School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China; Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, 999077, Hong Kong.
Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, 999077, Hong Kong.
Ecotoxicol Environ Saf. 2020 Jul 15;198:110651. doi: 10.1016/j.ecoenv.2020.110651. Epub 2020 Apr 30.
Disposal of e-waste is a global issue and has caused serious pollution in recycling areas. Most of these areas had once developed intensive agriculture and might incur organochlorine pesticides (OCPs) pollution. However, this used to be neglected. Here we discuss the joint effects via analyzing OCPs and heavy metals in a notorious e-waste recycling area. The OCPs showed higher (p = 0.005) pollution levels in soils from agricultural zone than in core e-waste recycling zone, which is opposite for heavy metals (p = 0.02). The OCPs and heavy metals showed the highest concentrations in the open burning site locating in the boundary between the e-waste and agricultural zones. Composition profiles further indicated that the land use changes from agriculture to e-waste industry might accelerate the release of buried OCPs. Worse still, the OCPs and heavy metals might pose carcinogenic and non-carcinogenic risks to local residents, respectively.
电子废物的处理是一个全球性问题，已在回收区造成严重污染。这些地区大多曾经发展过集约型农业，可能会引发有机氯农药 (OCPs) 污染。然而，这一点过去一直被忽视。在这里，我们通过分析一个臭名昭著的电子废物回收区的 OCPs 和重金属，讨论了它们的联合效应。OCPs 在农业区土壤中的污染水平（p = 0.005）高于核心电子废物回收区，而重金属则相反（p = 0.02）。OCPs 和重金属在位于电子废物和农业区边界的露天焚烧点的浓度最高。成分分布进一步表明，从农业到电子废物行业的土地利用变化可能会加速掩埋 OCPs 的释放。更糟糕的是，OCPs 和重金属可能分别对当地居民构成致癌和非致癌风险。
