本文選題：礦區(qū) + 重金屬　； 參考：《生態(tài)與農(nóng)村環(huán)境學(xué)報(bào)》2016年03期

【摘要】：為評(píng)估"有色金屬之鄉(xiāng)"——南丹典型村莊常住居民蔬菜消費(fèi)中重金屬暴露風(fēng)險(xiǎn),對(duì)礦業(yè)活動(dòng)影響區(qū)大廠鎮(zhèn)、車(chē)河鎮(zhèn)和長(zhǎng)老鄉(xiāng)及對(duì)照區(qū)六寨鎮(zhèn)典型村莊蔬菜和菜地土壤重金屬含量進(jìn)行調(diào)查。通過(guò)連續(xù)3 d入戶膳食調(diào)查獲得蔬菜消費(fèi)量數(shù)據(jù),并采集37個(gè)菜地土壤樣品及166個(gè)蔬菜樣品,分析其As、Pb、Cd、Cu、Zn和Sb含量,通過(guò)污染指數(shù)法和重金屬攝入量評(píng)估暴露接觸的人體健康風(fēng)險(xiǎn)。結(jié)果表明,不同地區(qū)土壤與蔬菜中重金屬含量由高到低依次為大廠鎮(zhèn)、車(chē)河鎮(zhèn)、長(zhǎng)老鄉(xiāng)和六寨鎮(zhèn);礦業(yè)影響區(qū)蔬菜As、Pb和Cd的超標(biāo)率分別為5.60%、71.1%和32.3%,對(duì)照區(qū)蔬菜Pb和Cd的超標(biāo)率分別為57.1%和37.5%;大廠鎮(zhèn)和車(chē)河鎮(zhèn)成人經(jīng)蔬菜途徑進(jìn)入人體的As、Pb、Cd、Cu、Zn和Sb含量顯著高于六寨鎮(zhèn);4個(gè)地區(qū)蔬菜As、Pb、Cd和Sb對(duì)應(yīng)的目標(biāo)危險(xiǎn)系數(shù)均高于Cu和Zn。風(fēng)險(xiǎn)評(píng)價(jià)結(jié)果表明,大廠鎮(zhèn)和車(chē)河鎮(zhèn)蔬菜As的年健康風(fēng)險(xiǎn)分別為10.64×10-5和10.20×10-5a-1,遠(yuǎn)高于國(guó)際放射防護(hù)委員會(huì)推薦的標(biāo)準(zhǔn),表明居住在礦業(yè)密集區(qū)的居民面臨較嚴(yán)重的重金屬接觸暴露風(fēng)險(xiǎn),且顯著高于對(duì)照區(qū)。
[Abstract]:In order to assess the exposure risk of heavy metals in vegetable consumption of residents in typical villages of Nandan, "Township of Non-ferrous Metals", Dachang Town, an area affected by mining activities, The contents of heavy metals in vegetable and vegetable soil of typical villages in Chhe Town Changlaoxiang Township and control area were investigated. The data of vegetable consumption were obtained through the household dietary survey for 3 days. 37 vegetable soil samples and 166 vegetable samples were collected to analyze the contents of Cu Zn and SB. The risk of exposure to human health was assessed by pollution index and heavy metal intake. The results showed that the contents of heavy metals in soils and vegetables from high to low were Dachang Town, Chehe Town, Changlaoxiang Town and Liuzhai Town. The excess rates of Ash Pb and CD in vegetables in mining affected areas were 5.600.71% and 32.3wt%, respectively, while those of vegetables in control areas were 57.1% and 37.50.The contents of Cu Zn and SB in adults of Dachang Town and Chehe Town entering human body through vegetable route were significantly higher than those in Liuzhaizhai Town. Compared with Cu and Zn, the target risk coefficients of Pb-CD and SB in vegetables were higher than those in Cu and Zn. The results of risk assessment showed that the annual health risks of as in vegetables in Dachang Town and Chehe Town were 10.64 脳 10 ~ (-5) and 10.20 脳 10 ~ (-5) a ~ (-1) respectively, which was much higher than the standard recommended by the International Commission on Radiological Protection. The results showed that the residents living in the mining area were exposed to heavy metal exposure, which was significantly higher than that in the control area.
【作者單位】： 桂林理工大學(xué)環(huán)境科學(xué)與工程學(xué)院;桂林理工大學(xué)地球科學(xué)學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(41161056,41261082) “八桂學(xué)者”建設(shè)工程專項(xiàng)經(jīng)費(fèi) 廣西自然科學(xué)基金(2013GXNSFEA053002)
【分類號(hào)】：X53;X56

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本文編號(hào)：1850935