<br>南海北部鲸类中遗留和新出现的有机磷酸酯的生物累积和潜在内分泌干扰风险,Environmental Science & Technology

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南海北部鲸类中遗留和新出现的有机磷酸酯的生物累积和潜在内分泌干扰风险
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2024-02-22 , DOI: 10.1021/acs.est.3c09590
Zhenhui Xie ₁ , Xiyang Zhang ₁ , Yanqing Xie ₁ , Fei Liu ₁ , Bin Sun ₁ , Wen Liu ₁ , Jiaxue Wu ₁ , Yuping Wu ₁

Affiliation

尽管近年来生物群中有机磷酸酯 (OPE) 的不断检测表明健康风险不断增加，但有关海洋哺乳动物中有机磷酸酯 (OPE) 的发生和潜在风险的信息仍然有限。本研究首次对 2005 年至 2021 年南海北部 (NSCS) 10 种鲸目动物 ( n = 84) 中 10 种传统 OPEs (tOPEs) 和 5 种新兴 OPEs (eOPEs) 的身体负担和潜在风险进行了调查。除磷酸 2-乙基己基二苯酯 (EHDPHP) 外，所有 OPE 均在这些鲸类动物中检测到，表明它们在 NSCS 中广泛存在。尽管从2005年到2021年，座头海豚体内的Σ ₁₀ tOPEs水平保持稳定，但Σ ₅ eOPEs的浓度却显着增加，表明华南地区对这些新一代OPEs的需求不断增长。城市地区附近的海豚通常比农村地区的海豚表现出更高的 OPE 浓度，反映了该地区发生的 OPE 的环境趋势。除 EHDPHP 外，座头海豚中的所有 OPE 同系物均表现出 >1 的母体转移率，表明海豚胎盘可能不是 OPE 的有效屏障。在座头海豚中观察到的 OPE 水平与激素（三碘甲状腺原氨酸、甲状腺素和睾酮）之间存在显着相关性，表明 OPE 暴露可能会对海豚种群产生内分泌干扰作用。

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Bioaccumulation and Potential Endocrine Disruption Risk of Legacy and Emerging Organophosphate Esters in Cetaceans from the Northern South China Sea

Despite the increasing health risks shown by the continuous detection of organophosphate esters (OPEs) in biota in recent years, information on the occurrence and potential risks of OPEs in marine mammals remains limited. This study conducted the first investigation into the body burdens and potential risks of 10 traditional OPEs (tOPEs) and five emerging OPEs (eOPEs) in 10 cetacean species (n = 84) from the northern South China Sea (NSCS) during 2005–2021. All OPEs, except for 2-ethylhexyl diphenyl phosphate (EHDPHP), were detected in these cetaceans, indicating their widespread occurrence in the NSCS. Although the levels of the ∑₁₀tOPEs in humpback dolphins remained stable from 2005 to 2021, the concentrations of the ∑₅eOPEs showed a significant increase, suggesting a growing demand for these new-generation OPEs in South China. Dolphins in proximity to urban regions generally exhibited higher OPE concentrations than those from rural areas, mirroring the environmental trends of OPEs occurring in this area. All OPE congeners, except for EHDPHP, in humpback dolphins exhibited a maternal transfer ratio >1, indicating that the dolphin placenta may not be an efficient barrier for OPEs. The observed significant correlations between levels of OPEs and hormones (triiodothyronine, thyroxine, and testosterone) in humpback dolphins indicated that OPE exposures might have endocrine disruption effects on the dolphin population.

更新日期：2024-02-22

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