Calcium, Magnesium, and Nitrate in Drinking Water and Gastric Cancer Mortality

Yang, Chun‐Yuh; Cheng, Ming‐Fen; Tsai, Shang‐Shyue; Hsieh, Yueh‐Ling

doi:10.1111/j.1349-7006.1998.tb00539.x

Cited by 129 publications

(59 citation statements)

References 33 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was reported that there exists an inverse relationship between water hardness and cardiovascular diseases. 20 It may also affect the taste of water due to increase in TDS. 19 Conductivity measures the ability of water to conduct in electrical current, and is directly related to the TDS.…”

Section: Discussionmentioning

confidence: 99%

Spring Water Quality and Human Health: An Assessment of Natural Springs of Margalla Hills Islamabad Zone-III

Batool¹,

Samad²,

Kazmi³

et al. 2018

IJH

View full text Add to dashboard Cite

Water is the earth's most valuable compound that is fundamental for humans as well as all other living forms and seems to be inexhaustible. Unfortunately the outlook for the world's fresh water supply is not very hopeful. Moreover shortage of fresh water throughout the world can be directly attributed to human misuse in the form of pollution. Water is used for number of purposes like drinking, bathing and washing etc. so it must be free from toxic materials for healthy human and aquatic life. Among surface waters, springs' water is usually considered as safe for drinking. In the present study, springs' water of Margalla Hill Zone III Islamabad was assessed to clarify the concern about the quality and safety of this water used for drinking purposes in terms of physico-chemical (color, temperature, pH, odor, turbidity, hardness, TDS, EC, alkalinity, DO, Cl -, NO 2 -, NO 3 2-, SO 4 2-, heavy metals) and microbiological parameters (total Coliform, Pseudomonas aeruginosa, Enterococcus and Staphylococcus auerus). For this purpose, 15 water samples were collected from five different sites of Margalla Hills. Results showed that WHO drinking water standards were exceeded for EC, DO, cadmium, lead and microbiological parameters which may be detrimental for human health if water is consumed on daily basis. All other selected parameters did not exceed WHO drinking water standards and therefore, water from the sampling area does not pose any significant threat to consumer's health.

show abstract

Section: Discussionmentioning

confidence: 99%

Spring Water Quality and Human Health: An Assessment of Natural Springs of Margalla Hills Islamabad Zone-III

Batool¹,

Samad²,

Kazmi³

et al. 2018

IJH

View full text Add to dashboard Cite

show abstract

“…Elevated nitrate concentrations in drinking water can cause methemoglobinemia in infants and stomach cancer in adults (Yang et al, 1998;Knobeloch et al, 2000;Hall et al, 2001). As such, the World Health Organization (WHO) has established a maximum contaminant level (MCL) of 50 mg L −1 NO 3 (WHO, 2004).…”

Section: Introductionmentioning

confidence: 99%

A meta-analysis and statistical modelling of nitrates in groundwater at the African scale

Ouédraogo

Vanclooster

2016

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Contamination of groundwater with nitrate poses a major health risk to millions of people around Africa. Assessing the space-time distribution of this contamination, as well as understanding the factors that explain this contamination, is important for managing sustainable drinking water at the regional scale. This study aims to assess the variables that contribute to nitrate pollution in groundwater at the African scale by statistical modelling. We compiled a literature database of nitrate concentration in groundwater (around 250 studies) and combined it with digital maps of physical attributes such as soil, geology, climate, hydrogeology, and anthropogenic data for statistical model development. The maximum, medium, and minimum observed nitrate concentrations were analysed. In total, 13 explanatory variables were screened to explain observed nitrate pollution in groundwater. For the mean nitrate concentration, four variables are retained in the statistical explanatory model: (1) depth to groundwater (shallow groundwater, typically < 50 m); (2) recharge rate; (3) aquifer type; and (4) population density. The first three variables represent intrinsic vulnerability of groundwater systems to pollution, while the latter variable is a proxy for anthropogenic pollution pressure. The model explains 65 % of the variation of mean nitrate contamination in groundwater at the African scale. Using the same proxy information, we could develop a statistical model for the maximum nitrate concentrations that explains 42 % of the nitrate variation. For the maximum concentrations, other environmental attributes such as soil type, slope, rainfall, climate class, and region type improve the prediction of maximum nitrate concentrations at the African scale. As to minimal nitrate concentrations, in the absence of normal distribution assumptions of the data set, we do not develop a statistical model for these data. The data-based statistical model presented here represents an important step towards developing tools that will allow us to accurately predict nitrate distribution at the African scale and thus may support groundwater monitoring and water management that aims to protect groundwater systems. Yet they should be further refined and validated when more detailed and harmonized data become available and/or combined with more conceptual descriptions of the fate of nutrients in the hydrosystem.

show abstract

“…Nitrate is a common contaminant in groundwater (8) and has been implicated in gastric cancer mortality and other disorders (7,10). Through conversion to nitrite, nitrate is the causative agent of methemoglobinemia in infants.…”

Section: Survey Of Bottled Drinking Water Available In Manitoba Canamentioning

confidence: 99%

Survey of Bottled Drinking Water Available in Manitoba, Canada

Pip¹

2000

Environmental Health Perspectives

View full text Add to dashboard Cite

Calcium, Magnesium, and Nitrate in Drinking Water and Gastric Cancer Mortality

Cited by 129 publications

References 33 publications

Spring Water Quality and Human Health: An Assessment of Natural Springs of Margalla Hills Islamabad Zone-III

Spring Water Quality and Human Health: An Assessment of Natural Springs of Margalla Hills Islamabad Zone-III

A meta-analysis and statistical modelling of nitrates in groundwater at the African scale

Survey of Bottled Drinking Water Available in Manitoba, Canada

Contact Info

Product

Resources

About