31 minto225 keep2min Precision 4ppbmoreorless Detectionlimits g L Simulatedexperiment CSPMDintapwater CSPMDintapwater CSPMDindistilledwater Equilibriumtime Uptakerate Researcharea SectionofLiangshuiRiver Results ng L Summary 1 SPMDsimulatesliveaquaticlifeandcanbeusedinmonitoringofgrounwater 2 Uptakerates BHC0 061mL h hexachlorobenzene0 071mL h BHC0 098mL h BHC0 066mL h BHC0 033mL h heptachloro0 014mL h aldrin0 007mL h heptachloroepoxide0 062mL h p p DDE0 108mL h dieldrin0 052mL h endrin0 029mL h p p DDD0 032mL h o p DDT0 061mL h p p DDT0 038mL h 3 NotonlySPMDmakethesamplingandpretreatmen