Global ETD Search
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Showing 1 to 6 of 6 for “"PBET"”.
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Physico-chemical Characteristics and Environmental Fate of a Hydrolytically Degradable Cationic Flocculant
… Modified physiologically based extraction tests (PBETs) were developed to estimate the bioaccessibility of poly(PLA4ChMA) and naphthalene; i.e., the fraction of a contaminant solubilized in GI fluids and available for systemic absorption. Extracts were analyzed by 1H-NMR, gravimetry, and …
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Metal bioaccessibility of soils in urban parks in Fredericton and Saint John, New Brunswick
… in vitro physiologically based extraction test (PBET). The risk associated with exposure to selected metals (including As, Ba, Cd, Co, Cu, Pb, Ni and Zn) in soil from the urban parks in New Brunswick studied was fairly low based on the total metals concentrations and bioaccessibility data …
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Bioaccessibility of metals in Toronto city parks
… in-vitro physiologically based extraction test (PBET) were relatively high. Based on linear regression analyses there were no significant relationships between total metals and soil properties such as pH and total organic carbon (TOC). Generally there was negative correlation between metal …
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Microplastics as Contaminant Vectors: Influencing the Bioaccessibility of Naphthalene from Freshwater
… modified physiologically based extraction test (PBET). The effects of aging of MPs on the sorption of naphthalene was also investigated. The sorption kinetics of naphthalene onto MPs followed a pseudo second order model, with external mass transport as the rate-controlling step. Sorption was …
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Bioaccessibility of metals in soils in selected parks in Montreal
The main focus of this study was to determine the concentrations and bioaccessibility of metals in Montreal city parks. Surface soil samples were collected from nine parks located across Montreal city and analyzed for total metals, pH, carbon content and bioaccessibility. Metal concentrations were …
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Mineralogy, geochemistry and health impacts of earth materials consumed by humans in Vhembe District, Limpopo Province, South Africa
… in vitro physiologically based extraction test (PBET) was used. A simplified, two-stage extraction simulating the human stomach (pH 1.2 - 1.7) and intestine (pH 6.3 - 6.5) was developed and applied to 30 geophagic samples. Extractants were analysed by inductively coupled plasma mass spectrometry …