10/10/2017 - 13:45 - 14:40
Apresentações |
18479 - LEAD EXPOSURE IN DRINKING WATER FROM UNDERGROUND WELLS IN AMAZON
BRENDA RODRIGUES CHAGAS - PPGEVS/IEC, KARYTTA SOUSA NAKA - PPGEVS/IEC, THAÍS KAROLINA LISBOA DE QUEIROZ - PPGEVS/IEC, LORENA DE CÁSSIA DOS SANTOS MENDES - SAMAM/IEC, VOLNEY DE MAGALHÃES CÂMARA - SAMAM/IEC/IESC/UFRJ, MARCELO DE OLIVEIRA LIMA - PPGEVS/SAMAM/IEC
Objective: To evaluate the lead (Pb) environmental exposure in drinking water from underground wells of two districts in Amazon: Dom Manoel, located in Barcarena City, and Vila de Beja, located in Abaetetuba City, both in Pará State, Northern Brazil. Methods: The sampling occurred in November and December 2016. For each district, five residences were randomly selected and Pb was quantify by inductively coupled plasma mass spectrometry (ICP-MS). The recommended value (≤ 10 μg.L-1 of Pb) defined for drinking water by the Ministry of Health (MS) was used as reference. Results: The results showed that Pb mean levels in both investigated districts were below the limits recommended by the MS. The Pb mean levels in Dom Manoel were 6.548 (0.139-14.847) μg.L-1 and 40% of the samples were slightly up the recommended values. In contrast, in Vila de Beja, the Pb mean levels were 0.376 (0.003-0.708) μg.L-1, about 25 times lower than the value recommended by the MS and 17 times lower than the mean levels in Dom Manoel. Conclusion: The results showed that the drinking water in Dom Manoel and of Vila de Beja districts were within the standards established by the MS, however, it was evidenced that the groundwater in Dom Manoel has higher Pb levels. O Pb haven´t known physiological function in the human organism and even in small doses can compromise biochemical processes.
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