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塑料相关化学品的微塑料在河流盆地食物网中的增强生态风险

Xin Ling^1,2, Guanghua Lu², Runren Jiang²

¹School of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, PR China.

Environmental science & technology

|March 3, 2026

概括

微塑料 (MP) 和相关化学物质 (PAC) 在河流生态系统中积累,对水生生物构成风险. 这项研究揭示了它们在盆地食物网中的生物放大,突出了对捕食者的重大生态危险.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
海洋生物学海洋生物学

背景情况:

微塑料 (MP) 和与塑料相关的化学物质 (PAC) 是普遍存在的环境污染物.
它们在盆地生态系统中的食用转移和生物放大是鲜为人知的,但对于风险评估至关重要.
研究了长江下游土生物中的MP和PAC积累.

研究的目的:

为了检查MPs和PACs在盆地生物中的积累.
评估MP和PAC的生物放大和饮食摄入量.
评估河流食物网中不同热量级的PAC相关的生态风险.

主要方法:

从长江下游的盆地动物群中量化MP和PAC.
评估MP的大小,形状和PAC组成.
生物放大因子 (BMF) 和风险表征比率 (RCR) 的计算.

主要成果:

在盆地动物群中,MP和PAC广泛存在,并观察到高度.
纤维和碎片<500微米是主要的MP类型.
在*Limnoperna lacustris*中发现了MP和24个PAC,包括7个优先级PAC的同时出现和共同生物放大.
鉴于cobiomagnified PACs,对捕食者存在重大生态风险.
饮食摄入量和生物放大控制了PAC风险,高消费低风险的猎物减轻了更高的营养水平的风险.

结论:

议员和PAC在河流盆地食物网中经历了热带转移和生物放大.
特定的PACs与MPs共同增大,对捕食者构成相当大的生态风险.
了解饮食摄入量和生物放大对于评估水生生态系统中PAC相关风险至关重要.

关键词:

地食物网 (Benthic Food Web) 是一种食物网络.评估生态风险评估生态风险微塑料是微塑料中的一种.有机污染物有机污染物获得奖杯的转移.

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