Kinetics of Bioaccumulation of Chromium (VI) in Danio rerio Species

The influx of substantial amounts of heavy metals into aquatic environments can lead to the accumulation of these pollutants in fish and their predators, posing a significant threat to both ecosystems and human well-being. Our investigation focused on examining the chromium (Cr) levels in the tissues of Danio rerio specimens across various calculated concentrations. While the levels of Cr bioaccumulation in muscle tissue generally remain within safe limits for human consumption, the continuous presence of heavy metals near the acceptable threshold is a cause for concern. It is crucial to alert populations who rely on fish from polluted rivers for sustenance. Our findings also highlight the need for caution among individuals consuming fish from river networks, particularly when certain areas are linked to high environmental pollutant rates. Even in basin stretches with low contamination levels, the regular consumption of fish, especially migratory species, like Surubim catfish, demands careful consideration due to potential exposure to pollutants from connected regions.