Evaluation of total chromium levels in drinking water
Elevated chromium levels in the natural waters are not common, but the high concentrations of naturally occurring Cr have been reported in the groundwater of several aquifer systems.This finding is linked with the occurrence of mafic/ultramafic rocks and associated with the alkaline and oxidizing co...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | Brasil |
| Institución: | Instituto Adolfo Lutz |
| Repositorio: | Revista do Instituto Adolfo Lutz (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.periodicos.saude.sp.gov.br:article/34184 |
| Acceso en línea: | https://periodicos.saude.sp.gov.br/RIAL/article/view/34184 |
| Access Level: | acceso abierto |
| Palabra clave: | total chromium water mass spectrometry cromo total água espectrometria de massas |
| Sumario: | Elevated chromium levels in the natural waters are not common, but the high concentrations of naturally occurring Cr have been reported in the groundwater of several aquifer systems.This finding is linked with the occurrence of mafic/ultramafic rocks and associated with the alkaline and oxidizing conditions. This study aimed at monitoring the total chromium concentration in drinking water samples from São José do Rio Preto city. Cr concentrations higher than the limit established by the Brazilian Legislation (0.05 mg/L) were detected in the groundwater from the deep supply wells. Total chromium was determined by using an Inductively Coupled Mass Spectrometer (ICP-MS) in 104 samples collected from the public drinking water distribution networks in 52 sites, from 2013 to 2017. Cr concentrations above the method limit of quantification (0.001 mg/L) were found in 99% of the analyzed samples. Approximately 15% of the collected samples presented Cr in concentrations above the established legislation limit for drinking water (Ordinance 2914/2011), that should be considered as improper for consumption. |
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