Browsing Chemistry by Issue Date
Now showing items 1-20 of 38
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Study of dissipation and degradation of malathion and Dimethoate from the soil and the pea plant (pisum sativum) Using a radioisotope tracer technique
(Maseno University College (Moi University), 1999)The dissipation and degradation of 14C-malathion {S-l, 2- bis (ethoxy carbonyl) ethyl 0, 0- dimethyl phosphorodithioate} and T'Csdimethoate {O, O-dimethyl S-methyl carbamoyl methyl phosphorodithioate} from the soil and ... -
Study of Dissipation and Degradation of Malathion and Dimethoate from the soil and the Pea Plant (Pisum Sativum) Using a Radioisotope Tracer Technique
(Maseno University, 1999)The dissipation and degradation of 14C-malathion {S-l, 2- bis (ethoxy carbonyl) ethyl 0, 0 dimethyl phosphorodithioate} and T'Csdimethoate {O, O-dimethyl S-methyl carbamoyl methyl phosphorodithioate} from the soil and ... -
Assessement of polycyclic aromatic hydrocarbon(PAH) distribution in sediment and water samples of Winam gulf,Lake Victoria,Kenya
(Maseno university, 2008)Polycyclic aromatic hydrocarbons (PAH) commonly refers to a large class of organic compounds containing two or more fused aromatic rings. They comprise unsubstituted parent PAH and their alkyl-substituted derivatives. ... -
Heavy metal concentrations in sediments, Soil, waters and mosses around Pan African paper mills, Webuye
(Maseno university, 2010)Atomic absorption spectroscopic analysis of soils, sediments, water and mosses in the vicinity of Pan African Paper Mills, Webuye, Kenya has revealed the prevalence of the heavy metals Cu, Zn, Cr, Cd, Fe and Pb in the ... -
The effects of nitrogenous fertilizers on selected physiochemical parameters and heavy metal loads within Nzioa nucleus sugarcane estate farms in western Kenya
(Maseno university, 2010)Continued use of nitrogenous fertilizers and biosolids in farming is known to affect the soil pH of the farms leading to acidic environment that promotes solubility;bioavailability and mobility of heavy metals. In addition, ... -
The effects of zeolite x and y on degradation kinetics of P, P'-DICHLORODIPI-IENYLYTRICIILOROETHANE (DOT) in natural water
(Maseno university, 2010)The study was on degradation kinetics of pesticides in water by zeolites. Pesticides are never target specific and as such, aerial dissipation of pesticides is potentially \ hazardous to man and environmental biodiversity. ... -
Monitoring of carbofuran residues in Laikipia and Isiolo districts in Kenya for ecological risk Assessment
(Maseno university, 2010)Granular carbofuran which was widely used to control agricultural pests in Isiolo and Laikipia districts was also misused by local farmers and pastoralists to kill predators leading to massive deaths of Gyps vultures ... -
Phytochemical evaluation of Elaeodendron buchananii stem Bark for microbial activities
(Maseno university, 2010)Public health is under serious threat due to wide array of emerging and re-emerging infections as a result of resistance of microorganisms to first line drugs. Despite the wide availability of clinically useful antifungal ... -
Kinetic Studies of Malathion Dissipation Degradation in Lake Victoria Water in the Presence of Zeolite
(Maseno University, 2011)Malathion is an organophosphorus pesticide widely employed in controlling pests in agriculture, household, stored grains, greenhouse, forestry and public health. Malathion usually adsorbs on soilsand through surface ... -
Influence of area of production, nitrogenous Fertilizer rates and plucking intervals on the \ production of fatty acids in clonal tea '(Camellia sinensis (L.O) Kuntze) leaves
(Maseno university, 2011)Tea, Camellia sinensis, is widely grown in the highlands of Kenya for manufacture of mainly black tea. The most costly inputs in tea cultivation are nitrogenous fertiliser and plucking which are key determinants of yield ... -
Indoor levels of polycyclic aromatic Hydrocarbons from wood burning in Rural houses in western Kenya
(Maseno university, 2011)Western Province of Kenya has prevalence of grass-roofed traditional houses, where cooking is done in open fire places using various biomass types, which leads to accumulation of soot under the roofs. Polycyclic Aromatic ... -
Assessment of polycyclic aromatic hydrocarbons in .Fish, meat and the effect of cooking on their Concentrations in meat as sources of human exposure in Winam gulf region of Lake Victoria
(Maseno university, 2011)Polycyclic Aromatic Hydrocarbons are of concern m environmental chemistry because they are known or suspected carcinogens and/or toxicants. Fish is a major indicator of the existence of PARs in aquatic environment and ... -
Effects of Some Land Use Practices On Water Physico-Chemical Parameters, Nutrient Loads and Heavy Metal Concentrations In Water and Sediments Along the Malta River
(Maseno University, 2014)ABSTRACT Riverine land uses are among factors that influence water quality. Fresh water quality is nerlining and coDseqnemtiy imparting on the ecological heab:h of the ecosystem. Within the Mara River Basin as a result ... -
Effects of Anthropogenic Activities on Selected Water Quality Parameters in Spring Water and Sediments along Amala and Nyangores Tributaries in the Mara River Basin, Kenya
(Maseno University, 2014)Replacing natural forests with commercial crops and/or other small scale farming activities including human settlement have several environmental impacts. The land LISt' practices have the potential of contaminating aquatic ... -
Assessment of Levels of Selected Metal Pollutants in Aquatic Samples Along Lake Victoria Shoreline From Rivers Kisat to Kisian Discharge Points, Kenya
(Maseno University, 2015)Lake Victoria is the largest freshwater and fishery lake in Africa. Kisumu City on the Winam Gulf has industrial activities that dispose of their effluents into the lake which may contaminate aquatic species thus threatening ... -
Effects of rates and split applications of nitrogen fertilizer on soil and leaf nutrients levels, quality and harvesting age of Ratoon crop of two Sugarcane varieties in Western Kenya
(Maseno University, 2015)Sugarcane is the third most important commodity crop in Kenya after tea and coffee. The productivity of the crop has been declining despite existence of recommended agronomic and cultural practices and opening new sugarcane ... -
Evaluation of chlorpyrifos ethyl elisa kit and assessment of use and spatial distribution and temporal trend of selected organophosphate and carbamate pesticides residues in water, sediment and fish from lake Naivasha
(Maseno University, 2015)Heavy seasonal use of specific organophosphate and carbamate in the catchment area of Lake Naivasha is a potential cause of pollution of sediment, water and fish in the lake. However, there is lack of data on the potential ... -
Fate studies of chlorsulfuron in selected soils within the Mara river basin of Kenya
(Maseno University, 2016)ABSTRACT Chlorsulfuron is a sulfonylurea herbicide used to control broadleaf and grass weeds in wheat farms within the Mara River Basin. It is assumed to be environmentally safe due to low application rates, relatively ... -
Dissipation Rate of Chlorpirifos Within Mosquito Larvae Habitats In Maseno and its Activity Against the Larvae Relative to Dichlorodiphenyltrichloroethane
(Maseno University, 2016)ABSTRACT Despite more than a century of efforts to eradicate and control malaria, it still remains a major risk to public health and economies of countries in the tropical and subtropical regions of the world. Control of ... -
Relationship between mites infestation levels in Kenyan tea to overhead volatile organic compounds and their variations with seasons, regions and selected agronomic practices
(Maseno University, 2016)Tea (Camellia sinensis) is a major cash crop in Kenya that suffers economic losses due to Brevipalpus phoenicis and Oligonychus coffeae infestations during droughts. Pesticides use on tea is prohibited and pests control ...