蛇和青中的新型和传统制阻燃剂:组织分布,生物放大和母体转移
Guanzhen Sun1, Xinyu Du2, Yan Wu3
1College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China.
The Science of the total environment
|June 30, 2023
概括
这项研究检查了长江三角洲爬行动物和两动物中的聚化二乙烯 (PBDE) 和新型化阻燃剂 (NBFR). NBFRs显示生物积累的潜力,脂肪组织是蛇的主要储存地点.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 生物监测 生物监测
背景情况:
- 聚二乙烯 (PBDE) 和新型制阻燃剂 (NBFR) 是广泛使用的阻燃剂.
- 关于野生动物,特别是两动物和爬行动物的NBFR生物积累,现场数据有限.
- 了解不同生态系统中的污染物行为对于风险评估至关重要.
研究的目的:
- 研究来自长江三角洲的爬行动物和两动物物种中PBDE和NBFRs的组织特异生物积累.
- 评估这些污染物的生物放大潜力和母体转移.
- 在这些脊椎动物群体中提供第一个基于现场的关于NBFR组织分布和母体转移的见解.
主要方法:
- 在短尾猛虎,红背鼠蛇和黑斑青的脂肪组织,肝脏和肌肉中分析PBDE和NBFR.
- 从猎物到捕食者,主要的原生物量化和生物放大因子 (BMFs) 的计算.
- 评估与化学脂友性相关的母卵转移效率.
主要成果:
- 在所有研究物种中检测到PBDE和NBFR,蛇的水平高于青.
- 蛇的脂肪组织被确定为PBDE和NBFR的主要存储地点.
- 对某些PBDE类原体观察到生物放大,但对NBFRs没有;母体转移与脂友性有关.
结论:
- 替代NBFR在爬行动物和两动物中表现出显著的生物积累潜力.
- 组织分布模式突出了脂肪组织在储存这些持久性有机污染物的作用.
- 这些发现强调了由于其潜在的生态风险,需要继续对野生动物中的NBFR进行监测.
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