[Dimethylsulfide emission in Qingdao near-shore waters and atmospheric dimethylsulfide concentration variation].
To investigate the emission of dimethylsulfide in near-shore waters seriously disturbed by human activities in China, using the solid absorption-desorption and cryogenic preconcentration method, sampling and analysis of seawater and atmospheric DMS in Qingdao near-shore waters were carried out during 2001-2002. The results showed that the spatial distribution and seasonal variation of seawater DMS concentrations and sea-air fluxes were evident. In summer, the average of seawater DMS concentrations was highest, amounting to 1169.47 ng x L(-1) and lowest in spring, only 226.99 ng x L(-1). The obvious concentration gradient in estuarine, landscape and Olympic Game areas were observed in summer, but in spring and autumn is not so evident. Sea-air flux of DMS was mainly determined by seawater concentration, therefore the sea-air flux coincided with seawater concentration. Average atmospheric DMS concentration was higher in the summer (256.44 ng x m(-3)) and lower in the autumn (195.64 ng x m(-3)). The diurnal variation of atmospheric DMS was discussed in paper.
State Key Joint Laboratory of Environmental Simulation and Pollution Control, Department of Environmental Sciences, College of Environmental Sciences, Peking University, Beijing 100871, China.
Qi-ju
QJ
Ma
Min
M
Hu
Xu-dong
XD
Tian
Ling-li
LL
Liu
Tong
T
Zhi
D000393:Air Pollutants / Q000032:analysis*; D002681:China; D009792:Oceans and Seas; D010839:Phytoplankton / Q000378:metabolism; D013440:Sulfides / Q000032:analysis* / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000032:analysis*
D000393:Air Pollutants; D013440:Sulfides; D014874:Water Pollutants, Chemical; C004784:dimethyl sulfide