春季黄、渤海中异戊二烯的浓度空间分布与海-气通量

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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.

Key words： isoprene distribution sea-to-air flux Yellow Sea Bohai Sea

Received: 07 August 2017

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	WU Ying-cui
	LI Jian-long
	WANG Jian
	ZHANG Hong-hai
	YANG Gui-peng

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WU Ying-cui,LI Jian-long,WANG Jian等. Spatial distribution and sea-to-air flux of isoprene concentration in the Yellow Sea and the Bohai Sea in spring[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 893-899.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I3/893

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