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60 articles for “Environmental Contamination”
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Research ArticleOpen accessAll words, across the recordBaseline Concentrations of 11 Elements as a Function of Land uses in Surface Soils of the Katangese Copperbelt Area (D.R. Congo)Martin T. Mpinda, Tresor N. Kisimba, Theodore M. Mwamba et al.The Katangese Copperbelt Area (KCA) located south-eastern of D.R. Congo presents high concentration of Metal Trace Elements (MTE) due to a rich natural geochemical background and intense mining activities. However, the lack of data on specific baseline concentrations makes it difficult to assess and monitor the environmental quality of soils in the region. In this study, 11 MTE were measured … …American Journal of Environmental Sciences, Vol. 17, Issue 6 · 3 Jan 2022 · 7,126 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordEnvironmental Pollution by Heavy Metals in the Gold Mining Region of East CameroonDallou Guy Blanchard, Ngoa Engola Louis, Abdourahimi et al.The main objective of this study is to assess the level of heavy metals pollution in soil samples collected around gold mines located in Betaré Oya (BO) and Batouri (BA) in Eastern Cameroon. Elemental analysis of soil samples was carried out using Quant´X EDXRF spectrometer. Its sensitivity and accuracy were increased by using the Fundamental Parameter approach for quantification of … …American Journal of Environmental Sciences, Vol. 14, Issue 5 · 7 Nov 2018 · 9,777 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordImpact Assessment of Soil Contamination with Antibiotics (for Example, an Ordinary Chernozem)Yuliya Viktorovna Akimenko, Kamil Shagidullovich Kazeev, Sergey Ilyich KolesnikovThe environmental behavior of antibiotics is not well known and the precise environmental risk assessment is not practical. We studied the impact antibiotics (benzylpenicillin, pharmasin and nystatin) at different concentrations (100 and 600 mg kg-1) on population densities of microorganisms and enzymatic activity of ordinary chernozems in model experiments. The applied doses of antibiotics had definite suppressing effects on population … …American Journal of Applied Sciences, Vol. 12, Issue 2 · 29 Apr 2015 · 7,852 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordBiological Activity of Methyl tert-butyl Ether in Relation to Soil Microorganisms has a Negative Environmental ImpactGholam H.S. BonjarFuel oxygenates are added to gasoline to enhance combustion efficiency of automobiles and reduce air pollution. Methyl tert-butyl ether (MTBE) is the most commonly used oxygenate because of its low cost, high-octane level and ease of blending with gasoline. However, due to its water solubility, high mobility and low biodegradability it leaches in soil subsurface at the speed of groundwater. … …American Journal of Environmental Sciences, Vol. 1, Issue 2 · 30 Jun 2005 · 6,661 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordASSESSING SOIL RESPIRATION AS AN INDICATOR OF SOIL MICROBIAL ACTIVITY IN RECLAIMED METAL CONTAMINATED LANDSKassandre Goupil, Kabwe NkongoloMining, roasting as well as smelting of these elements have caused sulphur dioxide fumigations and metal particulate depositions which have led to various detrimental effects on the overall environmental quality of the Greater Sudbury region. Soil amendment and revegetation within the Greater Sudbury Region were initiated to restore the damage land. Several methods have been used to assess the progress … …American Journal of Environmental Sciences, Vol. 10, Issue 4 · 11 Jul 2014 · 8,099 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordNON-CANCER HUMAN HEALTH RISK ASSESSMENT FROM EXPOSURE TO HEAVY METALS IN SURFACE AND GROUNDWATER IN IGUN IJESHA, SOUTHWEST NIGERIAO. O. Ayantobo, J. A. Awomeso, G. O. Oluwasanya et al.Non-cancer hazard index for inhabitants exposed to heavy metals in surface and groundwater of the abandoned metal mine in Igun-Ijesha area were evaluated. A total of thirty-eight water samples were collected from surface and ground water sources in the study area between September 2012 and February 2013 and the concentrations of heavy metals were determined using Atomic Absorption Spectrophotometer. Non-cancer … …American Journal of Environmental Sciences, Vol. 10, Issue 3 · 10 May 2014 · 8,769 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordMetals in Sediment Cores from Nine Coastal Lagoons in Central VietnamStefania Romano, Cristian Mugnai, Silvia Giuliani et al.Problem statement: After being dramatically hit by war events, Vietnam is presently experiencing a huge economical and social development. However, very few data, relative to pollution levels and trends, are available for the correct management of critical areas such as coastal lagoons, where many economical activities are linked to high value environmental features. Approach: A set of sediment cores from … …American Journal of Environmental Sciences, Vol. 8, Issue 2 · 9 Mar 2012 · 8,587 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordAn Assessment of Mirex Concentrations along the Southern Shorelines of the Great Lakes, USADennis A. Apeti, Gunnar G. lauensteinMirex is a persistent and toxic polychlorinated pesticide that has compromised environmental quality in the Great Lakes region since the 1960s. As a bioaccumulative and carcinogenic compound, mirex at its current levels in Lake Ontario is a concern because of the potential for trophic level transfer and biomagnification in top predators. As a part of the NOAA’s National Status and … …American Journal of Environmental Sciences, Vol. 2, Issue 3 · 30 Sep 2006 · 6,934 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordDelftia Acidovorans Bacteremia in an Intravenous Drug AbuserRocco J. Perla, Eric L. KnutsonDelftia acidovorans (Comamonas acidovorans) is an aerobic, non-fastidious, non-fermentative gram-negative bacillus classified in the Pseudomonas rRNA homology group III that is generally regarded as an environmental organism found in soil and water and as a non-pathogen. We report the first case of systemic D. acidovorans infection in a patient without a long-term immunosuppressive condition where D. acidovorans has been recovered … …American Journal of Infectious Diseases, Vol. 1, Issue 2 · 30 Jun 2005 · 7,307 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordEvaluation of the Water Quality of Dakhla Bay (South Morocco): Qualification and Classification According to the European MethodologyZohra Saad, Orbi Abdellatif, El Khattat Mahmoud, Oudra BrahimDakhlabay has become a center of socio-economic interest in southern Morocco due toits geographical location and its biological richness. During the last decade,several projects have been installed and the exploitation of this ecologicalniche has increased. Faced with this situation, it was necessary to assess thequality of the waters of Dakhla bay and determine its current ecologicalstatus. To do this, the … …American Journal of Environmental Sciences, Vol. 18, Issue 4 · 28 Sep 2022 · 6,808 accessesView PDFCite