Department of Marine Science, Bharathidasan University, Tiruchirapalli 620024, Tamil Nadu, India.
Department of Marine Science, Bharathidasan University, Tiruchirapalli 620024, Tamil Nadu, India.
Mar Pollut Bull. 2020 May;154:111069. doi: 10.1016/j.marpolbul.2020.111069. Epub 2020 Mar 14.
Bioaccumulation of metals in ten species of green seaweeds collected along the Palk Bay was assessed in the present study. The accumulation of metals in all the ten species were in the order of Pb > Cu > Zn > Cd. Cd was recorded above the permissible level, and Pb, Cu and Zn were below the permissible level of CEQG. The metal concentration in seaweeds was above the WHO standards. The permissible levels of metals were compared with the standards of human health risk assessment, which shows that the exposure of metals from seaweeds has moderate hazard risk to humans. The result of trace element accumulation in four seasons was in the order of summer >monsoon>pre-monsoon>post monsoon. One-way ANOVA revealed that Cd and Pb show significant differences (p˂0.01) in all the species. Cu showed significant variation (p˂0.01) in all the four seasons. Zn also showed significant difference (p˂0.01) during pre-monsoon season.
本研究评估了沿帕尔克湾采集的 10 种绿藻中金属的生物累积情况。所有 10 种物种中金属的累积顺序为 Pb > Cu > Zn > Cd。Cd 的含量超过了可允许水平，而 Pb、Cu 和 Zn 的含量低于 CEQG 的可允许水平。海藻中的金属浓度高于世界卫生组织的标准。金属的可允许水平与人类健康风险评估标准进行了比较，结果表明，人类从海藻中接触金属存在中度危害风险。四种季节中微量元素的积累顺序为夏季>季风期>前季风期>后季风期。单因素方差分析显示，Cd 和 Pb 在所有物种中均存在显著差异（p˂0.01）。Cu 在所有四个季节均表现出显著变化（p˂0.01）。Zn 在季风前季节也存在显著差异（p˂0.01）。
