DOI: 10.1016/j.atmosenv.2015.10.021
Scopus记录号: 2-s2.0-84944738162
论文题名: Physico-chemical characterization of total suspended particulate matter over two coastal stations of Antarctica and adjoining ocean
作者: Ali K ; , Trivedi D ; K ; , Sahu S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 122 起始页码: 531
结束页码: 540
语种: 英语
英文关键词: Acidity
; Antarctica
; Chemical ions
; PH value
; TSPM
Scopus关键词: Acidity
; Alkalinity
; Chlorine
; Ions
; Location
; Antarctica
; Maximum concentrations
; Meteorological parameters
; pH value
; Physical and chemical characteristics
; Physico-chemical characterization
; Total suspended particulate matters
; TSPM
; pH
; anion
; cation
; dimethyl sulfide
; sodium
; acidity
; aerosol composition
; anion
; anthropogenic effect
; biogenic emission
; coastal zone
; concentration (composition)
; dimethylsulfide
; pH
; physicochemical property
; phytoplankton
; pollution monitoring
; research institution
; suspended particulate matter
; aerosol
; alkalinity
; Antarctica
; Article
; atmospheric pressure
; boundary layer
; circadian rhythm
; coastal waters
; meteorology
; monitoring
; oxidation
; pH
; physical chemistry
; phytoplankton
; priority journal
; quality control
; sea
; suspended particulate matter
; temperature
; time series analysis
; weather
; Antarctica
; East Antarctica
; Larsemann Hills
; Maitri
; Southern Ocean
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Physical and chemical characteristics of the total suspended particulate matter (TSPM) measured during 11 January-21 March, 2009 and 09 December 2009-09 January, 2010 over two stations of Antarctica (Larsemann Hills and Maitri) and adjoining ocean are investigated. It is found that the concentration of TSPM is low over all the observational locations. Day-to-day variation in the concentration of TSPM is mainly controlled by variation in the weather systems and associated meteorological parameters. Average concentration of TSPM over Larsemann Hills is 7.6 μg/m3 during Jan-Mar 2009 and 2.4 μg/m3 during Dec. 2009-Jan 2010. It is 9.0 μg/m3 over Maitri during Jan-Mar 2009. On excluding the TSPM data of the disturbed weather days during Jan-Mar 2009, the concentration of TSPM is found to be 4.2 μg/m3 over Larsemann Hills and 4.3 μg/m3 over Maitri.The TSPM at all the observational locations is acidic in nature with a maximum pH value of 5.56 at Larsemann Hills. The pH value of TSPM over Maitri is found to be 5.28. The acidic nature of TSPM indicates the absence of sufficient neutralizing alkaline minerals. Among the measured chemical anions Cl- dominates at all the locations except at Maitri where SO4 2- ion shows maximum concentration. The dominant cation is Na+ at all the observational stations. Sizeable fraction of SO4 2- is found at all the observational locations. Abundance of SO4 2- in the atmosphere of Antarctica and its surrounding region is mainly due to emission of dimethylsulfide (DMS) phytoplankton and its oxidation finally to SO4 2- particles by gas-to-particle conversion. The highest concentration of SO4 2- over Maitri is attributed to the contribution from anthropogenic activity at Maitri, in addition to the biogenic SO4 2-. NH4 + plays dominant role in neutralizing the acidic components of the aerosols. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81366
Appears in Collections: 气候变化事实与影响
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作者单位: Indian Institute of Tropical Meteorology, Dr. Homi Bhabha Road, Pashan, NCL Post Office, Pune, India
Recommended Citation:
Ali K,, Trivedi D,K,et al. Physico-chemical characterization of total suspended particulate matter over two coastal stations of Antarctica and adjoining ocean[J]. Atmospheric Environment,2015-01-01,122