نتایج جستجو برای: water chemical contamination

تعداد نتایج: 928472  

pollution as well as a major threat to the health of the citizens due to the advancement at human civilization, technology development, pesticides and chemical fertilizers application, the increasing exploitation of natural resources by the agricultural sector and the increasing usage of fossil energy. Therefore, the aim of this study is evaluation of citizens’ attitude towards water and soil p...

2016
Zhiguo Liu Wei Liao Yan Liu

BACKGROUND Animal wastes are of particular environmental concern due to greenhouse gases emissions, odor problem, and potential water contamination. Anaerobic digestion (AD) is an effective and widely used technology to treat them for bioenergy production. However, the sustainability of AD is compromised by two by-products of the nutrient-rich liquid digestate and the fiber-rich solid digestate...

Journal: :محیط شناسی 0
رضا لاله زاری دانشجوی کارشناسی ارشد آبیاری و زهکشی، دانشگاه شهرکرد سید حسن طباطبائی استادیار گروه مهندسی آب، دانشکده کشاورزی، دانشگاه شهرکرد

it is necessary to care the quantity and quality of the water resources especially in arid and semi-arid regions. shahrekord plain where it has a 551 km2 total area, groundwater is discharging almost 255 mcm annually and uses for drinking and agriculture. the main objective of this study was classification of groundwater quality and comparison with the drinking water standard limits in shahreko...

2016
Nayara Halimy Maran Bruno do Amaral Crispim Stephanie Ramirez Iahnn Renata Pires de Araújo Alexeia Barufatti Grisolia Kelly Mari Pires de Oliveira

Use of groundwater from private wells in households has increased considerably, owing to a better cost/benefit ratio than that of water provided by local utilities for a fee. However, this water is usually untreated, which makes it a vehicle for diseases. Thus, monitoring this water is necessary to ensure its integrity and quality. We aimed to evaluate the physical, chemical, and microbiologica...

Journal: :international journal of environmental research 2011
f. maqbool z.a. bhatti a.h. malik a. pervez q. mahmood

the influence of leachate from open solid waste dumping near salhad stream (abbottabad, pakistan) was investigated to quantify the variations of water quality during august 2007 to april 2008. samples were collected from five different sites located along the salhad stream. two sites were located before the mixing of solid waste leachate with the surface water. one sampling site was of leach...

Agricultural intensification is associated with the use of great amounts of agrochemicals that may result in the accumulation of metals in soils, and –subsequently—agricultural products and food chain. Nowadays, this is a major concern for many Iranian agricultural products, necessitating scientific researches on the issue. Therefore, the present study has been conducted to evaluate the level o...

Rapid population growth and increasing demand for the modern settlement has led to the increase of environmental pollution. Limestone quarry is one among the activities that affect environment and ecosystem in Pemba Island-Zanzibar. Quarrying activities brought an inevitable destruction to the environments ranging from excavation, soil and land degradation, loose of biodiversity and water pollu...

Journal: :Tropical medicine & international health : TM & IH 2004
Jim Wright Stephen Gundry Ronan Conroy

OBJECTIVE To assess the extent and causes of microbiological contamination of household drinking water between source and point-of-use in developing countries. METHODS A systematic meta-analysis of 57 studies measuring bacteria counts for source water and stored water in the home to assess how contamination varied between settings. RESULTS The bacteriological quality of drinking water signi...

Journal: :Journal of contaminant hydrology 2005
J Samuel Arey Philip M Gschwend

Continuing modifications of fuels like gasoline should include evaluations of the proposed constituents for their potential to damage environmental resources such as subsurface water supplies. Consequently, we developed a screening model to estimate well water concentrations and transport times for gasoline components migrating from underground fuel tank (UFT) releases to typical at-risk commun...

2014

Radiocarbon dating of ground water is used in combination with the primary measurements of classical hydrological and chemical analyses. Radiocarbon dating will produce the best results when it involves multiple measurements or sequential sampling. The most useful data come from these comparisons and not from absolute ages. In the case of multiple measurements, the apparent ages of the ground w...

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