Evaluación de las concentraciones de cadmio, plomo, zinc y cromo en especies ícticas del departamento de la Guajira-Colombia y riesgo de exposición en humanos
Campo Tatis, Natalia Paola
Simanca Martínez, Karen Julieth
Show full item record
Show full item record
AbstractThe concentrations of heavy metals (Cd, Pb, Zn and Cr) were evaluated in the muscle tissue of the fish species bocachico (Prochilodus magdalenae), bagre de mar (Arius proops), pargo platero (Lutjanus synagris), cojinúa (Caranx crysos), boca colorada (Haemulon plumierii), mojarra lora (Oreochromis niloticus), tilapia (Oreochromis sp) and mojarra rayada (Eugerres plumieri), which are commercialized in the municipalities of Fonseca, Distracción, Mayapo and Riohacha of the department of La Guajira. Between fourteen (14) and twenty (20) units of each species were collected, obtaining a total of one hundred twenty-four samples (124), which were analyzed by atomic absorption spectrometry. The highest concentrations for Zn, Cr, Pb and Cd were registered respectively in the species Prochilodus magdalenae (4.648 ± 0.471 μg g-1), Orechromis sp (0.726 ± 0.164 μg g-1) Eugerres plumieri (0.117 ± 0.057 μg g-1) y Lutjanus synagris (0.016 ± 0.004 μg g-1). The lowest concentration of Cd and Cr metals was evidenced in the specie Prochilodus magdalenae with 0.008 ± 0.003 μg g-1 and 0.268 ± 0.169 μg g-1 respectively. The lower content of Pb was recorded in C. crysos (0.018 ± 0.001 μg g-1) and Zn in E. Plumieri (2,990 ± 0.649 μg g-1). None of the concentrations exceeded the permissible limits established by FAO, WHO, EC and NTC 1443. The estimation of potential risk (RP) associated with fish consumption indicated that none of the species studied in the present study exceeded the value of RP = 1, however, chromium presented the greatest potential risk. This risk did not exceed the allowed limit, it obtained values very close to one, mainly for the species Lutjanus synagris (0.935), For this reason, it is recommended that the consumption of all species be moderate, because a long bioaccumulation periods of exposure of these metals in the human body could trigger various affectations in the organism, having repercussions on food safety and public health of the population of the study area.