Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 57 for “"Organochlorine"”.
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Biomonitoring organochlorine and cholinesterase inhibiting insecticide in eastern Iowa streams
1 PDF file (xiii, 217 pages)
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Organochlorine Pesticide Residue in Fish Fillets From Lake Springfield, Missouri
A method for extracting organochlorine pesticides from fish fillets using solid phase extraction techniques was developed. Fish fillets (10 and 20 g) were ground with 20 g of anydrous sodium sulfate. This mixture was then extracted with 100 mL of hexane, filtered and passed through a Chem Elut …
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Ecological Magnification of Persistent Organochlorine Pesticides in an Illinois Watershed
… and ecological magnification of selected organochlorine pesticides in aquatic organisms of the Lake Decatur watershed in central Illinois were determined in this study. A review of the use of persistent organochlorine pesticides in the United States and the study area is provided. Samples …
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The kinetics and mechanisms of the gas-phase pyrolysis of environmentally significant organochlorine compounds
… the mechanisms of the gas-phase pyrolyses of organochlorine compounds of environmental interest, more particularly those that might have a bearing on or be involved in incineration processes, either through inclusion in domestic waste or as components of toxic waste materials.<br/><br/>To …
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Supercritical fluid extraction of polychlorinated biphenyls and organochlorine pesticides from mussel tissue (Mytilus edulis)
… one polychlorinated biphenyls (PCBs) and eight organochlorine pesticides (OCPs) from freeze dried mussel tissue is discussed, demonstrated, and compared to traditional Soxhlet extractions. The aim of this study was to determine the efficacy of SFE for the extraction of these lipophilic compounds …
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A Multi-Scale analysis of organochlorine pesticide contamination in raptor populations: research effort, historical trends, and current concentrations
… many decades. The environmental consequences of organochlorine pesticides, particularly Dichlorodiphenyltrichloroethane's (DDT) were made famous by Rachel Carson's book, Silent Spring in the early 1960s. Their impacts on environmental and human health were subsequently widely recognised and led …
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Potential use of ultrasound in chemical monitoring
… using ultrasonic processors to decompose organochlorine compounds into ions which could be detected using a specific ion electrode as a screening method for organochlorine pollutants. Changes in chloride, conductivity, and pH were measured using commercially available equipment before and …
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Rapid reductive dechlorination of environmentally hazardous aromatic compounds and pesticides
Organochlorine compounds, such as polychlorinated biphenyls (PCBs), pentachlorophenol (PCP), p,p'-DDE and Toxaphene, have been widely used in industry and agriculture for more than fifty years. Although they have served their purpose very effectively and at low cost, many of these compounds have …
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The determination of β-endosulfan and endosulfan sulfate in human serum with dialkylphosphate metabolites as urinary markers using LC-MS/MS electrospray ionization
… applied to determine agricultural exposure to organochlorine and organophosphorus pesticides using different biological matrices as reference sources. The method that was validated for the quantification of the organochlorine compounds was used to simultaneously determine β-endosulfan [6, 7, 8, …
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Studies on the excretion of pesticides in human milk as a means of investigating exposure and assessing the risk to infants in Indonesia
Humans bioaccumulate organochlorine pesticides throughout their lifetime due to the global environmental presence and physiochemical properties of these compounds, however, monitoring the current and lifetime exposure of the population to these compounds is complex. The collection and analysis of …
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Assessment of pesticide concentrations in environmental and biological parameters from two Kenyan Rift Valley Lakes
… of pesticide contamination...Globally, most organochlorine pesticides have been banned, but endosulfan, HCH and methoxychlor are widely used in Kenya, while aldrin, dieldrin and lindane are restricted and DDT, endrin, and heptachlor banned. Studies examining residue levels of these harmful …
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Determining The Occurrence, Fate, And Effects Of Pesticide Mixtures Using The Aquatic Amphipod Hyalella Azteca
… However, many legacy pesticides, such as organochlorine, and some current-use pesticides, such as pyrethroids, are strongly hydrophobic, and suspended or bedded sediments, rather than water, would generally be more appropriate matrices for monitoring. Yet sampling of sediments and …
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A study of the distribution of selected anthropogenic micropollutants in the seawater of Dublin bay
… on the ubiquity and on the harmful effects of organochlorine compounds, in particular organochlorine pesticides. In the 1970s the malign effect that xeno-estrogenic material could have on biological systems became apparent and the increasing incidence of such polluting material, frequently …
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Physicochemical studies of the inclusion of selected agrochemicals in cyclodextrins
… included: the phenylurea herbicide, cycluron; an organochlorine insecticide, endosulfan; an organophosphorus insecticide, fenitrothion; and the chloroacetanilide herbicide, acetochlor. A study of CD complexation with these pesticides in solution as well as in the solid state was undertaken. A …
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Determinants and Developmental Consequences of Organic Contaminant Uptake in Nestling Insectivorous Birds
… investigated potential toxicological effects of organochlorine pollutants including polychlorinated biphenyls (PCBs) and dichlorodiphenyl trichloroethane (DDT) and their metabolites on wildlife with passerine nestlings as model organisms. For organisms at higher trophic levels, especially …
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Growth, survivability, and reproductive effects of pulse-dosed endosulfan on jordanella floridae (florida flagfish) over one complete life-cycle
Endosulfan is a commonly used organochlorine in Durham Region, Ontario Canada which has known toxic effects on non-target organisms including fish. This research investigated the effects of endosulfan on Florida flagfish (Jordanella floridae), using both continuous and pulse-exposure. The 96 hour …
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