<br>南海西部苯并噻唑类、苯并三唑类和苯并三唑类紫外线吸收剂（BUVs）的综合分析：空间分布、迁移趋势和生态毒理学意义,Water Research

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南海西部苯并噻唑类、苯并三唑类和苯并三唑类紫外线吸收剂（BUVs）的综合分析：空间分布、迁移趋势和生态毒理学意义
Water Research ( IF 11.4 ) Pub Date : 2024-09-02 , DOI: 10.1016/j.watres.2024.122372
Ming-Liang Zhao ₁ , Jie Fu ₁ , Xuan Ji ₁ , Jing Zhang ₂ , Zhen He ₃ , Gui-Peng Yang ₂

Affiliation

苯并噻唑（BTH）、苯并三唑（BTR）和苯并三唑紫外线吸收剂（BUV）因其在环境中的持久性和对水生生物的不利影响而受到广泛关注。然而，在热带海洋环境中进行的调查和研究仍然缺乏。在这项研究中，我们进行了南海西部（WSCS）海水和沉积物中 BTH 、 BTR 和 BUV 的首次分布调查和生态毒理学相关性。海水中 BTH 、 BTR 和 BUV 浓度升高以及悬浮颗粒物（SPM）主要在珠江口（PRE）和 WSCS 西部地区观察到，这归因于陆地径流和水动力过程。此外，这些化合物在海水-SPM 界面上的传输受污染物的内在性质和温度变化的影响。在空间上，随着海岸到近海地区距离的增加，表层沉积物中 BTHs 、 BTRs 和 BUV 的浓度呈递减趋势，反映了显着的人为影响。这些化合物在沉积物岩芯中的浓度分布呈自下而上增加的趋势，其中总有机碳（TOC）被确定为控制它们在 WSCS 沉积物岩心中积累的主要决定因素。陆地径流输入和大气沉降是 WSCS 中 BTH 、 BTR 和 BUV 出现的主要贡献者。同时，该研究强调了与沉积物中的 BTH、BTR 和 BUV 相关的不可忽视的中等混合物风险商。

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Comprehensive analysis of benzothiazoles (BTHs), benzotriazoles (BTRs), and benzotriazole ultraviolet absorbers (BUVs) in the western South China Sea: Spatial distributions, migration tendencies and ecotoxicological relevance

Benzothiazoles (BTHs), benzotriazoles (BTRs), and benzotriazole ultraviolet absorbers (BUVs) have garnered significant attention owing to their persistent nature in the environment and adverse impacts on aquatic organisms. However, there remains a dearth of investigations and studies conducted in tropical marine environments. In this study, we undertook the inaugural distributional survey and ecotoxicological relevance of BTHs, BTRs, and BUVs in seawater and sediments of the western South China Sea (WSCS). Elevated concentrations of BTHs, BTRs, and BUVs in the seawater and suspended particulate matter (SPM) were primarily observed in the Pearl River Estuary (PRE) and the western region of the WSCS, attributed to terrestrial runoff and hydrodynamic processes. Moreover, the transport of these compounds at the seawater–SPM interface was influenced by both the intrinsic properties of the contaminants and temperature variations. Spatially, concentrations of BTHs, BTRs, and BUVs in surface sediments exhibited a diminishing trend with increasing distance from the coast to offshore areas, reflecting notable anthropogenic impacts. Concentration profiles of these compounds in sediment cores displayed a bottom-up increasing trend, with total organic carbon (TOC) identified as the primary determinant governing their accumulation within sediment cores in the WSCS. Terrestrial runoff inputs and atmospheric deposition as major contributors to the occurrence of BTHs, BTRs, and BUVs in the WSCS. Simultaneously, the study underscores the non-negligible moderate mixture risk quotient associated with BTHs, BTRs, and BUVs in the sediments.

更新日期：2024-09-02

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