Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.
Int J Environ Res Public Health. 2022 Aug 3;19(15):9516. doi: 10.3390/ijerph19159516.
Phthalate esters (PAEs) are widely used as plasticizers in industrial and commercial products, and are classified as endocrine-disrupting compounds. In this study, we investigated the contamination characteristics and health risks of PAEs in the soil-plant system in coastal areas of South China. PAEs were detected in soil and plant samples at all 37 sampling sites. The total concentration of the 15 PAEs in soil samples ranged from 0.445 to 4.437 mg/kg, and the mean concentration was 1.582 ± 0.937 mg/kg. The total concentration of the 15 PAEs in plant samples ranged from 2.176 to 30.276 mg/kg, and the mean concentration was 8.712 ± 5.840 mg/kg. Di(2-Ethylhexyl) phthalate (DEHP) and di-n-butyl phthalate (DnBP) were the major PAEs compounds in all samples. The selected contaminants exhibited completely different spatial distributions within the study area. Notably, higher concentrations of PAEs were found in the coastal Guangdong Province of South China. The average noncarcinogenic risks of Σ6 PAEs were at acceptable levels via dietary and nondietary routes. However, the noncarcinogenic risks posed by DEHP and DBP at some sampling sites were relatively high. Furthermore, dietary and nondietary carcinogenic risks were very low for BBP, but carcinogenic risks posed by DEHP via diet. The results suggest that PAEs in the coastal soil-plant system in South China, through human risk assessment, will induce some adverse effects on human health, especially in children. This study provides an important basis for risk management of PAEs in agriculture, and safety in coastal areas of South China.
邻苯二甲酸酯（PAEs）广泛用作工业和商业产品中的增塑剂，被归类为内分泌干扰化合物。在这项研究中，我们调查了华南沿海地区土壤-植物系统中 PAEs 的污染特征和健康风险。在所有 37 个采样点的土壤和植物样本中均检测到 PAEs。土壤样品中 15 种 PAEs 的总浓度范围为 0.445 至 4.437 mg/kg，平均浓度为 1.582 ± 0.937 mg/kg。植物样品中 15 种 PAEs 的总浓度范围为 2.176 至 30.276 mg/kg，平均浓度为 8.712 ± 5.840 mg/kg。邻苯二甲酸二（2-乙基己基）酯（DEHP）和邻苯二甲酸二正丁酯（DnBP）是所有样品中主要的 PAEs 化合物。所选污染物在研究区域内呈现出完全不同的空间分布。值得注意的是，华南沿海的广东省发现了更高浓度的 PAEs。通过饮食和非饮食途径，Σ6 PAEs 的平均非致癌风险处于可接受水平。然而，在一些采样点，DEHP 和 DBP 的非致癌风险相对较高。此外，BBP 通过饮食途径产生的致癌风险很低，但 DEHP 通过饮食途径产生的致癌风险很低。结果表明，华南沿海土壤-植物系统中的 PAEs 通过人体风险评估，将对人类健康产生一些不利影响，尤其是对儿童。本研究为农业中 PAEs 的风险管理和华南沿海地区的安全提供了重要依据。
