Contamination of Cu, Zn, Fe and Mn in Katsuwonus pelamis (Linnaeus, 1758) from Karachi Fish Harbor and Potential Risks to Human Health

The international journal of marine science Pub Date : 2017-04-05 DOI:10.5376/IJMS.2017.07.0009

Quratulan Ahmed, L. Bat, F. Yousuf

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引用次数: 8

Abstract

In the present study, skipjack tuna ( Katsuwonus pelamis ) from the Karachi coast between 2006 and 2011 were chosen and analyzed for the Fe, Mn, Cu and Zn levels in the edible dorsal tissues, livers, kidney, gills and gonads. The liver tissues had the highest concentrations of metals (623±103 mg kg-1 for Fe, 49±13 mg kg-1 for Mn, 67±17 mg kg-1 for Cu and 68±21 mg kg-1 for Zn). The muscle maximum concentrations of Fe, Mn, Cu, and Zn were 46±17, 6±2, 7±2 and 7±2 mg kg-1, respectively. The results revealed that Fe concentrations were higher than those of other metals. The values obtained were compared with the international regulation maximal allowable standards in seafood. The current work attested that calculated diurnal and hebdomadal intakes of Fe, Mn, Cu and Zn levels by way of consumption of skipjack tuna were not in excess of the Permissible Tolerable Daily Intake (PTDI) and Provisional Tolerable Weekly Intake (PTWI) values established by FAO/WHO. In conclusion, K. pelamis appears to be useful bioindicator due to their accumulation of the metals and continued sampling and pollution effects on food chain organisms comparatively are required for further investigations.

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卡拉奇渔港大螯虾(Linnaeus, 1758)中铜、锌、铁、锰的污染及其对人体健康的潜在危害

本研究选取了2006 - 2011年卡拉奇海岸的鲣鱼(Katsuwonus pelamis)，分析了其可食用背组织、肝脏、肾脏、鳃和性腺中的铁、锰、铜和锌水平。肝组织中重金属浓度最高(铁623±103 mg kg-1，锰49±13 mg kg-1，铜67±17 mg kg-1，锌68±21 mg kg-1)。肌肉中Fe、Mn、Cu和Zn的最大浓度分别为46±17、6±2、7±2和7±2 mg kg-1。结果表明，铁的浓度高于其他金属。将所得值与国际规定的海产品最高允许标准进行比较。目前的工作证明，通过食用鲣鱼金枪鱼计算出的铁、锰、铜和锌的日摄入量和周摄入量不超过粮农组织/世卫组织确定的允许每日可耐受摄入量和临时每周可耐受摄入量。综上所述，大贝拉米是一种有用的生物指示物，其对重金属的积累能力和对食物链生物的污染影响有待进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The international journal of marine science

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