An analytical system enabling consistent and long-term measurement of atmospheric dimethyl sulfide

We describe here an analytical system capable of continuous measurement of atmospheric dimethylsulfide (DMS) at pptv levels. The system uses customized devices for detector calibration and for DMS trapping and desorption that are controlled using a data acquisition system (based on Visual Basic 6.0/...

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Bibliographic Details
Published in:Atmospheric Environment
Main Authors: Jang, S, Park, KT, Lee, K, Suh, YS
Format: Article in Journal/Newspaper
Language:English
Published: PERGAMON-ELSEVIER SCIENCE LTD 2017
Subjects:
REDUCED SULFUR-COMPOUNDS
MARINE BOUNDARY-LAYER
GAS-CHROMATOGRAPHY
BIOGENIC SULFUR
DMS
AIR
AEROSOLS
REMOVAL
ISLAND
OCEAN
Dimethyl sulfide
Climate feedback
Atmospheric monitoring
Arctic Ocean
Arctic
Phytoplankton
Online Access:https://oasis.postech.ac.kr/handle/2014.oak/37596
https://doi.org/10.1016/J.ATMOSENV.2016.03.041
Description
Summary:We describe here an analytical system capable of continuous measurement of atmospheric dimethylsulfide (DMS) at pptv levels. The system uses customized devices for detector calibration and for DMS trapping and desorption that are controlled using a data acquisition system (based on Visual Basic 6.0/C 6.0) designed to maximize the efficiency of DMS analysis in a highly sensitive pulsed flame photometric detector housed in a gas chromatograph. The fully integrated system, which can sample approximately 6 L of air during a 1-hr sampling, was used to measure the atmospheric DMS mixing ratio over the Atlantic sector of the Arctic Ocean over 3 full annual growth cycles of phytoplanlcton in 2010, 2014, and 2015, with minimal routine maintenance and interruptions. During the field campaigns, the measured atmospheric DMS mixing ratio varied over a considerable range, from <1.5 pptv to maximum levels of 298 pptv in 2010, 82 pptv in 2014, and 429 pptv in 2015. The operational period covering the 3 full annual growth cycles of phytoplankton showed that the system is suitable for uninterrupted measurement of atmospheric DMS mixing ratios in extreme environments. Moreover, the findings obtained using the system showed it to be useful in identifying ocean DMS source regions and changes in source strength. (C) 2016 Elsevier Ltd. All rights reserved. 1 1 4 3 scie scopus

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