Atmospheric trace gases over China

Journal Article · Sun Jan 31 23:00:00 EST 1982 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00096a014· OSTI ID:5581565

Rasmussen, R A ^[1]; Khalil, M A.K.; Chang, J S

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1. Oregon Graduate Center, Beaverton

Flask sampling, EC/GC, and FID/GC techniques were used to measure the concentrations of CO, CH/sub 4/, CH/sub 3/,Cl, N/sub 2/O, CCl/sub 4/, CH/sub 3/CCl/sub 3/, CCl/sub 3/F, CCl/sub 2/F, and CHClF/sub 2/ in the air over four urban and three rural areas in the People's Republic of China. The results were compared with the concentrations of these trace gases found over urban and rural areas of Oregon, U.S.A. More CCl/sub 4/ and CH were found over Chinese cities than over Oregon cities or over rural China. CO, CH/sub 3/Cl, N/sub 2/O and CH/sub 4/ were all significantly more abundant over rural China than over the clean background site in Oregon. In China rural sources of CO and CH/sub 3/Cl include smoldering combustion in homes, whereas rice paddies and biogas conversion may be sources of CH/sub 4/. Our results show that China may have significant anthropogenic sources of CH/sub 4/, N/sub 2/O, and CCl/sub 4/, all of which are increasing in the atmosphere and may alter the earth's climate if their increases continue for a long time.

• OSTI ID: 5581565
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 16:2; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ALKANES
ASIA
ATMOSPHERIC CHEMISTRY
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMISTRY
CHINA
COMPARATIVE EVALUATIONS
ECOLOGICAL CONCENTRATION
HYDROCARBONS
METHANE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
POLLUTION SOURCES