Chemical indicators of sulfate sensitivity to nitrogen oxides and volatile organic compounds

Indoor Volatile Organic Compounds and Chemical Sensitivity Reactions

Studies of unexplained symptoms observed in chemically sensitive subjects have increased the awareness of the relationship between neurological and immunological diseases due to exposure to volatile organic compounds (VOCs). However, there is no direct evidence that links exposure to low doses of VOCs and neurological and immunological dysfunction. We review animal model data to clarify the rol...

Simultaneous Removal of Nitrogen Oxides and Volatile Organic Compounds in Fungal Vapor-phase Bioreactors

Recent studies have shown that vapor-phase bioreactors containing the fungus Exophiala lecanii-corni can remove nitric oxide (NO) and volatile organic compounds efficiently from waste gas streams. However, when NH4 accumulates in the bioreactor, the NO removal efficiency abruptly drops to 20 %. To achieve high NOx removals in the bioreactors, low NH4 levels must be maintained, or a different ni...

Mathematical Modeling for Volatile Organic Compounds Removal in a Biofilter: Model Validation and Sensitivity Analysis

Surface and boundary layer exchanges of volatile organic compounds, nitrogen oxides and ozone during the GABRIEL Campaign

We present an evaluation of sources, sinks and turbulent transport of nitrogen oxides , ozone and volatile organic compounds (VOC) in the boundary layer over French Guyana and Suriname during the October 2005 GABRIEL campaign by simulating observations with a single-column chemistry and climate model (SCM) along a zonal 5 transect. Simulated concentrations of O 3 and NO as well as NO 2 photolys...

Chemical characterization of volatile organic compounds on animal farms

More than one hundred volatile organic substances were identified by gas chromatography and mass spectrometry (GC/MS) in the indoor and outdoor air, stable and farm road dust and farm soil samples from two pig and cattle farms in the South Moravian Region. Volatile fatty acids (acetic, propanoic, butanoic and pentanoic acids) and their esters dominated along with aldehydes (butanal, pentanal an...