International Joint Research Center for Persistent Toxic Substances, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, Zhejiang University of Technology, Hangzhou, 310014, China.
Environ Sci Pollut Res Int. 2019 Apr;26(11):11224-11233. doi: 10.1007/s11356-019-04571-x. Epub 2019 Feb 22.
In attempts to evaluate the environmental risk produced by plastic markets, the levels and congener profiles of phthalate esters (PAEs) in soil, vegetable, and sediment samples collected from the plastic market in China, where numerous plastic products are exchanged every year, were investigated. The concentrations of ∑PAEs ranged from 2131 to 27,805 ng g in agricultural soils, from 8023 to 37,556 ng g in vegetables and from 9031 to 87,329 ng g in sediments. The predominant PAE pollutants were di-(2-ethylhexyl) phthalate (DEHP), di-n-butyl phthalate (DnBP), di-isobutyl phthalate (DiBP), and dibenzyl phthalate (DBzP). The mean percentages of the predominant PAEs in the soil, vegetable, and sediment samples accounted for 98.4%, 97.3%, and 99.5% of the total PAEs, respectively. The concentrations of PAEs at the sites around the plastic market were significantly higher than those at other pollution sites, such as sites contaminated by agricultural plastic film, electronic waste (e-waste) recycling sites, and industrial parks, indicating that the plastic market was an important pollution source. The DEHP concentrations in the soils, vegetables, and sediments and the DnBP concentrations in the vegetables all exceeded the environmental risk levels (ERL) or the environmental allowable levels (EAL), indicating that the plastic market posed potential environmental risks.
为评估塑料市场产生的环境风险，对中国某塑料市场的土壤、蔬菜和沉积物样本中邻苯二甲酸酯（PAEs）的水平和同系物分布进行了调查。每年都有大量塑料产品在此交易。农业土壤中∑PAEs 的浓度范围为 2131 至 27805ng/g，蔬菜中为 8023 至 37556ng/g，沉积物中为 9031 至 87329ng/g。主要的 PAE 污染物为邻苯二甲酸二（2-乙基己基）酯（DEHP）、邻苯二甲酸二正丁酯（DnBP）、邻苯二甲酸二异丁酯（DiBP）和邻苯二甲酸二苄酯（DBzP）。主要 PAEs 在土壤、蔬菜和沉积物样本中的平均百分比分别占总 PAEs 的 98.4%、97.3%和 99.5%。塑料市场周边地区的 PAEs 浓度明显高于其他污染地区，如受农用塑料薄膜污染、电子废物（e-waste）回收地和工业园区等地区，表明塑料市场是一个重要的污染源。土壤、蔬菜和沉积物中的 DEHP 浓度以及蔬菜中的 DnBP 浓度均超过了环境风险水平（ERL）或环境允许水平（EAL），表明塑料市场存在潜在的环境风险。
