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类固醇在河口环境中的时空空间分布和优先评估:对环境风险管理的影响

Ru Xu¹, Nian-Nian Wu², Shan Liu³

¹Jiangxi Provincial Key Laboratory of Environmental Pollution Control, Jiangxi Academy of Eco-Environmental Sciences and Planning, Nanchang 330039, China.

Marine pollution bulletin

|April 19, 2025

概括

在Jiulong河口 (JRE) 普遍存在类固醇污染物,沉积物作为主要水库. 孕激素和丸激素被确定为高优先级的污染物,需要有针对性的管理策略.

科学领域:

环境化学环境化学
生态毒理学生态毒理学
河口科学河口科学

背景情况:

类固醇是内分泌干扰化合物,对环境造成重大关注.
河口生态系统容易受到各种污染物的污染,包括类固醇.
龙河口 (JRE) 需要对类固醇污染进行全面评估.

研究的目的:

评估在JRE中类固醇污染物的时空和多媒体分布.
确定JRE内的类固醇的质量库存和初级沉积槽.
在JRE中使用多度指标方法识别优先类固醇污染物.

主要方法:

在水中检测和量化七个类固醇和沉积物中的十个类固醇.
在干旱和潮湿季节对类固醇度的分析.
评估影响类固醇分布的环境因素 (温度,盐度,pH,叶绿素a,TOC).
质量库存计算和污染物热点的识别.

主要成果:

类固醇度在水中从0.2到51ng/L,在沉积物中从ND到12ng/g不等.
自然类固醇是全年在水和沉积物中占主导地位的化合物.
沉积物含有超过90%的总类固醇质量库存在JRE.
孕激素和丸激素被确定为高优先级的污染物,特别是在干旱季节.

结论:

沉积物是JRE中类固醇污染物的主要沉积物.
疏水性和环境因素显著影响类固醇的分布.
孕激素和丸激素存在重大风险,需要在JRE中进行集中管理.
这项研究为河口污染管理和风险评估提供了关键数据.

关键词:

分布行为分布行为.河口环境河口环境大规模的库存库存.优先进行污染物选.时间空间的模式.类固醇和其代谢物

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