نتایج جستجو برای: contamination index

تعداد نتایج: 446891  

2012
M. A. Addo B. J. B. Nyarko J. K. Gbadago H. A. Affum B. O. Botwe

Heavy metal mobilization in the biosphere by human activities has become an important process in the geochemical recycling of these metals. In this work, 34 soil samples and 29 Tephrosia elegans plants collected in the vicinity of the Diamond Cement Factory, Aflao, Ghana were analyzed for As, Co, Cr, Cu, Mn, Ni, Pb and Zn using energy dispersive XRF. The results of the metal analysis indicated ...

Journal: :Chemosphere 2007
Grigorii M Chuiko Donald E Tillitt James L Zajicek Boris A Flerov Vera M Stepanova Yuri Y Zhelnin Vera A Podgornaya

The Rybinsk Reservoir (Russia) is the largest artificial waterbody in Europe (4550 km2) and provides drinking water for population of the cities located along the coast line. Industrialization in Cherepovets at the northeastern portion of the reservoir, including one of the largest metallurgical facilities in Europe, has resulted in chemical contamination of the reservoir. The extent of polychl...

2010
V. K. Stalin R. Balakumaran

In India, near Chennai, Pammal Panchayat of Tambaram Taluk, there are more than 145 tannery industries functioning since 1945, covering six square kilometre area. To assess the level of chemical contamination of the study area, 3D model Triangulated Irregular Network (TIN) has been generated using GIS software such as Arc Sene, Arc Map. Using the cross validation technique from the software ana...

Journal: :Behavior therapy 2014
Bunmi O Olatunji Chad Ebesutani Jonathan Haidt Craig N Sawchuk

Although core, animal-reminder, and contamination disgust are viewed as distinct "types" of disgust vulnerabilities, the extent to which individual differences in the three disgust domains uniquely predict contamination-related anxiety and avoidance remains unclear. Three studies were conducted to fill this important gap in the literature. Study 1 was conducted to first determine if the three t...

Objective: Metal concentrations in 53 soil samples of Shahr-e-Babak were determined.  Methods: Assessment of enrichment factor and geo-accumulation index revealed higher degree of contamination of Cd, Pb, and Cu in soil samples. Moreover, results of metal fractionation study revealed high amount of Cd and Pb are associated in weakly bounds may lead to environmental risk of these metals.  Result...

Journal: : 2023

Purpose. Knowing and evaluating the degree of pollution caused by elements under study, Statement potential environmental hazards index. in Samarra city-Iraq to know limits mineral pollution, because an increase them is harmful humans. Methodology. The first step starting work for current as modeling was carried out a field tour November each region depth, concentrations heavy approved study (m...

2013
Qiuwen Zhang Xiaohong Yang Yan Zhang Ming Zhong

Groundwater contamination is a serious threat to water supply. Risk assessment of groundwater contamination is an effective way to protect the safety of groundwater resource. Groundwater is a complex and fuzzy system with many uncertainties, which is impacted by different geological and hydrological factors. In order to deal with the uncertainty in the risk assessment of groundwater contaminati...

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