%0 Journal Article
%T Chloride depletion and mixing state of fine sea salt particles in the atmospheric boundary layer of the Yellow Sea in spring<br>春季黄海边界层内海盐细粒子氯亏损及混合状态研究
%A PANG Chengming
%A WANG Zifa
%A <br>庞成明
%A 王自发
%J 环境科学学报
%D 2011
%I 
%X In order to understand the interaction between sea salt aerosol over the Yellow Sea and the pollutants in the Asia outflow, the fine particles were observed with a C130 airplane of NCAR as part of ACE-Asia in spring of 2001 in the atmospheric boundary layer (ABL) of the Yellow Sea. There were six legs analyzed in this paper (defined as leg 1, leg 2, leg 3, leg 4, leg 5, and leg 6) located all in the ABL of the central parts of the Yellow sea (124.0°E~125.1°E, 34.3°N~36.4°N). The mole ratio and correlation analyses of soluble ion concentrations in the fine particles show that the sodium ion is from sea salt. Chloride depletion analyses indicate that the chloride enrichment in fine sea salt particles is found in the leg 1 and 2, and the chloride depletion is observed in leg 3, 4, 5, and 6. The leg averaged concentration of chloride depletion is 4.2, 5.1, 2.9, and 8.4 nmol·m-3, respectively. The chloride enrichment may be caused by anthropogenic chloride ion in the Asia outflow. The chloride depletion is attributed to reaction between the sea salt aerosol and the acid gases transported from East Asia. The sea salt over the Yellow Sea can change the components of pollutants transported from East Asia. Based on the formation mechanism of internally mixed aerosol, an indirect method is developed to judge the mixing state of fine sea salt particles and calculate the internal mixing ratio. The fine sea salt particles are internally mixed when chloride depletion occurs, and the ratio of the internal mixture can be estimated from the chloride depletion ratio. According to the method, there are internally mixed fine sea salt particles observed in the leg 3, 4, 5, and 6 with leg averaged ratio of internal mixture being 54%, 44%, 33%, and 84%, respectively. Besides reaction time, there should be other factors that can influence the chloride depletion in sea salt, and the mixing state and mixing ratio of fine sea salt particles.
%K ABL of the Yellow Sea
%K sea salt
%K fine particles
%K chloride depletion
%K mixing state<br>黄海边界层
%K 海盐
%K 细粒子
%K 氯亏损
%K 混合状态
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=5A4B8C5BE1AB66CA061FC0F589945628&yid=9377ED8094509821&vid=4AD960B5AD2D111A&iid=38B194292C032A66&sid=70E3F4DEB0172F14&eid=EF9E84B2DA79FF23&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=0