At an oxygen/methane ratio of 0.55 gmol/gmol and temperature of 950°C, optimized process conditions were obtained with complete methane conversion, maximum carbon monoxide selectivity of 43% and minimum hydrogen/carbon monoxide ratio of 1.3, in absence of water.
Pollutant included 1-hr maximum carbon monoxide (CO) in ppm, 1-hr maximum nitrogen dioxide (NO2) and nitrous oxides (NO x) in ppb, 8-hr maximum ozone (O3) in ppb, 1-hr maximum sulfur dioxide (SO2) in ppb, and five 24-hr average PM2.5 components in μg/m: elemental carbon (EC), organic carbon (OC), nitrate (NO3), ammonium (NH4), and sulfate (SO4).
Pollutants included in the analysis included measures for 1-hr maximum carbon monoxide (CO) in ppm, 1-hr maximum nitrogen dioxide (NO2) and nitrous oxides (NO x) in ppb, 8-hr maximum ozone (O3) in ppb, 1-hr maximum sulfur dioxide (SO2) in ppb, and five 24-hr average PM2.5 components in μg/m: elemental carbon (EC), organic carbon (OC), nitrate (NO3), ammonium (NH4), and sulfate (SO4).
For example, in Cook County, Illinois, 12 of 15 homes audited by the DOE Inspector General after receiving retrofits were found to have substandard work, and 5 of 6 furnace tune-ups had not been correctly performed, allowing the heating systems to either improperly fire or exceed maximum allowable carbon monoxide (CO) emissions.
"That means that if you go away on vacation, you can come back into the home and push the peak level button and it will tell you the maximum level of carbon monoxide you've had since you last turned the unit on," Mr. LeBlanc said.
Methods: Mothers from the National Birth Defects Prevention Study, a nine-state case control study, were assigned 1-week and 7-week averages of daily maximum concentrations of carbon monoxide, nitrogen dioxide, ozone, and sulfur dioxide and 24-hr measurements of fine and coarse particulate matter using the closest air monitor within 50 km to their residence during early pregnancy.
Medicare hospital admissions for CHF were analyzed as a function of the maximum hourly temperature, maximum hourly levels of carbon monoxide (CO), and other criteria pollutants in Chicago for each day of the 4-year period (1986-1989).
To prepare anchored palladium copper complexes characterizing by the maximum catalytic activity towards carbon monoxide oxidation, it is necessary to choose an acid concentration optimal for each specific support [35, 36].
The iHTR method (inductive high temperature carbon reduction) is based on the reduction of silica by carbon with temperatures of up to 1830°C (maximum T 2200°C) to produce carbon monoxide for isotope analysis.
Accumulative yield of carbon monoxide was maximum for oxygen concentration of 9% (dry basis) above which extra oxygen concentration caused further oxidation of the syngas components to decrease the energy content of syngas yield.
The most common reason for attrition during the study period was intercurrent illness, predominantly acute exacerbations of COPD.> -wrap-foot> Abbreviations: FEV1: forced expiratory volume in 1 second, FVC: forced vital capacity, TLCO: transfer factor for carbon monoxide, V̇O2max: maximum oxygen uptake.
