Analysis of Cadmium, Mercury and Lead in oysters (Crassostrea virginica) in a protected area of southeastern Mexico associated with the risk to human health

Journal of trace elements and minerals Pub Date : 2024-06-09 DOI:10.1016/j.jtemin.2024.100175

Claudia Aguilar , Carlos Montalvo , Yunuen Canedo , Alejandro Ruiz , Julia Cerón , Rosa Cerón , Mohamed Abatal , Francisco Anguebes

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Abstract

Background

Metal pollution is a problem in many parts of the world. These metals can be harmful when they exceed the recommended limits. This study aimed to assess the levels of cadmium (Cd), mercury (Hg), and lead (Pb) in the tissues of oysters (Crassostrea virginica) within a protected area in southeastern Mexico. Additionally, the study aimed to conduct a risk analysis for human health associated with these metals. It is anticipated that the observed metal levels will be lower compared to prior studies, thereby not posing a significant risk to the local population.

Methods

The tissue of oyster samples was treated under the techniques of the Official Mexican Standards and analyzed using atomic absorption spectroscopy. The metal concentrations were used to calculate the estimated daily intakes (EDI), target hazard quotients (THQ), hazard index (HI), and target cancer risks (TR), for children and adults.

Results

Maximum values of Cd (1.99 μg g⁻¹), exceeded the permissible limits of the Official Mexican Standards. Pb (0.99 μg g⁻¹) and Hg (0.64 μg g⁻¹) are within the recommended limits. The THQ and HI for Cd, Pb, and Hg were lower than the United States Environmental Protection Agency (US-EPA) criteria.

Conclusions

Based on our results, whether oyster (Crassostrea virginica) consumption is recommended in adults and reducing consumption in children; to diminish the risk of exposure to Cd, Pb, and Hg.

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分析墨西哥东南部保护区牡蛎（Crassostrea virginica）中的镉、汞和铅对人类健康的危害

背景金属污染是世界上许多地方都存在的问题。当这些金属含量超过建议限值时，就会对人体造成危害。本研究旨在评估墨西哥东南部一个保护区内牡蛎（Crassostrea virginica）组织中的镉（Cd）、汞（Hg）和铅（Pb）含量。此外，该研究还旨在对与这些金属有关的人类健康进行风险分析。预计观察到的金属含量将低于之前的研究，因此不会对当地人口造成重大风险。方法按照墨西哥官方标准的技术处理牡蛎样本组织，并使用原子吸收光谱进行分析。结果镉的最大值（1.99 μg g-1）超过了墨西哥官方标准的允许限值。铅（0.99 微克/克-1）和汞（0.64 微克/克-1）在建议限值之内。结论根据我们的研究结果，建议成年人食用牡蛎（Crassostrea virginica）并减少儿童食用量，以降低接触镉、铅和汞的风险。

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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来源期刊

Journal of trace elements and minerals Medicine and Dentistry (General), Analytical Chemistry, Environmental Science (General), Toxicology, Biochemistry, Genetics and Molecular Biology (General), Nutrition, Veterinary Science and Veterinary Medicine (General)

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审稿时长

65 days