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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(fēng)險(xiǎn)評(píng)價(jià)》由會(huì)員上傳分享，免費(fèi)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(xué)學(xué)報(bào)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(fēng)險(xiǎn)評(píng)價(jià)楊勝香，易浪波，劉佳，王輝，索悠揚(yáng)(吉首大學(xué)生物資源與環(huán)境學(xué)院，湖南吉首416000)摘要：對(duì)湘西花垣錳礦、鉛鋅礦區(qū)的部分蔬菜及其種植土壤進(jìn)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(duì)人體的健康風(fēng)險(xiǎn)進(jìn)行了系統(tǒng)評(píng)價(jià)。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(biāo)準(zhǔn)》二級(jí)標(biāo)準(zhǔn)(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(biāo)準(zhǔn)，分別為限量標(biāo)準(zhǔn)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(yán)重污染，zn的輕一中度污染。重金屬暴露接觸對(duì)人體的風(fēng)險(xiǎn)評(píng)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(duì)其健康存在較大的潛在風(fēng)險(xiǎn)，且對(duì)兒童的健康風(fēng)險(xiǎn)高于成年人。因此，礦區(qū)土壤上種植蔬菜會(huì)對(duì)食用這些蔬菜的當(dāng)?shù)鼐用癞a(chǎn)生一定的健康風(fēng)險(xiǎn)，應(yīng)采取合適的治理措施進(jìn)行礦區(qū)污染土壤的修復(fù)。關(guān)鍵詞：錳礦；鉛鋅礦；重金屬；土壤；蔬菜；健康
3、風(fēng)險(xiǎn)；湘西中圖分類號(hào)：X820．4文獻(xiàn)標(biāo)志碼：A文章編號(hào)：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
