Download or read book Determination of Selected Heavy Metals in River Mukurumudzi to Establish Potential Contamination from Land Based Activities and Sources written by Edwin Mwashinga and published by GRIN Verlag. This book was released on 2018-05-07 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2018 in the subject Environmental Sciences, grade: 76, , language: English, abstract: Rivers are the major sources of water being used in cities and its environs. This water may either be treated or untreated. River banks could be very busy, varied activities ranging from farming to industrial activities and other domestic household activities are conducted. The present study aimed at investigating the potential sources of selected heavy metal contaminants in River Mukurumudzi, Kwale County. Water and sediments were sampled in four points along the river impacted by mining, human settlements and agricultural activities for three different seasons. The samples were analyzed for Iron, Lead, Cadmium, Copper and Arsenic using an AAS. Sediment quality was also analysed by the calculation of CF and I-geo values. Interpretation of results was conducted using Minitab statistical software and Excel spreadsheets. The range of metals in water during the dry season was Fe (0.19-0.32) mg/l, Pb, Cu, Cd and As were below the detection limits. The range of metals in water during the short rain was Fe (0.12-1.25) mg/l and BDL for all other analysed metals. The range of metals in water during the long rain season was Fe (0.07-1.82) mg/l, Cu (0.08-0.11) mg/l and BDL for all the other analysed metals. The range of metals in sediments during dry season was Fe (0.13-1.44) ppm, Pb (0.08-0.54) ppm, and BDL for all other analysed metals. The range of metals in sediments during short rain season was Fe (0.23-1.73) ppm, Pb (0.12-0.27) ppm, and BDL for all other analysed metals. The range of metals in sediments during the long rain season was Fe (0.25-2.75) ppm, Pb (0.09-0.34) ppm, Cu (0.10-0.14) ppm, and BDL for all other analysed metals. The CF values for sediments were all

Download or read book Determination of the Types and Concentration of Selected Heavy Metals in the Sediments of the Hackensack River as a Possible Source of Pollution written by Maryanne Mognoni and published by . This book was released on 1977 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heavy Metals Determination in the Rivers in Kuching City and Relationship of the Land use Changes to the Heavy Metals Present in Water written by Grace ak Stephen and published by . This book was released on 2015 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is a source of life, nowadays, it become scarcity due to the anthropogenic activities especially the heavy metals which has polluted the river and become harmful for humans health. A study on concentration of heavy metals of surface water was carried out in three selected land-use; shipping yard/industrial area, residential area and agriculture area. The in-situ data were recorded on-site and water samples were taken and analyzed ex-situ using Atomic Absorption Spectrophotometer (AAS).The result showed that the concentration of heavy metals higher in rivers namely Zn, Fe, As and Al within the range of overall mean of 0.016 mg/l - 0.081 mg/l, 0.196 mg/l - 0.439 mg/l, 0.145 mg/l - 0.397 mg/l and 0.236 mg/l - 0.340 mg/l respectively. The other elements, Pb found high in concentration in Station 1 maybe due to the usage of lead-containing oil in the shipping area.

Download or read book Effect of Mining on Heavy Metals Toxicity and Health Risk in Selected Rivers of Ghana written by George Hadzi and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heavy metal contamination of selected rivers in the mining areas of Ghana was studied. In the study, 44 composite water samples were collected, digested, and analyzed for selected metals using ICP-MS. The average concentrations (mg/L) of heavy metals from the pristine sites ranged from 0.003 (As) to 0.929 (Fe), and the mining sites ranged from 0.002 (Pb) to 20.355 (Fe). Generally, the metals were within the WHO and USEPA acceptable limits except Al, Fe, As, Cr, and Mn. Hazard quotients for ingestion (HQing) and dermal contact from pristine and mining sites ranged from 0.838 (Cr) to 3.00 √ó 10,àí4 (Cu) and from 0.181 (As) to 2.40 √ó 10,àí6 (Cu), respectively. The carcinogenic risks (CRs) for ingestion were within standard limit (10,àí6 to 10,àí4). However, Arsenic showed high CRing above the acceptable limit (1.83¬†√ó¬†10,àí2). The CRs for dermal contact range from 4.22 x 10,àí8 to 1.44 x 10,àí9 (Cr) and from 7.34 x 10,àí8 to 5.65 x 10,àí9 (Pb). Carcinogenic risk values for As in the mining areas raise carcinogenic concerns for the residents in the studied areas. PROMETHEE and GAIA indicate major contribution of the metals from the mining. Multivariate PCA and cluster analysis suggest anthropogenic activities as the major source of the metal toxicity of the mine rivers.

Download or read book Best Practice Guide on Sampling and Monitoring of Metals in Drinking Water written by Adam Postawa and published by IWA Publishing. This book was released on 2012-01-15 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of Metals and Related Substances in Drinking Water Set - buy all five books together to save over 30%! There is increasing concern regarding the presence of metals, particularly heavy metals in drinking water. In addition to the well-known toxic effects of lead, which are discussed at length in the Best Practice Guide on the Control of Lead in Drinking Water (in this series of Guides), the latest WHO guide values for maximum mean concentrations of arsenic, nickel and others in drinking water have been lowered compared to previous versions. European Union, USA and National standards for drinking water have followed the trend based largely on the same toxicological information. There is currently growing interest in the presence of hexavalent chromium in drinking water following its finding in some drinking waters in the USA above the national upper limit for total chromium and research suggesting that this limit needs to be considerably lowered. Some metals, particularly iron and manganese are associated with the production of discoloured (dirty) water in distribution systems and are therefore very important to the production of water with acceptable aesthetic qualities. Others (iron and aluminium) are key to the treatment of raw waters to drinking water standards. In most cases it is not possible to continuously monitor waters for metals and suitable sampling programmes must be designed and carried out to give results representative of the true water quality. The Best Practice Guide on Sampling and Monitoring of Metals in Drinking Water gives guidance on the design and quality control of sampling programmes for metals in Raw waters, in the water treatment works, in the drinking water distribution system and at the consumers tap. It also gives guidance on the analytical methods that can be used for the analysis of metals and quality control of those methods. Sampling programmes on the same water will vary according to the purpose for which they are carried out and the statistical techniques used to determine and design the different types of programme are outlined. Finally some case studies of optimisation of sampling are set out. Best Practice Guide on Sampling and Monitoring of Metals in Drinking Water is a valuable text for scientists, engineers and quality managers working in drinking water supply, laboratory managers and scientists who carry out sampling and analysis, and water industry consultants. It is also an excellent resource for post graduate and research workers in the field of drinking water. Editor: Dr Adam Postawa, AGH University, Krakow, Poland

Download or read book Assessment of Heavy Metal Contamination of the Densu River Weja from Leachate written by and published by GRIN Verlag. This book was released on 2019-12-11 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2012 in the subject Geography / Earth Science - Physical Geography, Geomorphology, Environmental Studies, , language: English, abstract: The effect of leachate seepage from a landfill site on the quality of an urban river, Densu, that is the one of the main sources of water abstracted for treatment for most residents in the Accra Metropolitan area was determined by measuring the levels of heavy metals (As, Pb, Hg, and Cd) in the seepage and in the river itself using Atomic Absorption Spectrometry methods. Heavy metal concentration upstream before leachate contamination was low and within WHO limits. The mean concentrations of arsenic, lead, mercury and cadmium were 0.026mg/l, 0.957mg/l, 0.025mg/l and 0.005mg/l, respectively in the leachate. Mean heavy metal concentration, two hundred metres downstream from the leachate discharge point (where water is drawn for domestic and drinking purpose) was 0.008mg/l for arsenic, 0.393mg/l for lead, 0.001mg/l for mercury while cadmium was not detected. Lead exceeded the WHO acceptable limit of 0.01mg/l for drinking water. Mean levels in the corresponding sediment samples were 0.015mg/kg for arsenic,

Download or read book Determination of Heavy Metals on the Rock River Through the Analysis of Sediments written by Sheldon Landsberger and published by . This book was released on 1990 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Occurrence and Distribution of Selected Heavy Metals Lead Cadmium and Copper in the Ten Mile River System Massachusetts and Rhode Island written by John James Housman and published by . This book was released on 1975 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heavy Metal Pollution in Sediments of the Lo An River and the Poyang Lake Jiangxi Province China written by Nader Ramezani and published by . This book was released on 1994 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relevance of Pre concentration metal Speciation and Determination of Selected Divalent Heavy Metals in Waters Tyume River in the Eastern Cape written by David Meredith Katwire and published by . This book was released on 2010 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heavy Metal Contamination of River Water written by Magaly Genoveva Valencia Avellan and published by . This book was released on 2017 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Source Tracing of Heavy Metals in the Rock River Through Analysis of Sediments written by Brian Mark Golchert and published by . This book was released on 1989 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metal Contamination and Methane Oxidising Bacteria Around a Formerly Industrialised Suburban River written by Swapnika Challa and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Concentration Levels of Heavy Metals and Selected Ions in the Irrigation Water written by Mekonnen Maschal Tarekegn and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irrigable water resources have been challenged by the contamination of heavy metals and unwanted ions that impair plant growth and human health. It impaired the quality of edible fruit & vegetables. The objective of this study was to determine the concentration of heavy metals (Pb, Cd, Cr, and Cu) and selected ions (chloride, Na, Mg, Ca), and to evaluate its suitability for irrigation use. Water samples were collected from three various locations (the upstream, middle stream, and downstream) of the river. Temperature (T), EC, pH, and total dissolved solids (TDS) were tested onsite using handheld multiparameter testing equipment, while the heavy metals (Pb, Cd, Cr, and Cu) and selected ions (Chloride, Na, Mg, and Ca) of the water sample were analyzed using (ICP-OES). ANOVA test was conducted to examine the concentration variations of heavy metals and selected ions between the sampling locations along the river. The concentrations of (Pb and Cd) were found (2.5,Äì3.9), (0.03,Äì0.4) mg/L respectively, and (Cr and Cu) were below the detectible limit of the (ICP-OES) equipment. Cadmium (Cd) was found to be higher than the permissible limit of FAO (0.01mg/L) for irrigation water. There was no significant variation of heavy metals and selected ions between the sampling locations.

Download or read book Possible Sources of Heavy Metal Contamination of Drinking Water Within the Household Distribution System written by David William Moore and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book written by and published by . This book was released on 1936 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Occurrence and Impact of Heavy Metals on Some Water Land Flora and Fauna Resources Across Southwestern Nigeria written by Olufemi Akinnifesi and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid urbanization and industrialization in communities of Nigeria contribute significantly to environmental pollution. Amongst the diversity of these environmental contaminants are heavy metals, a rarely biodegradable and toxic class of metals. Heavy metals are known to be harmful to plants, aquatic species, and subsequently endanger human health through bioaccumulation or biomagnification. Even at low concentrations, heavy metals may affect key soil microbial processes; inhibit plant metabolism and growth. Toxic metals in groundwater affect water quality and potability, and their presence in aquatic systems also facilitate the production of reactive oxygen species that can damage physiological processes in fishes and other aquatic organisms. This chapter highlights the occurrence and impact of heavy metals in different environmental matrices and organisms sampled across some Southwestern states in Nigeria. Various studies including those of the authors found varying levels of heavy metals, especially in concentrations that can imperil ecosystem functions. While results of studies included in this chapter may suggest heavy metal introduction through anthropogenic-urbanization means, the lack of proper implementation of environmental monitoring laws in Nigeria also clearly exist. As such, the mitigation of heavy metals amongst other pollutants demands better home-grown decentralized technologies.