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Does nitrite and nitrate levels in drinking water impact the health of people in Dakahlia governorate, Egypt?
Environ Sci Pollut Res Int ; 25(20): 19728-19738, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29736649
ABSTRACT
A total of 1291 drinking water samples were examined for nitrite and nitrate during 6 months from December, 2015 to May, 2016 at 17 cities of Dakahlia governorate (Nile Delta, north of Egypt), and the results were utilized for assessment of health risk of the exposure from drinking water by calculating average daily intake (ADI), hazard quotient (HQ), and the hazard index (HI). The nitrite and nitrate in drinking water had a concentration range of 0.030-0.113 and 2.41-8.70 mg L-1, with mean values of 0.059 ± 0.014 and 5.25 ± 1.61 mg L-1, respectively. Nitrite and nitrate levels in rural areas and ground water samples were significantly higher than that in the urban ones. None of the analyzed samples exceeded WHO guideline values that set out to prevent methemoglobinemia. The values of HQ and HI for all age groups do not exceed unity indicating a low risk of methaemoglobinaemia for the population in this area. Results of the present study indicate that there is no health risk of residents from nitrite and nitrate through drinking water in the studied area. However, the other sources of exposure to nitrite and nitrate should be investigated in further studies.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Abastecimento de Água / Água Potável / Exposição Ambiental / Nitratos / Nitritos Aspecto clínico: Etiologia Limite: Feminino / Humanos País/Região como assunto: África Idioma: Inglês Revista: Environ Sci Pollut Res Int Assunto da revista: Saúde Ambiental / Toxicologia Ano de publicação: 2018 Tipo de documento: Artigo País de afiliação: Egito