北京市食用菌重金屬含量調(diào)查與風(fēng)險(xiǎn)評(píng)價(jià).pdf

1、中國農(nóng)業(yè)大學(xué)碩士學(xué)位論文北京市食用菌重金屬含量調(diào)查與風(fēng)險(xiǎn)評(píng)價(jià)姓名：賈彥申請學(xué)位級(jí)別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：李花粉江榮風(fēng)20070601AbstractAmarketsurveyw夠carriedoutwiththeaimtoasses8thelevelsofcadmium(c母，arsenic(As)，nlelCUl了mg)，lead口b)，zinc(2rm)andiron0Fc)inV／uJoIIsediblefungicoll

2、ectedfromcirculationleallnofBeijhagInadditioncultivationsubslrateandfungisamplesofPleurotusostreatusandlentnusedodesw啪simultaneouslycollectedfromtheproductionbaseofBeijingtoestablishtheirrelationshipinconcentrationsofhea

3、vyHIetaIsFurthermorewealsoconductedasubstratecultivatingexperimenttostudytheeffectofCdandZnOnthegrowthofFlammulinavelutipesandtheirinteractionResultswereshown∞follows：111eaverageeoneetltrationsdetectedwelerangedfrom002to

4、017，O02to006，O001to002，018toO30，1096to4373and489to915mgkg“‘inthefreshediblefungiforCd’As，Hg，Pb，F(xiàn)eandZnrespectivelyThehighestmeanlevelsofCd，As，HgPb，F(xiàn)eand盈WeredetectedinLentinusedodes，AuriculariaauricularAgaricⅪbisporus，Le

5、ntinusedodes(andFlammulinavelutipes)，AuriculariaauricularandLen砌“sedodesrespectivelyConcentrationsofCdPbandZninsomlPleurotusostreatusandlentnusedodessamplesexceeded吐堆standardwimtllerateofoverstandardof275％125％，25％and75％，

6、25％，25％respectivelyInaddition4％oftheFlammulinavelu矗pessamplesexceededthestandardinCdconcentrationInthedryediblefungi，theaverageconcentrationsdetectedforCd，As，Hg，Pb，F(xiàn)eandZnWererangedfrom015to117，O15to063，O02toO06，059to2Ol

7、，1026to7891and331to1058mgkglrespectivelyThehighestmeanlevelsofcd，As，HgPb，F(xiàn)eandZnwereobservedinLentinusedodesLentinusedodes，Auriculariaauricular(andPholiotanamek)，Armillariamellea，ArmillariamelleaandLentinusedodesrespecti

8、velyCdcoJaeentratiotiof501111eLentinusedodesandArmillariamelleaexceededthestandardwiththerateofoverstandardof425％and40“／respectivelyPbconcentrationofs咖eLentinusedodes，Agrocybechaxinggu，PholiotanamekandArmillariamelleaexc

9、eededthestandardwiththerlltl，ofoverstandardof30％，20％。20％and60％respectivelyAsconcentrationof80111eLent／nusedodes，ArmillariamelleaandPholiotanamekoexceededthestandardwiththerateofoverstandardof125％67％and10％respectively25％o

10、ftheAuriculariaauricularsamplesexceededthestandardinHgconcentrationGenerallylllcanlevelsofheavymetaldetectedinthesamplesofthefleshanddryediblefungiweleallbelowthenationaistandardwiththeorderofPbCdAsHg11wexeeedenceoflentn

11、usedodesw∞nlol℃seriousthananyotherfreshediblefungiandthosewereArmillariamelleaandlentnusedodesinthedryediblefungiPbandCdWelethemainpollutionfactorsHealthriskofheavymetalsfromtheediblefungiorbeijhagwelelowContcntsofheavyl

12、nctalsinbothfruitbodyandcultivationsubslrateofPleumtusostreatu$collectedfromFangshanandTongzhouDistrictwerelowerthanthoseof／entnusedodes，andvariedwiththecompositionofcultivationsubstrateBytheregressionequations，thecalcul