Determination Of Selected Heavy Metals In River Mukurumudzi To Establish Potential Contamination From Land Based Activities And Sources
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Determination Of Selected Heavy Metals In River Mukurumudzi To Establish Potential Contamination From Land Based Activities And Sources
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Author : Edwin Mwashinga
language : en
Publisher: GRIN Verlag
Release Date : 2018-05-07
Determination Of Selected Heavy Metals In River Mukurumudzi To Establish Potential Contamination From Land Based Activities And Sources written by Edwin Mwashinga and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-07 with Nature categories.
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
Estimating Combined Loads Of Diffuse And Point Source Pollutants Into The Borkena River Ethiopia
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Author :
language : en
Publisher:
Release Date : 2019
Estimating Combined Loads Of Diffuse And Point Source Pollutants Into The Borkena River Ethiopia written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Heavy Metals In Agricultural Lands Receiving Chemical Sewage Sludges
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Author : Jon Clement Van Loon
language : en
Publisher: Environmental Canada : obtained from Training and Technology Transfer Division (Water), Environmental Protection Service, Environment Canada
Release Date : 1973
Heavy Metals In Agricultural Lands Receiving Chemical Sewage Sludges written by Jon Clement Van Loon and has been published by Environmental Canada : obtained from Training and Technology Transfer Division (Water), Environmental Protection Service, Environment Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Heavy metals categories.
This report reviews existing and newly developed analytical methods for sewage sludge analysis. ft had been stressed earlier that knowledge of the form of metals in waste and environmental samples is of great importance. As a result of this the development of simple equipment and analytical methods to initiate metal speciation has been stressed. Procedures developed earlier and used provisionally have been studied in depth. The mercury method is now acceptable as recorded. The As/Se procedure has been modified as a result of further investigation. Nonflame atomic absorption methods have been developed for silver and vanadium. It is demonstrated that using atomic absorption spectroscopy as a detector does not guarantee a quick solution to metal speciation problems. Sludges can be dry-ashed at 450°C without fear of Joss of cadmium, lead or appreciable amounts of zinc. When aluminum is to be determined, dry-ashing should not be used. Data also make it clear that incineration at temperatures usually employed will release large amounts of arsenic, cadmium, lead, mercury and zinc. A number of sewage sludges were analyzed, and the results are tabulated.
Piggery Farmers Awareness Of The Implications Of The Use Of Aflatoxins Contamination Of Feedstuffs In The Humid Tropics
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Author : Samuel Ekwu
language : en
Publisher: GRIN Verlag
Release Date : 2017-04-10
Piggery Farmers Awareness Of The Implications Of The Use Of Aflatoxins Contamination Of Feedstuffs In The Humid Tropics written by Samuel Ekwu and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-10 with Technology & Engineering categories.
Research Paper (postgraduate) from the year 2012 in the subject Agrarian Studies, , language: English, abstract: This study was conducted to evaluate piggery farmers’awareness of aflatoxins contamination of feedstuffs and its implications in pig production in Nsukka zone. A survey research was conducted using a structured questionnaire which was validated by an agricultural measurement and evaluation experts. The questionnaire was used to collect data from the piggery farmers. The data collected were analyzed using descriptive statistics option ofGenstat computer package (Discovery edition 3). The result of this study revealed that piggery farmers are aware of aflatoxins infestation, but know little about its economic and health implications on pig production and pork consumers. They also indicated that they are adopting various local and technical methods such as avoiding damp environment, sprinkling ashes and saw-dusts on top of the feedstuffs, in order to reduce the incidence of aflatoxins development in the feedstuffs they use to feed their pig stocks. They stated that they were not aware that feeding pigs with aflatoxins contaminated food reminants and feeds poses a serious health risk to both the pigs and pork consumers, as they are interested in minimizing the cost of production rather than the welfare of the pigs and pork consumers. Pigs fed with aflatoxin contaminated feedstuffs, have stunted growth, poor feed intake and liver damage, when consumed by humans cause diseasessuch as liver cancer, kidney and nervous disorders, cirrhosis and mutagenswhich have been proven by researchers. Hence the need to ascertain the extent of piggery farmers’ awareness of toxins, which will serve as an indicator on the level of risks exposure of both pigs and pork consumers in the zone. It was therefore recommended that more awareness should be created to both the crop and livestock farmers on the economic and health implications of aflatoxins in the food chain. Farmers should be strongly encouraged to adopt a good preventive and control strategies both in the field, storage and handling of feeds and feed ingredients in order to avert a possible outbreak of aflatoxicosis if uncheck-mated.
Novel Lexemes In English Variations Sources Stylistic Description
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Author : Natalie Lavrova
language : en
Publisher: GRIN Verlag
Release Date : 2010-04
Novel Lexemes In English Variations Sources Stylistic Description written by Natalie Lavrova and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-04 with categories.
Scientific Study from the year 2010 in the subject English Language and Literature Studies - Linguistics, Moscow State Pedagogical University, language: English, abstract: The present book is a short collection of articles written by the author over the time span of 2009-2010. The topicality of present paper is down to several factors. First, since novel lexemes emerge in the English language on a regular, I would even go as far as to say, on a daily basis, the study, or at least, a comprehensive description of some of them could hardly ever become redundant or superfluous. Second, it constitutes a beneficial task to see how such novel lexemes are distributed over various types of discourse and stylistic strata. Third, it enables one to see which slots in different spheres of human activities are more likely to be filled and which are left gaping.
Processing Of Magnesium Metal Composites Through Stir Casting
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Author : Akshansh Mishra
language : en
Publisher: GRIN Verlag
Release Date : 2017-10-12
Processing Of Magnesium Metal Composites Through Stir Casting written by Akshansh Mishra and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-12 with Technology & Engineering categories.
Scientific Study from the year 2017 in the subject Engineering - Mechanical Engineering, grade: 9.1, SRM University, language: English, abstract: This report presents an overview on the effects of different reinforcements in the magnesium and its alloy, so as to improve their mechanical and metallurgical properties. The morphology of microstructure and its effect on the physical properties of the magnesium is also discussed here. Magnesium matrix composites are potential materials for various applications of aerospace and defense organizations due to their low density, good mechanical and physical properties. The improvement of specific strength, stiffness, damping behavior, wear behavior, creep and fatigue properties are significantly influenced by the addition of reinforcing elements into the metallic matrix compared to the conventional engineering materials.
Environmental Planning And Management
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Author : D.B.N. Murthy
language : en
Publisher: Deep and Deep Publications
Release Date : 2005
Environmental Planning And Management written by D.B.N. Murthy and has been published by Deep and Deep Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Environmental policy categories.
Heavy Metal Contamination Of Water And Soil
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Author : Elham Asrari
language : en
Publisher: CRC Press
Release Date : 2014-02-06
Heavy Metal Contamination Of Water And Soil written by Elham Asrari and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-02-06 with Science categories.
This title includes a number of Open Access chapters. Although adverse health effects of heavy metals have been known for a long time, exposure to heavy metals continues and is even increasing in some areas. Remediating heavy metal contaminated soils and water is necessary to reduce the associated health and ecological risks, make the land resource available for agricultural production, enhance food security, and scale down land tenure problems. This book discusses the causes and the environmental impact of heavy metal contamination. It then explores many exciting new methods of analysis and decontamination currently studied and applied in the field today.
In The Web Of Cultural Transition
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Author : Ann Njenga
language : en
Publisher:
Release Date : 2001
In The Web Of Cultural Transition written by Ann Njenga and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Child care categories.
Includes statistics.
3m Case Analysis Cultivating Core Competences
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Author : Anita Theis
language : en
Publisher: GRIN Verlag
Release Date : 2013-01-14
3m Case Analysis Cultivating Core Competences written by Anita Theis and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-14 with Business & Economics categories.
Essay from the year 2012 in the subject Business economics - Business Management, Corporate Governance, grade: A, Stockholm University (School of Business), course: Global Strategic Management, language: English, abstract: The following report assesses the strategic performance of 3M in 2006 by evaluating its core competence, its competitive advantage and its strategy used to reach 3M’s mission which is defined as “Solving and delivering unique solutions for original equipment manufacturers and mass channel customers”. This analysis brings forward a set of recommendations, consisting of an integrated set of actions which will exploit the company’s competences more efficiently and therefore maximize value and enhance the company’s strategic competitiveness in the future.