| Title: | Measurement of air-sea exchange of dimethyl sulfide and acetone by PTR-MS coupled with gradient flux technique |
| Author(s): | Tanimoto H; Kameyama S; Iwata T; Inomata S; Omori Y; |
| Address: | "Center for Global Environmental Research, National Institute for Environmental Studies , 16-2 Onogawa, Tsukuba, 305-8506, Japan" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "We developed a new method for in situ measurement of air-sea fluxes of multiple volatile organic compounds (VOCs) by combining proton transfer reaction-mass spectrometry (PTR-MS) and gradient flux (GF) technique. The PTR-MS/GF system was first deployed to determine the air-sea flux of VOCs in the open ocean of the western Pacific, in addition to carbon dioxide and water vapor. Each profiling at seven heights from the ocean surface up to 14 m took 7 min. In total, 34 vertical profiles of VOCs in the marine atmosphere just above the ocean surface were obtained. The vertical gradient observed was significant for dimethyl sulfide (DMS) and acetone with the best-fit curves on quasi-logarithmic relationship. The mean fluxes of DMS and acetone were 5.5 +/- 1.5 and 2.7 +/- 1.3 mumol/m(2)/day, respectively. These fluxes are in general in accordance with those reported by previous expeditions" |
| Keywords: | Acetone/*analysis Air Pollutants/*analysis Atmosphere/analysis Environmental Monitoring/instrumentation/*methods Equipment Design Mass Spectrometry/methods Pacific Ocean Seawater/*chemistry Sulfides/*analysis Volatile Organic Compounds/*analysis Water Pol; |
| Notes: | "MedlineTanimoto, Hiroshi Kameyama, Sohiko Iwata, Toru Inomata, Satoshi Omori, Yuko eng Research Support, Non-U.S. Gov't 2013/11/14 Environ Sci Technol. 2014; 48(1):526-33. doi: 10.1021/es4032562. Epub 2013 Dec 5" |
