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 51 for “"Human health risk"”.
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MACT Implementation at an Organic Chemical Manufacturing Facility: Human Health Risk Reduction
<p>Human health risk assessments are used by environmental regulatory agencies to determine risk from Hazardous Air Pollutants (HAPs). In this study, the Human Exposure Model (HEM-3) was used to compare the cancer and non-cancer inhalation health effects of a single organic chemical manufacturing …
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Water quality assessment and evaluation of human health risk of drinking water at Thulamela Municipality, Limpopo Province
… of drinking water has been linked to good health outcomes across the world. The aim of this study was to assess physico-chemical, bacteriological, community practices regarding collection and storage of water and evaluation of human health risk characteristics of drinking water supplied by …
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Human Health Risk Assessment for Petroleum Refining Industry of the Remaining Air Toxics after MACT I Emissions Reductions
Inhalation risks on human health for hazardous air pollutants emitted from MACT I petroleum refining industry were determined using EPA HEM-3 Program. Methodology included compiling vertical and fugitive emissions from 2002 National Emissions Inventory for sources inside two facilities in …
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Human health risk assessment of Chemical Spill 4 at the Massachusetts Military Reservation dc by Christine Pilar L. Picazo.
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Toward improved in vitro models for human health risk assessment : mechanisms of short-chain per- and polyfluoroalkyl substances (PFAS) toxicity.
… their integration into the existing chemical risk assessment framework faces obstacles concerning physiological relevance. The overarching objective of this dissertation was to enhance our understanding of the mechanisms underlying the toxicity of short-chain PFAS and to develop improved in …
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Prevalence of bacterial zoonoses in selected trophy hunted species, and the potential of human health risk in Bwabwata National park, Namibia
… animals (wild or domesticated) animals to humans through direct or indirect contact with live animals, their derivatives or contaminated surroundings. The aim of this study is to determine the prevalence of potential bacterial zoonoses in selected trophy hunted species Loxodonta Africana …
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Human health risk assessment of exposure to cadmium, lead and chromium through consumption of well and bottled water in Lusaka district, Zambia.
Water is an essential product for human survival, which all age groups consume and access to safe drinking water is essential to health. Safe drinking water implies that the water does not represent any significant risk to health over a lifetime of consumption, including different sensitivities …
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Human health risk assessment of exposure to cadmium, lead and chromium through consumption of well and bottled water in Lusaka district, Zambia.
Water is an essential product for human survival, which all age groups consume and access to safe drinking water is essential to health. Safe drinking water implies that the water does not represent any significant risk to health over a lifetime of consumption, including different sensitivities …
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Human health risk assessment: recreational use of a brownfield site volunteer Army ammunition plant chemical farmers industries, inc., lease area Chattanooga, Tennessee
… as reported, was found to create an unacceptable risk of excessive blood lead levels in the juvenile population. The IEUBK model was also used to predict soil concentration goals for lead remediation. The lead soil concentration goals were determined based on the statistical probability of a …
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Development of an analytical method to derive hydrophobicity parameters for use as descriptors for the prediction of the environmental and human health risk of chemicals
There is a requirement to assess the safety of chemicals to both 'man' and the environment. Traditionally this was determined through the use of animal testing. However, there is an increased need to develop alternatives to animal testing for the determination of toxicity due to ethical and …
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Soil Metal Distribution in Parks and Playgrounds in Select Municipalities in Metro Vancouver
… analyses were also conducted to determine the human health risk associated with ingestion of metals present in the soil samples. Metal concentrations and the bioaccessibility results suggested that the human health risk associated with accidental ingestion of contaminated soils at parks and …
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Street Dust : implications for stormwater and air quality, and management through street sweeping.
Street dust represents a source of dual potential risk to stormwater and air quality. It has been well-documented that washing of this material to local watersheds can degrade water quality. Studies have also demonstrated that as much as 85% of ambient particulate matter (PM₁₀), exposure to which …
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Concentrations and In Vitro Bioaccessibility of Metals in Soils at Urban Green Spaces in Toronto, Ontario
… of in vitro bioaccessibility data in the human health risk assessment indicated a generally low risk associated with soil ingestion in the examined urban green spaces. The analysis revealed that 7 out of the 75 sampled sites exceeded the CCME guidelines for Ni, Cr, or Pb underscoring the …
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Bioaccessibility of Metals in Soils of Parks and Playgrounds – Fort McMurray, Alberta
… Based on metal concentrations and the IVBA, the human health risk associated with the ingestion of metals in soils in the parks and playgrounds sampled was deemed low.
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Persistent organic pollutants : a risk assessment of Vancouver Island First Nations traditional seafood
Traditional seafoods are integral to the health and culture of coastal First Nations in British Columbia. However, concerns about ocean pollutants have prompted a need for a human health risk assessment which captures consumption, contaminant exposure, and risk assessment. This study builds on …
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Distribution of Metals in Soils in Public Parks in South Calgary
… that may lead to local exceedances. The human health risk associated with incidental ingestion of soil for adults and children was low except for zinc in one park, thus requiring additional sampling and analysis to detect any emerging trends and to safeguard environmental and public …
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Effects of Freshwater Salinization and Associated Base Cations on Bacterial Ecology and Water Quality
… salinization, which is caused by numerous human activities including agriculture, urbanization, and deicing, impacts an estimated 37% of the contiguous drainage area in the United States. High salt concentrations in brackish and marine environments (~1,500 – 60,000 µS cm-1) influence …
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Assessing the environmental risks associated with contaminated sites
A risk assessment strategy considering the impact of chemicals on the whole ecosystem has been developed in order to create a sound and useful method for quantifying and comparing global risks posed by the main different hazardous chemicals found in the environment. This index, called the …
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Development of a Risk Assessment Model to Assess TMDL Implementation Strategies
… each. Although past research indicates that the risk of illness to humans varies by source of fecal contamination, current watershed assessments are developed according to total concentration of indicator bacteria, with all sources weighed equally. A stochastic model using Quantitative Microbial …
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Radionuclide dose assessment of groundwater migrating from the Benham Events, Nts: A solute flux approach
… in sufficient quantities to pose a potential human health risk at the source. To avoid the complex near-cavity chemistry (e.g. solubility of actinides), conservative assumptions were used to estimate a hydrologic source term. By using a two-dimensional stochastic groundwater contaminant …
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