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《湘西花垣礦區(qū)蔬菜重金屬污染現(xiàn)狀及健康風險評價》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、萬方數(shù)據(jù)農(nóng)業(yè)環(huán)境科學學報2012，31(1)：17—23JournalofAgro—EnvironmentScience湘西花垣礦區(qū)蔬菜重金屬污染現(xiàn)狀及健康風險評價楊勝香，易浪波，劉佳，王輝，索悠揚(吉首大學生物資源與環(huán)境學院，湖南吉首416000)摘要：對湘西花垣錳礦、鉛鋅礦區(qū)的部分蔬菜及其種植土壤進行了調(diào)查和重金屬含量分析，通過污染指數(shù)法和經(jīng)蔬菜途徑重金屬暴露接觸對人體的健康風險進行了系統(tǒng)評價。結(jié)果表明，與非礦區(qū)比較，兩礦區(qū)蔬菜、土壤Pb、zn和cd含量較高，礦區(qū)土壤Pb、Zn、Cd含量均超過GB15618--1995(-I-壤環(huán)
2、境質(zhì)量標準》二級標準(pH<6．5)的污染警戒值；礦區(qū)蔬菜Pb、zn和Cd含量均超過國家蔬菜重金屬元素限量標準，分別為限量標準的2．0～10．75、0．9—2．5倍和2．2一19．8倍；兩礦區(qū)蔬菜受到了Pb、cd的嚴重污染，zn的輕一中度污染。重金屬暴露接觸對人體的風險評估結(jié)果表明，兩礦區(qū)居民通過蔬菜途徑攝入的Pb和cd對其健康存在較大的潛在風險，且對兒童的健康風險高于成年人。因此，礦區(qū)土壤上種植蔬菜會對食用這些蔬菜的當?shù)鼐用癞a(chǎn)生一定的健康風險，應采取合適的治理措施進行礦區(qū)污染土壤的修復。關(guān)鍵詞：錳礦；鉛鋅礦；重金屬；土壤；蔬菜；健康
3、風險；湘西中圖分類號：X820．4文獻標志碼：A文章編號：1672—2043(2012)01-0017--07HeavyMetalsConcentrationsandHealthRiskinVegetablesGrownonMnandPb，ZnMinelandinHuayuanCounty，WestHunanProvince,ChinaYANGSheng-xiang，YILang-bo，LIUJia,WANGHui，SUOYou-yang(CoHegeofBiologyandEnvironmentalScience，JishouUni
4、versity，Jishou416000，China)Abstract：AsystematicsurveyanddeterminationofMn，Pb，Zn，CuandCdconcentrationsinvegetablesandthecorrespondingsoilswerecon-ductedinMnandPb／ZnminesinHuayuancounty，westHunan．ThepossiblehealthrisktolocalinhabitantsviaconsumptionofvegetablesWaSassessed
5、basedontargethazardquotients(THQ)andpollutionindex．TheresultsshowedthatPb，ZnandCdconcentrationsinvegetablesandsoilsfromMnandPb／Znminelandswerehigherthanthosefromnon-mineland．Pb，ZnandCdconcentrationsintheminesoilsexceededthethresholdlevelsofChinaEnvironmentalQualityStand
6、ardforSoils(GB15618---1995ClassII)．Pb，ZnandCdlevelofthevegetablesgrownonminelandswere2．0-10．7times，0．9-2．5timesand2．2-19．8timesashigh鵝thecorrespondingvaluesforsafefood(GB14935--1994。GB131(16---1991andGB15201--1994)respectively．VegetablesgrownontheMnandPb／Znminelandswere
7、heavilypollutedbyPbandCdandslighflyormoderatelypollutedbyZn．THQofPbandCdinvegetablesforbothadultsandchildrenweregreaterthanlindicatingthatthelocalinhabitantsexperienceahiighpotentialhealthrisksbyintakeofPborCdviaconsumptionofthesevegetables．especiallyforchildren．Therefo
8、re．someprecautionmeasuresshouldbetakentorestorethecontaminatedminelandsbeforetheya∞r(nóng)ecommendedforgrowingvegeta
