Sources and transport of 14C on CO2
نویسندگان
چکیده
Sources and transport of ∆C on CO2 within the Mexico City Basin and vicinity S. A. Vay, S. C. Tyler, Y. Choi, D. R. Blake, N. J. Blake, G. W. Sachse, G. S. Diskin, and H. B. Singh NASA Langley Research Center, Hampton, Virginia, USA University of California, Irvine, California, USA National Institute of Aerospace, Hampton, Virginia, USA NASA Ames Research Center, Moffett Field, California, USA Received: 2 March 2009 – Accepted: 5 March 2009 – Published: 17 March 2009 Correspondence to: S. A. Vay ([email protected]) Published by Copernicus Publications on behalf of the European Geosciences Union.
منابع مشابه
Sources and transport of 114C in CO2 within the Mexico City Basin and vicinity
Radiocarbon samples taken over Mexico City and the surrounding region during the MILAGRO field campaign in March 2006 exhibited an unexpected distribution: (1) relatively few samples (23%) were below the North American free tropospheric background value (57±2‰) despite the fossil fuel emissions from one of the world’s most highly polluted environments; and (2) frequent enrichment well above the...
متن کاملInvestigating the Differences in CO2 Emission in the Transport Sector Across Iranian Provinces: Evidence from a Quantile Regression Model
Improving the quality of the environment is a desired goal of any economy. In this regard, given the important role of the transportation sector in the emission of pollutants, policy makers should focus on identifying the factors affecting CO2 emissions in the transport sector. This study examines the factors affecting the differences of CO2 emissions in the transportation sector in Iranian pro...
متن کاملSelective Mass Transport of CO2 Containing Mixtures through Zeolite Membranes
In this work, the main aspects regarding the permeation of mixtures containing CO2 and permanent gases such as H2 , N2 and CH4 through zeolite membranes have been investigated, focusing on the description of the mass transport mechanisms taking place inside the pores. First, a brief overview about the performance of the main zeolite membranes used in gas separation (e.g. DDR, CHA, AEI, FAU, etc...
متن کاملAGI July 40/1
Fitch, Mark D., and Sharon E. Fleming. Metabolism of short-chain fatty acids by rat colonic mucosa in vivo. Am. J. Physiol. 277 (Gastrointest. Liver Physiol. 40): G31–G40, 1999.—To determine the influence of substrate concentration and substrate interactions on short-chain fatty acid metabolism in vivo, a surgical procedure was established. Rats were surgically operated to cannulate a 5-cm segm...
متن کاملIsotopic and geochemical assessment of in situ biodegradation of chlorinated hydrocarbons.
Currently there is no in situ method to detect and quantify complete mineralization of chlorinated hydrocarbons (CHCs) to CO2. Combined isotopic measurements in conjunction with traditional chemical techniques were used to assess in situ biodegradation of trichloroethylene (TCE) and carbon tetrachloride (CT). Vadose zone CHC, ethene, ethane, methane, O2, and CO2 concentrations were analyzed usi...
متن کامل