An integrated sampler for shipboard underway measurement of dimethyl sulfide in surface seawater and air
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- An integrated sampler for shipboard underway measurement of dimethyl sulfide in surface seawater and air
- Other Titles
- 표층 해수와 대기중의 DMS를 선상에서 연속관측하는 기술 개발
- Zhang, Miming
Marandino, Christa A.
- Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
- Air; Dimethyl sulfide; Seawater; Shipboard underway measurements; Time-of-flight mass spectrometry
- Issue Date
- Zhang, Miming, et al. 2019. "An integrated sampler for shipboard underway measurement of dimethyl sulfide in surface seawater and air". ATMOSPHERIC ENVIRONMENT, 209(1): 86-91.
- Dimethyl sulfide (DMS), a marine-derived trace gas, can influence atmospheric compositions and has an impact on the global climate. To date, obtaining continuous and coupled shipboard underway measurements of DMS in seawater and air has been challenging. To address this issue, we report a custom-made sampling device based on the purge-and-trap technique. This sampler, in combination with a time-of-flight mass spectrometer (TOF-MS), was successfully utilized to perform coupled shipboard underway measurements of DMS in surface seawater and air around western Antarctica during the 34th Chinese Antarctic Research Expedition from February 2018 to April 2018. The seawater and air streams were continuously introduced into the sampler unit and subsampled every 10？min. The limits of detection (LODs) of DMS in seawater and air were found to be 0.07？nM and 32 pptv, respectively. The variability in the DMS levels in the surface seawater and air can be distinguished and evaluated based on the variations in the DMS peaks. These results demonstrated that the sampling device was effective for consistent, sensitive underway measurements of DMS.
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