Assessment of Health Risks from Cadmium and Lead Contamination in Aquatic Animals near the Kwai Noi River
DOI:
https://doi.org/10.53848/ssstj.v12i1.985Keywords:
Cadmium, Lead, Aquatic Animals, Health Risk AssessmentAbstract
This study assesses the health risks associated with cadmium and lead contamination in aquatic animals consumed by local populations near the Kwai Noi River in Makham Sung Subdistrict, Phitsanulok, Thailand. Four commonly consumed species—freshwater shrimp, pond snails, silver barb, and Nile tilapia—were analyzed for cadmium and lead levels. The results show that freshwater shrimp and pond snails contained the highest levels of contamination, although these levels were within Thai food safety standards for cadmium (0.20 mg/kg) and lead (1 mg/kg). Health risks were evaluated using Chronic Daily Intake (CDI) and Hazard Quotients (HQ), revealing no significant immediate risk to consumers, as HQ values remained below 1. Lead intake, though classified as carcinogenic, was found to be significantly below the tolerable daily intake. Community participation played a key role in knowledge dissemination and risk management, with the study emphasizing the need for ongoing monitoring and public education to mitigate long-term bioaccumulation risks.
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