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Full-Text Articles in Medicine and Health Sciences
Field Measurements Of Trace Gases Emitted By Prescribed Fires In Southeastern Us Pine Forests Using An Open-Path Ftir System, S K. Akagi, I R. Burling, A Mendoza, T J. Johnson, M Cameron, D W. T Griffith, C Paton-Walsh, D R. Weise, J Reardon, R J. Yokelson
Field Measurements Of Trace Gases Emitted By Prescribed Fires In Southeastern Us Pine Forests Using An Open-Path Ftir System, S K. Akagi, I R. Burling, A Mendoza, T J. Johnson, M Cameron, D W. T Griffith, C Paton-Walsh, D R. Weise, J Reardon, R J. Yokelson
Faculty of Science, Medicine and Health - Papers: part A
We report trace-gas emission factors from three pine-understory prescribed fires in South Carolina, US measured during the fall of 2011. The fires were more intense than many prescribed burns because the fuels included mature pine stands not subjected to prescribed fire in decades that were lit following an extended drought. Emission factors were measured with a fixed open-path Fourier transform infrared (OP-FTIR) system that was deployed on the fire control lines. We compare these emission factors to those measured with a roving, point sampling, land-based FTIR and an airborne FTIR deployed on the same fires. We also compare to emission …
Trace Elements And Metal Pollution In Aerosols At An Alpine Site, New Zealand: Sources, Concentrations And Implications, Samuel K. Marx, Karen S. Lavin, Kimberly J. Hageman, Balz S. Kamber, Tadhg O'Loingsigh, Grant H. Mctainsh
Trace Elements And Metal Pollution In Aerosols At An Alpine Site, New Zealand: Sources, Concentrations And Implications, Samuel K. Marx, Karen S. Lavin, Kimberly J. Hageman, Balz S. Kamber, Tadhg O'Loingsigh, Grant H. Mctainsh
Faculty of Science, Medicine and Health - Papers: part A
Atmospheric aerosol samples were collected at a remote site in New Zealand's Southern Alps. Collected samples were found to be a mixture of New Zealand and Australian sourced sediment, using their trace element signatures. Aerosol concentrations and the relative contribution of different sources was found to be a function of specific air-mass trajectories influencing the study site, dust entrainment rates in source areas and rainfall. Results show that Australian dust is a major source of particulate matter in New Zealand, particularly in remote alpine locations; however, locally derived dust is also important. Metal pollutants, including Pb, Cu and Sn, were …
Factors Governing The Rejection Of Trace Organic Contaminants By Nanofiltration And Reverse Osmosis Membranes, Hai Q. Dang, Long D. Nghiem, William E. Price
Factors Governing The Rejection Of Trace Organic Contaminants By Nanofiltration And Reverse Osmosis Membranes, Hai Q. Dang, Long D. Nghiem, William E. Price
Faculty of Science, Medicine and Health - Papers: part A
This study aimed to elucidate key factors governing the rejection of trace organic contaminants (TrOCs) by nanofiltration (NF) and reverse osmosis (RO) membranes. The rejection of 16 selected hydrophilic and hydrophobic TrOCs by an NF and an RO membranes was evaluated at different solution pH values using a cross-flow NF/RO filtration system. An analytical technique consisting of solid phase extraction followed by gas chromatography and mass spectrometry detection was used for the analysis of the TrOCs. In general, rejection increased in the order of decreasing membrane permeability, increasing molecular weight (or equivalent molecular width) of the TrOCs, and increasing hydrophilicity. …