Xu Lei, Dai Huiping, Skuza Lidia, Xu Jianming, Shi Jiachun, Wang Yujun, Shentu Jiali, Wei Shuhe
Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100039, China.
College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-resources, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C, State Key Laboratory of biological resources and ecological environment jointly built by Qinba province and Ministry, Shaanxi University of Technology, Hanzhong 723001, China.
Ecotoxicol Environ Saf. 2022 May 1;236:113462. doi: 10.1016/j.ecoenv.2022.113462. Epub 2022 Apr 6.
The Jiangzhe Area was relatively common area that rely on industrial process for rapid development with serious heavy metals contamination. This study investigated the spatial, vertical and speciation distribution, correlation of heavy metals, as well as assessed pollution and health risks in three representative contamination industries at Jingjiang (electroplating site), Taizhou (e-waste recycling site) and Wenzhou (leather production site) in the Jiangzhe Area. The results indicated that the Cr(VI) pollution was serious in all three sites and there was a tendency to gradually decrease with depth. As for other heavy metals, not only the total concentration, but also the addition of acid soluble and reducible speciation generally decreased with soil depth at Jingjiang and Taizhou sites. Significantly positive correlations supported by correlation analysis were detected between the following elements: Cu-Ni (p < 0.01), Cr(VI)-Ni (p < 0.05) and Cr(VI)-Cu (p < 0.05) at Jingjiang site, Cu-Ni (p < 0.01), Cu-Cd (p < 0.01) and Ni-Cd (p < 0.05) at Taizhou site indicating possibly the same sources and pathways of origin, while the significantly negative correlation of Cd-Ni (p < 0.05) at Wenzhou site meaning the different sources. As regards the pollution assessment of topsoil, the mean PI value indicated that Cr(VI) contaminated severe in all three sites. In general, Jingjiang site was severe pollution (4.06), while Taizhou and Wenzhou (2.27 and 2.66) were moderate pollution, as NIPI value shown. In terms of health risk assessment that received much attention, non-carcinogenic risks caused by Pb contamination were significant for children at Jingjiang and Taizhou sites, with the HI values of 3.42E+ 00 and 2.03E+ 00, respectively. Ni caused unacceptable carcinogenic risk for both adults and children at all three sites. The present study can help to better understand the contamination characteristics of heavy metals in the commonly developed industrial area, and thus to control the environmental quality, so as to truly achieve the goal of "Green Deal objectives ".
江浙地区是依靠工业进程快速发展且重金属污染严重的相对常见区域。本研究调查了江浙地区靖江（电镀场地）、泰州（电子垃圾回收场地）和温州（皮革生产场地）三个具有代表性污染行业中重金属的空间、垂直和形态分布、相关性，以及评估了污染和健康风险。结果表明，三个场地的Cr(VI)污染均很严重，且有随深度逐渐降低的趋势。对于其他重金属，靖江和泰州场地不仅总浓度，而且酸溶态和可还原态的含量一般也随土壤深度降低。相关性分析显示，靖江场地的Cu-Ni（p < 0.01）、Cr(VI)-Ni（p < 0.05）和Cr(VI)-Cu（p < 0.05）之间，泰州场地的Cu-Ni（p < 0.01）、Cu-Cd（p < 0.01）和Ni-Cd（p < 0.05）之间存在显著正相关，表明可能具有相同的来源和途径，而温州场地Cd-Ni的显著负相关（p < 0.05）意味着来源不同。关于表层土壤的污染评估，平均PI值表明三个场地的Cr(VI)均受到严重污染。总体而言，如NIPI值所示，靖江场地为重度污染（4.06），而泰州和温州场地为中度污染（2.27和2.66）。在备受关注的健康风险评估方面，靖江和泰州场地铅污染对儿童造成的非致癌风险显著，HI值分别为3.42E + 00和2.03E + 00。镍在所有三个场地对成人和儿童均造成不可接受的致癌风险。本研究有助于更好地了解工业发达常见区域重金属的污染特征，从而控制环境质量，真正实现“绿色新政目标”。
