Spatial distribution and sea-to-air flux of isoprene concentration in the Yellow Sea and the Bohai Sea in spring
WU Ying-cui1, LI Jian-long1, WANG Jian1, ZHANG Hong-hai1, YANG Gui-peng1,2
1. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China; 2. Laboratory for Marine Ecology and Chemistry and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
Abstract:Isoprene concentrations were determined by gas chromatography with mass spectrum detector (GC-MSD) coupled with purge-and-trap system to study the spatial distribution as well as sea-to-air flux and influencing factors.The results showed that the concentrations of isoprene ranged from 6.02 to 32.91pmol/L in the surface seawater of the Yellow Sea and the Bohai Sea in spring,with an average of (15.39±4.98) pmol/L.The highest concentration of isoprene was found in central Yellow Sea.A positive correlation was observed between isoprene and Chl-a concentrations (R2=0.2529,n=49,P <0.001),suggesting that phytoplankton play an important role in the production and distribution of isoprene.The sea-to-air flux ranged from 0.78 to 192.43nmol/(m2·d),with a mean value of (24.08±30.11) nmol/(m2·d).The study shows that the shelf seas of China might be an important source of isoprene.
吴英璀, 李建龙, 王健, 张洪海, 杨桂朋. 春季黄、渤海中异戊二烯的浓度空间分布与海-气通量[J]. 中国环境科学, 2018, 38(3): 893-899.
WU Ying-cui, LI Jian-long, WANG Jian, ZHANG Hong-hai, YANG Gui-peng. Spatial distribution and sea-to-air flux of isoprene concentration in the Yellow Sea and the Bohai Sea in spring. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 893-899.
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