南寧市部分常見野生蔬菜的衛(wèi)生評價.pdf

1、廣西大學碩士學位論文南寧市部分常見野生蔬菜的衛(wèi)生評價姓名：凌啟昌申請學位級別：碩士專業(yè)：蔬菜學指導教師：龍明華20070628E、後IJJ加ONoFsANIT篷rIoNoFSoMEA、7AILABLEWILDVEGETABLESINNANNINGCITYInthisthesisthepresentsituationofnitrateandheavymetal(Cu、Zn、Cd、Pb)pollutionof10availablewildv

2、egetablesinNanningcitywasinvestigatedandevaluatedTheresultswereshowedasfollows：1Noneofthese10availablewildvegetablesinNanningcitywaspollutedbynitrate，Allthepollutionindexofthembelow03，Itindicatesthatnitratecontentsofthes

3、e10availablewildvegetablesinNanningcitysuburbscorrespondwithediblesanitationstandard2NoneofundomesticatedwildvegetablesinNanningcityexceedsthestandardofCu、Zn、PbandCdWhilesomeofdomesticatedwildvegetableswerepollutedbyPban

4、dCdPbpollutionwasthemostserious，followingbyCd，butthewildvegetablewerenotpollutedbyCuZnPbexceedingtookplaceineachwildvegetable，andtherateofexceedingstandardofPbinCormmortPerillaandChinaWolfberrybothreachedto6667％，whichwas

5、highestamongthosewildvegetablesTherateofexceedingstandardofCdinChinaWolfberryreachedto6667％whichwashi【ghestamongthosewildvegetablesAccordingtothesyntheticpollutionindexofwildvegetables，thehighestwasChinaWolfberryreachto0

6、933TheaveragecontentsofCu、Zn、Cd、PbinNanningcitysuburbs’wildvegetablegardensoilwerehigherthanthebackgroundvaluesofNanningcitysoilThedomesticatedwildvegetablegardensoilhavenotbeenpollutedbyCu、Zn、PbexceptCdCdpollutionwasrat

7、hercritical，andrateofexceedingstandardofCdwas1545％ThesyntheticpollutionindexofCdinsoilwasthehighestreachto127(Lightdegreepollution)Thesyntheticpollutionindexorderofheavymetalsamonginvestigatedsoilasfollows：CdZnCuPb4Cdabs