發(fā)布時間：2018-04-06 02:06

  本文選題：電鍍廠　切入點：地表水　出處：《環(huán)境科學(xué)》2017年03期

【摘要】：選取東莞市麻涌鎮(zhèn)、沙田鎮(zhèn)、虎門鎮(zhèn)、長安鎮(zhèn)和大嶺山鎮(zhèn)為研究區(qū)域,對區(qū)域電鍍廠周邊30個地表水樣中8種重金屬(包括Cd、Cr、Cu、Ni、Pb、Zn和類重金屬As、Hg)進(jìn)行測定,運(yùn)用多元統(tǒng)計分析法和人體健康風(fēng)險評價模型研究地表水中重金屬分布特征和健康風(fēng)險.結(jié)果表明,地表水中Cr、Pb最大濃度和Hg平均濃度超過《地表水環(huán)境質(zhì)量》(GB 3838-2002)Ⅲ類水質(zhì)標(biāo)準(zhǔn),Cr、Cu、Hg、Ni、Zn和Pb含量均呈現(xiàn)出雨季高于旱季.多元統(tǒng)計分析表明,Cd、Cr、Cu、Ni和Zn主要來源于周邊電鍍企業(yè)污染,Pb和Hg受交通污染源影響較大,As與自然源有密切關(guān)系.地表水體健康風(fēng)險評價結(jié)果表明,重金屬污染對兒童威脅大,經(jīng)飲水途徑暴露的健康風(fēng)險比皮膚接觸途徑大2~3個數(shù)量級.此外,Cr和As致癌風(fēng)險高于最大可接受風(fēng)險水平(5.0×10-5a-1);非致癌性重金屬健康風(fēng)險大小呈現(xiàn)出PbNiCuHgZn,風(fēng)險水平在10-10~10-7a-1,低于最大可接受風(fēng)險水平2~5個數(shù)量級.
[Abstract]:In this paper, eight heavy metals (including CDDX, CU, NiNiPbPbPbPbPbGZn and As-Hg) in 30 surface water samples around the electroplating plant in Dongguan City were selected as the study area, including Magong Town, Shatian Town, Humen Town, Changan Town and Dalingshan Town as the study area, and the results showed that the heavy metals in the 30 surface water samples around the electroplating plant were determined.The distribution characteristics and health risk of heavy metals in surface water were studied by multivariate statistical analysis and human health risk assessment model.The results show that the maximum concentration of Cr ~ (2 +) Pb and the average concentration of Hg in surface water are higher than those in "environmental quality of surface water" (GB3838-2002)) the contents of Zn and Pb in class 鈪，

本文編號：1717476