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70 results for “Contaminants”
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Research ArticleOpen accessIn the abstractVitamin E Mitigates Chronic Chlorpyrifos-Induced Oxidative Changes in Pituitary Glands and Testes in Wistar RatsM. Shittu, J. O. Ayo, S. F. Ambali et al.Problem statement: The sperm counts of men have declined by about 50% in the last few decades. The contribution of environmental contaminants to this decline cannot be overemphasized. Pesticide is one of the most pervasive environmental chemical contaminants that have been of increased use due to the compelling need to feed the ever-growing world human and animal population and protect … …American Journal of Applied Sciences, Vol. 9, Issue 1 · 19 Nov 2011 · 7,309 accessesView PDFCite
Research ArticleOpen accessIn the abstractSorption of Phenols: Influence of Groundwater pH and of Soil Organic Carbon ContentSilvia Fiore, Maria Chiara ZanettiProblem statement: Physical and chemical properties of soil, groundwater and pollutants deeply influenced the type and the strength of sorption phenomena involving hydrophobic organic contaminants: Soil fraction of organic carbon (foc) and cation exchange capacity, groundwater pH and pollutants hydrophobicity were with undoubtedly the predominant issues. Approach: In this study an experimental study of the sorption of phenol and 2-nitrophenol … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 7,007 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Assessment of Metals (Pb and Cu) Contamination in Bottom Sediment from South China Sea Coastal Waters, MalaysiaM. C. Ong, B. Y. KamaruzzamanProblem statement: The accumulation of metal contaminants in sediments can pose serious environmental problems to the surrounding areas. Trace metal contamination in sediment could affect the water quality and the bio-assimilation and bioaccumulation of metals in aquatic organisms, resulting in potential long-term implications on human health and ecosystem. Approach: About 154 bottom sediment samples were collected using Smith McIntyre in … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 7,991 accessesView PDFCite
Research ArticleOpen accessIn the abstractFenton Process for the Degradation of Methylene Blue using Different Nanostructured CatalystsMaría del C Cotto-Maldonado, José Duconge, Carmen Morant, Francisco MárquezIn many places of the world, water is a scarcity resource. The possibility of reusing water increases the relevance of developing different water treatment methods. The goal of this research was to determine if the photo-Fenton processes are efficient for the degradation of organic compounds, as a possible alternative for wastewater treatment. In order to carry out this study, different … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 19 Jul 2017 · 8,295 accessesView PDFCite
Research ArticleOpen accessIn the abstractUsing Permeable Reactive Barriers to Remediate Heavy Metal-Contaminated Groundwater through a Laboratory Column ExperimentSomean Yin, Gemunu Herath, Sokchhay Heng, Senajith KalpageRecently, groundwater sources are being polluted by various activities such as agriculture, livestock, decentralized wastewater treatment systems and acid rain. Groundwater can also be polluted by landfill leachate, sewage, mine tailings, non-engineered deep well disposal of liquid waste and seepage from industrial waste lagoons. There are many studies reported contaminated groundwater remediation using Permeable Reactive Barrier systems (PRBs) and many … …American Journal of Environmental Sciences, Vol. 13, Issue 2 · 12 Mar 2017 · 8,761 accessesView PDFCite
Review ArticleOpen accessIn the abstractCorrelation of Biodiversity of Algal Genera with Special Reference to the Waste Water Effluents from IndustriesRitu Singh Rajput, Sonali Pandey, Seema BhadauriaPollution is the introduction of contaminants, which cause adverse change, into the natural environment and mainly from external inputs like sewage, waste from industries, oil spills and agricultural use of pesticides. Anthropogenic activity-reflected in the use of toxic metals and organic pollutants-has increased levels of soil contamination and damage to aquatic systems. Ecosystems maintain water quality and withstand pressure from … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 4 · 9 Dec 2016 · 8,608 accessesView PDFCite
Research ArticleOpen accessIn the abstractSelected Heavy Metals as Indices of Atmospheric Pollution in African Locust Bean (Parkia biglobosa) Tree BarksOlatunde S. Olatunji, Oladele Osibanjo, Olalekan S. Fatoki et al.Metallurgical industries are pollution “hot spots” for emission of dust, particulates of heavy metals and gaseous contaminants at levels that can be injurious to man and environment. The atmospheric levels of selected heavy metals around Ajaokuta Steel Company Nigeria were assessed using barks of Parkia biglobosa trees. The tree barks were randomly collected during wet and dry seasons, sorted and … …American Journal of Environmental Sciences, Vol. 12, Issue 1 · 2 Mar 2016 · 7,810 accessesView PDFCite
EditorialOpen accessIn the abstractANTIBIOTIC RESISTANCE: A FRIGHTENING HEALTH DILEMMARuchi Tiwari, Kuldeep DhamaByarugaba, D.K., 2004. Antimicrobial resistance in developing countries and responsible risk factors. Int. J. Antimicrob. Agents, 24: 105-110. DOI: 10.1016/j.ijantimicag.2004.02.015 Cirz, R.T., J.K. Chin, D.R. Andes, V. de Crécy-Lagard and W.A. Craig et al., 2005. Inhibition of mutation and combating the evolution of antibiotic resistance. PLoS Biol., 3: e176-e176. DOI: 10.1371/journal.pbio.0030176 Dhama, K., S. Chakraborty, Mahima, M.Y. Wani and A.K. … …American Journal of Pharmacology and Toxicology, Vol. 9, Issue 3 · 26 Sep 2014 · 10,774 accessesView PDFCite
Research ArticleOpen accessIn the abstractGEOPHYSICAL AND LABORATORY STUDIES OF THE SPREAD AND QUALITY OF THE ODUKPANI LIMESTONE DEPOSITT. E. Chidomerem, A. E. Akpan, I. O. AkpanThe Odukpani limestone deposit has been investigated using geophysical and laboratory techniques with the aim of generating information on its spread and quality. Information generated from the analyses of twenty-six Vertical Electrical Soundings (VES) and core drilling data were used in the study. The VES data were acquired in both grid and random patterns in the immediate area of the … …American Journal of Environmental Sciences, Vol. 10, Issue 4 · 20 Jun 2014 · 7,097 accessesView PDFCite