Department of Marine Science and Convergence Engineering, College of Science and Convergence Technology, Hanyang University, Ansan 15588, Republic of Korea.
Department of Marine Science and Convergence Engineering, College of Science and Convergence Technology, Hanyang University, Ansan 15588, Republic of Korea.
Mar Pollut Bull. 2020 May;154:111119. doi: 10.1016/j.marpolbul.2020.111119. Epub 2020 Apr 2.
Due to regulations on phthalates, non-phthalate plasticizers (NPPs) are now used as an alternative. Limited studies have been conducted on the occurrence and distribution of NPPs. In this study, sediment samples were collected from 50 locations along the Korean coast to assess the occurrence, distribution, sources, and ecological risks of phthalates and NPPs. Phthalates and NPPs were detected in all sediments, indicating ubiquitous contamination of the coastal environment. Di(2-ethylhexyl)phthalate (DEHP) and di(2-ethylhexyl)terephthalate (DEHT) were dominant, suggesting that DEHT could be an emerging contaminant of concern. The highest concentrations of phthalates and NPPs were found in sediment samples from harbors, implying they are contaminated hotspots. Sedimentary organic carbon was a major factor governing the distribution of phthalates and NPPs. Significant correlations were observed among phthalates and NPPs, suggesting similar sources and geochemical behavior. DEHP concentration exceeded threshold values, indicating potential health risks to benthic organisms in sediments.
由于邻苯二甲酸酯的法规限制，现在非邻苯二甲酸酯类增塑剂（NPPs）被用作替代品。目前，关于 NPPs 的发生和分布的研究有限。在这项研究中，从韩国沿海的 50 个地点采集了沉积物样本，以评估邻苯二甲酸酯和 NPPs 的发生、分布、来源和生态风险。所有沉积物中均检测到邻苯二甲酸酯和 NPPs，表明沿海环境受到普遍污染。邻苯二甲酸二（2-乙基己基）酯（DEHP）和邻苯二甲酸二（2-乙基己基）酯（DEHT）占主导地位，这表明 DEHT 可能是一种新出现的关注污染物。在港口的沉积物样本中发现了最高浓度的邻苯二甲酸酯和 NPPs，这表明它们是污染热点。沉积有机碳是控制邻苯二甲酸酯和 NPPs 分布的主要因素。邻苯二甲酸酯和 NPPs 之间存在显著相关性，表明它们具有相似的来源和地球化学行为。DEHP 浓度超过了阈值，表明沉积物中底栖生物可能存在潜在的健康风险。
