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A method is described for determining dimethylI sulfide (DMS) in seawater. DMS was first extractedfrom the seawater using organic reagent, then reverse-extracted by 5% HgCl2. In the laboratory DMS wasreleased by concentrated HCI and finally measured by GC-FPD. The limit of detection me O.05 ng ofS. Measurements of DMS along surface transects and on wtital profibe across the EaSt China Sca (Ers)continental sheif showed tha itS conodIations of S in the surface seawater ranged from 64-180 ng/L andthat itS vertical djstribuion was divided into 3 trpes. Model talculations of a stagnant film show a DMSflux of 10.6 umol/m_2d the air-sea inteIha.
DMS was first extracted from the seawater using organic reagent, then reverse-extracted by 5% HgCl2. The the the was DMS wasreleased by concentrated HCI and finally measured by GC-FPD. The limit of detection me O.05 ng ofS. Measurements of DMS along surface transects and on wtital profibe across the EaSt China Sca (Ers) continental sheif showed tha itS conodIations of S in the surface seawater ranged from 64-180 ng / L and athat itS Vertical djstribuion was divided into 3 trpes. Model talculations of a stagnant film show a DMSflux of 10.6 umol / m_2d the air-sea inteIha.