Nitrogen species in drinking water indicate potential exposure pathway for Balkan Endemic Nephropathy
| Autor: | Karen Chou, Nedialka D. Niagolova, Varban Ganev, David T. Long, Shawn P. McElmurry, Thomas C. Voice, Evangelos A. Petropoulos, I. Havezov |
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| Rok vydání: | 2004 |
| Předmět: |
Endemic Diseases
Nitrogen Health Toxicology and Mutagenesis Sodium Potassium Balkan Nephropathy Drinking chemistry.chemical_element Rural Health Toxicology chemistry.chemical_compound Balkan endemic nephropathy Nitrate Chlorides Ammonia Water Supply medicine Humans Nitrite Water pollution Bulgaria Nitrites Hydrology Nitrates Water General Medicine Environmental Exposure Contamination medicine.disease Pollution chemistry Environmental chemistry Environmental science Water Pollutants Chemical |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 134(2) |
| ISSN: | 0269-7491 |
| Popis: | This study explored two hypotheses relating elevated concentrations of nitrogen species in drinking water and the disease Balkan Endemic Nephropathy (BEN). Drinking water samples were collected from a variety of water supplies in both endemic and non-endemic villages in the Vratza and Montana districts of Bulgaria. The majority of well water samples exceeded US drinking water standards for nitrate + nitrite. No statistically significant difference was observed for any of the nitrogen species between villages classified as endemic and non-endemic. Other constituents (sodium, potassium and chloride) known to be indicators of anthropogenic pollution were also found at elevated concentrations and all followed the order wells > springs > taps. This ordering coincides with the proximity of human influences to the water sources. Our results clearly establish an exposure pathway between anthropogenic activity and drinking water supplies, suggesting that the causative agent for BEN could result from surface contamination. |
| Databáze: | OpenAIRE |
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