نتایج جستجو برای: water chemical contamination

تعداد نتایج: 928472  

2018
Edyta Hewelke Jan Szatyłowicz Piotr Hewelke Tomasz Gnatowski Rufat Aghalarov

The contamination of soil with petroleum products is a major environmental problem. Petroleum products are common soil contaminants as a result of human activities, and they are causing substantial changes in the biological (particularly microbiological) processes, chemical composition, structure and physical properties of soil. The main objective of this study was to assess the impact of soil ...

ژورنال: Medical Laboratory Journal 2015
Ghazanfari, Z, , Karvar, M, , Pouryazdanpanah, N, ,

Abstract Background and objective: Bioindicators of drinking water are always influenced by physical and chemical factors such as turbidity and chlorine.  Considering the assessment of drinking water quality is based on residual chlorine, E.coli, heterotrophic bacteria and turbidity.  We aimed to evaluate the effect of pH, chlorine residual and turbidity on the microbial ...

Journal: :Bulletin of environmental contamination and toxicology 2012
Atul K Singh Sharad C Srivastava Abubakar Ansari Dinesh Kumar Ruchi Singh

Water quality monitoring of Clarias gariepinus culture ponds (n = 27) revealed poor physico-chemical conditions and metal contaminants in fish tissues (n = 324). Human health risk assessment for some heavy metal contamination delineated low risk in general except for Aluminium (Al), Iron (Fe) and Lead (Pb) which accumulated significantly (p < 0.05) high in tissues. Health risks values were 6.3 ...

ژورنال: Medical Laboratory Journal 2015
Aghapour, SM, , Amanidaz, N, , Bay, A, , Zafarzadeh, A, ,

Abstract Background and objective: Bioindicators of drinking water are always influenced by physical and chemical factors such as turbidity and chlorine.&nbsp; Considering the assessment of drinking water quality is based on residual chlorine, E.coli, heterotrophic bacteria and turbidity.&nbsp; We aimed to evaluate the effect of pH, chlorine residual and turbidity on the microbial ...

ژورنال: Medical Laboratory Journal 2015
Dabirzadeh, M, , Davoodi, T, , Hashemi, M, , Pashaie Naghadeh, A, ,

Abstract Background and objective: Bioindicators of drinking water are always influenced by physical and chemical factors such as turbidity and chlorine.&nbsp; Considering the assessment of drinking water quality is based on residual chlorine, E.coli, heterotrophic bacteria and turbidity.&nbsp; We aimed to evaluate the effect of pH, chlorine residual and turbidity on the microbial ...

2012
Rakhi Gangil Ruchi Tripathi Anil Patyal Pankaj Dutta

Aim: The study was carried out to investigate the microbiological quality of packaged drinking water marketed in Jaipur city. Material and Methods: In the present study 'twenty' drinking water samples (15 water bottles and 5 sachets) of different brands purchased randomly, were evaluated to access the water quality on the basis of different bacteriological parameters. Result: Out of twenty, 50%...

Journal: :تحقیقات نظام سلامت 0
قاسم رجایی دانشجوی کارشناسی ارشد، گروه محیط زیست، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران. محمد هادی مهدی نژاد استادیار، عضو مرکز تحقیقات بهداشت محیط، دانشکده پیراپزشکی و بهداشت، دانشگاه علوم پزشکی گلستان، گرگان، ایران سمانه حصاری مطلق دانشجوی کارشناسی ارشد، گروه محیط زیست، دانشکده کشاورزی، دانشگاه بیرجند، بیرجند، ایران

background: during recent years, overpopulation, increase of wastewater, and drop in water tables has led to high concentration of salts in underground water, which is an important environmental pollutant. if concentration of salt in drinking water exceeds the limits, it will be dangerous for health. the aim of this study was to measure physical and chemical parameters in drinking water of rura...

Journal: :Water 2021

Groundwater and surface water contamination is related to the presence of chemical substances, which strongly influence suitability for human consumption as well industrial agricultural uses [...]

Journal: :global journal of environmental science and management 2016
s.a. bapat d.k. jaspal

heavy metals and dyes are major contributors in contamination of water streams. these contaminants enter into our eco- system, thus posing a significant threat to public health, ecological equilibrium and environment. thus a combined discharge of these contaminants results in water pollution with high chemical oxygen demand, biological oxygen demand, color, particulate matter, suspended particl...

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