对海洋微藻的形毒性:使用Diatom Chaetoceros lorenzianus作为模型生物体的研究
Pooja Chavan1, Rajesh Kumar2,3, Raja Rajamohan2
1Biofouling and Biofilm Processes Section, Water and Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam, 603 102, India. pchavan19@gmail.com.
Archives of environmental contamination and toxicology
|January 3, 2024
概括
电厂的副产品形式,通过破坏细胞膜和叶绿素,对海洋藻产生重大影响. 即使是目前的排放水平也对植物浮游生物构成风险,需要进一步研究安全限制.
科学领域:
- 海洋生态毒理学 海洋生态毒理学
- 环境化学环境化学
背景情况:
- 甲是发电厂冷却系统中持续化的一种副产品.
- 关于其对海洋浮游植物的毒性存在有限的数据.
研究的目的:
- 对海洋藻Chaetoceros lorenzianus进行形毒性的研究.
- 确定毒理影响和作用方式.
主要方法:
- 暴露于体 (0-1000μg/L) 的体3小时和24小时.
- 评估了叶绿素的光,细胞活力 (SYTOX®绿色染料) 和基因毒性 (彗星测定).
主要成果:
- 在所有度下观察到光和活性的显著变化.
- 活力和叶绿素的24小时IC50值分别为255.6微克/升和343.5微克/升.
- 彗星测定表明低水平的DNA损伤 (5-20%的尾巴DNA).
结论:
- 形虫会损害藻中的细胞膜,内部机械,DNA和叶绿素.
- 目前的排放水平 (50-250μg/L) 显著影响植物浮游生物.
- 现场条件可能会减轻影响,但需要进一步的研究来确定安全的排放极限.
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