DNA Barcoding and Marine Genomics Laboratory, Department of Marine Science, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620 024, India.
Department of Geography and Environment, Bar-Ilan University, Ramat Gan 52900, Israel.
Mar Pollut Bull. 2022 Nov;184:114169. doi: 10.1016/j.marpolbul.2022.114169. Epub 2022 Oct 3.
Distribution of five heavy metals (Cd, Cr, Cu, Pb, and Zn) in molluscan and echinoderm species collected from Kerala and Gulf of Mannar in Southern India is presented. Atomic absorption spectrometry was used to determine metal concentrations. Concentrations of metals showed a descending order of Zn > Cu > Pb > Cd > Cr. Zn and Cu might have originated from both natural and man-made sources. However, Cd, Cr, and Pb could have strong anthropogenic influences such as harbour activities and untreated industrial and agricultural runoff. Bioaccumulation factor (BAF) value of Cd in two edible bivalves from Munambam is slightly greater than one. Regular consumption of Cd-loaded shellfish can cause serious health hazards and concerns to humans. BAF results showed that Zn, Cu, Pb, and Cd were more bioaccumulated and beyond the threshold limits in certain species. It is evident that consumption of shellfish from the Kerala coastal waters may have adverse health impacts to the consumers.
本文介绍了从印度南部喀拉拉邦和芒纳尔湾采集的软体动物和棘皮动物中五种重金属（Cd、Cr、Cu、Pb 和 Zn）的分布情况。采用原子吸收光谱法测定金属浓度。金属浓度的顺序为 Zn > Cu > Pb > Cd > Cr。Zn 和 Cu 可能来自自然和人为来源。然而，Cd、Cr 和 Pb 可能受到港口活动和未经处理的工业和农业径流等人为因素的强烈影响。芒纳姆姆两种食用双壳贝类的 Cd 生物累积因子（BAF）值略大于 1。经常食用含 Cd 的贝类可能会对人类健康造成严重危害和担忧。BAF 结果表明，某些物种中 Zn、Cu、Pb 和 Cd 的生物累积性更强，超过了阈值限制。显然，食用喀拉拉邦沿海水域的贝类可能会对消费者的健康产生不利影响。
