Evaluación del arsénico (As), cadmio (Cd), mercurio (Hg) y plomo (Pb) en peces, crustáceos y moluscos de mayor consumo en Isla Fuerte (Caribe colombiano): estimación del riesgo por ingesta a la salud humana
Heavy metals are a special worldwide concern due their environmental persistency; these pollutants can accumulate and exponentially increase their levels, representing a high ecological and toxicological risk when they generate pollution processes in the biota and marine ecosystems. This work evalua...
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| Format: | master thesis |
| Status: | Versión enviada para evaluación y publicación |
| Publication Date: | 2021 |
| Country: | Colombia |
| Institution: | Universidad de Córdoba |
| Repository: | Repositorio Institucional Unicórdoba |
| Language: | Spanish |
| OAI Identifier: | oai:repositorio.unicordoba.edu.co:ucordoba/4142 |
| Online Access: | https://repositorio.unicordoba.edu.co/handle/ucordoba/4142 |
| Access Level: | Open access |
| Keyword: | Metales pesados Caribe colombiano Biota marina Ecotoxicología salud humana Heavy metals Colombian Caribbean Marine biota Ecotoxicology Human health |
| Summary: | Heavy metals are a special worldwide concern due their environmental persistency; these pollutants can accumulate and exponentially increase their levels, representing a high ecological and toxicological risk when they generate pollution processes in the biota and marine ecosystems. This work evaluates the concentrations of arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb) in muscle of fish, crustaceans and mollusks, as well as the potential risk to human health associated with the consumption of this species in Isla Fuerte - Colombian Caribbean. The individuals studied were captured by fishermen of the Island between march and october in 2019, in capture areas considered of transit, stay and feeding of fish, crustaceans and mollusks using traditional fishing techniques such as fishhook, manual capture and immersion with snorkel. A total of 138 individuals were sampled, corresponding to 112 adult fish, 16 adult crustaceans and 10 adult mollusks. The quantification of arsenic (As), cadmium (Cd) and lead (Pb) in muscle of sampled individuals was carried out by atomic absorption spectrophotometry with graphite furnace (GFAAS), the quantification of mercury (Hg) was carried out by the US EPA-7473 method (thermal decomposition, amalgamation, and atomic absorption spectrometry), using a direct mercury analyzer (DMA-80). In this sense, fish species Balistes capriscus showed the highest concentrations of As (6272 ± 2791 ng/g) and Caranx hippos, the highest concentrations of Hg (381,26 ± 52 ng/g), both species with carnivorous habits. While the herbivorous benthic mollusk Lobatus gigas bioaccumulated more efficiently Cd (170 ± 91,6 ng/g) and Pb (51,05 ± 2,77 ng/g). In this way, Pearson's correlation coefficients (p |
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