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Heavy metals in sediment and fish from two coastal lagoons of the Mexican Central Pacific
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Heavy metals in sediment and fish from two coastal lagoons of the Mexican Central Pacific
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Heavy metals in sediment and fish from two coastal lagoons of the Mexican Central Pacific
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Journal Article
Heavy metals in sediment and fish from two coastal lagoons of the Mexican Central Pacific
2021
Overview
The present work analyzed the concentration of As, Cd, Pb, and Hg in sediment and the Hg concentration in fish muscle from two coastal lagoons in the states of Jalisco (Barra de Navidad Lagoon) and Colima (Cuyutlán Lagoon), Mexico. Both lagoons showed relatively low levels of metal contamination and potential health risk compared to other Mexican areas. A non-carcinogenic hazard quotient (HQ) was determined. As (10.7 ± 1.3 - 25.4 ± 3.1 μg g-1) and Pb (42.7 ± 4.2 - 123.9 ± 14.7 μg g-1) concentrations exceeded the permissible levels, otherwise for Hg and Cd were below the limits. The highest total mercury concentration was found in Haemulopsis sp. and Lutjanus sp. with 0.23 and 0.1 μg g-1 (wet weight) respectively, out of 14 species of fish analyzed that are frequently consumed locally. HQ based on the national daily per capita consumption of fish in Mexico and the consumption of fish associated with fishing communities in Mexico showed an HQs >2, which manifests the vulnerability of these communities to persistent toxic and bioaccumulative contaminants.
Publisher
Pontificia Universidad Catolica de Valparaiso, Escuela de Ciencias del Mar,Pontificia Universidad Catolica de Valparaiso,Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
