Concentrations of nitrates in drinking water and incidence of gastric carcinomas: First descriptive study of the piemonte region, Italy

Gilli, Giorgio; Corrao, Giulia; Favilli, Silvia

doi:10.1016/0048-9697(84)90039-1

Cited by 69 publications

(35 citation statements)

References 8 publications

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“…Elevated levels of methaemoglobin concentrations were found in Russia, in children who drank water containing as much as 182 mg l" 1 N0 3 (Handa, 1989). In Colombia and Italy, high levels of nitrate in well waters were associated with an increased risk of gastric cancer (Cuello et al, 1976;Gilli et al, 1984). In a cross-sectional study in an area with a high incidence of gastric cancer in northeastern China, an association was observed between high levels of nitrate in drinking water supplies and neoplastic changes in the stomach (Xu et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Impact of clayey soils on nitrate pollution in the groundwater of the lower Vamsadhara River basin, India

Rao

1998

Hydrological Sciences Journal

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The main contributors of high nitrate concentrations in the groundwater of the Vanisadhara River basin are the point sources associated with livestock barns while the seasonal variations in nitrate (N0 3 ) concentrations are attributed to the prevailing hydrogeological conditions. The observed increase in nitrate under rising water level conditions, contradicting an expected decrease due to dilution by rainwater, is believed to be caused by the contribution of N0 3 from the clayey soil. The processes of sorption, retention and slow denitrification in clay are probably responsible for the contribution of nitrate to the groundwater in the post-monsoon season. The positive linear relationship between chloride and nitrate is in agreement with the similarities in behaviour of these ions in the clayey formations.Influence des sols argileux sur la pollution par les nitrates des eaux souterraines de l'aval du bassin de la Rivière Vanisadhara (Inde) Résumé La principale origine des importantes concentrations de nitrates observées dans les eaux souterraines du bassin de la Rivière Vamsadhara est constituée de rejets ponctuels provenant d'élevages tandis que les variations saisonnières des concentrations en nitrates peuvent être attribuées au contexte hydrogéologique. Nous pensons que l'accroissement anormal des teneurs en nitrates associé à l'élévation du niveau des eaux peut être attribué à un apport de nitrates provenant des sols argileux. Les processus d'adsorption, de rétention et de dénitrification lente dans les argiles sont probablement à l'origine d'un apport de nitrates dans les eaux souterraines dans la période suivant la mousson. La corrélation linéaire positive entre chlorures et nitrates est cohérente avec le comportement de ces ions dans les formations argileuses.

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Section: Introductionmentioning

confidence: 99%

Impact of clayey soils on nitrate pollution in the groundwater of the lower Vamsadhara River basin, India

Rao

1998

Hydrological Sciences Journal

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“…After gastrointestinal resorption and recirculation of foodborne nitrate, reduction to nitrite occurs in the oral cavity by bacterial activity, and carcinogenic N-nitroso compounds may subsequently be synthesized in the stomach from reingested nitrite and secondary amines also present in food. However, epidemiological studies have presented conflicting evidence to support this hypothesis: both inverse or absent associations (6)(7)(8)(9)(10) and positive correlations (9,(11)(12)(13)(14) have been reported, the latter indicating an increased stomach cancer risk at nitrate drinking water levels of 20 to 30 mg/L (11,13). The WHO concluded (S) that no firm epidemiological evidence has been provided to link increased incidence ofgastric cancer to high nitrate levels in drinking water.…”

Section: Introductionmentioning

confidence: 95%

Nitrate Contamination of Drinking Water: Evaluation of Genotoxic Risk in Human Populations

Kleinjans¹,

Albering²,

Marx³

et al. 1991

Environmental Health Perspectives

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“…Table 1 indicates that 72.3% and 29.8% of the samples for nitrate and nitrite concentrations exceed the desirable limit of 5.0 and 0.01 mg/L, respectively. High nitrate values can cause blue baby disease or methemoglobinemia in children, and nitrite is more toxic to public health than nitrate [8,34]. The above analysis demonstrates that these hydrochemical variables (barium, molybdenum, chromium, arsenic, mercury, fluoride, nitrate, and nitrite) have the significant impact on human and animal health, which should be given the highest weight coefficient of 5 in this article.…”

Section: Suitability For Drinkingmentioning

confidence: 99%

Suitability assessment of deep groundwater for drinking, irrigation and industrial purposes in Jiaozuo City, Henan Province, north China

Shi

Liu

et al. 2013

Chin. Sci. Bull.

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Groundwater has been a major natural resource for human consumption in north China. It is necessary to appreciate the suitability of deep groundwater for drinking, agricultural irrigation, and industrial uses in this region. To this end, a total of 47 groundwater samples were collected from the study area; by comparing the concentrations of different hydrochemical variables with quality standard values, the variable fuzzy set (VFS) was applied to calculate the groundwater quality index (GQI) for various purposes, respectively. Afterward GQI spatial distribution maps were constructed using a geographic information system (GIS) tool to delineate spatial variations of groundwater quality. In this case study, the GQI spatial distribution maps reveal that the areas covered by "Maximum Permissible" groundwater for varying purposes (drinking, irrigation, and industrial) is 1377.2; 2354.7; and 3854.8 km 2 , respectively. The groundwater in the eastern part of the study area is suitable for drinking, with the southwestern region as the irrigation water source; the entire study area is acceptable for use in industrial, except the western part of Jiaozuo City. Therefore, the GQI spatial distribution maps can provide useful information for non-technical decision makers for better sustainable groundwater resources management.drinking water, quality, irrigation, spatial distribution map, variable fuzzy set Citation:Shi J S, Ma R, Liu J C, et al. Suitability assessment of deep groundwater for drinking, irrigation and industrial purposes in

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Concentrations of nitrates in drinking water and incidence of gastric carcinomas: First descriptive study of the piemonte region, Italy

Cited by 69 publications

References 8 publications

Impact of clayey soils on nitrate pollution in the groundwater of the lower Vamsadhara River basin, India

Impact of clayey soils on nitrate pollution in the groundwater of the lower Vamsadhara River basin, India

Nitrate Contamination of Drinking Water: Evaluation of Genotoxic Risk in Human Populations

Suitability assessment of deep groundwater for drinking, irrigation and industrial purposes in Jiaozuo City, Henan Province, north China

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