Dry deposition, ionic species measured and source interpretation during seasonal cycle at offshore areas near Taiwan Strait.
The characterization for water-soluble species of total suspended particulate (TSP), dry deposition flux, and dry deposition velocity (V(d)) were studied at Taichung Harbor (TH) and Wuchi traffic sampling sites at offshore sampling site near Taiwan Strait of central Taiwan during March 2004-January 2005. The average concentrations of TSP and dry deposition flux at the TH sampling site were higher than at the WT sampling site during the sampling period. The samples collected were analyzed by a ion chromatography (DIONEX-100) for the ionic species (Cl(-), SO(4)(2-), NO(3)(-), NH(4)(+), Na(+), Ca(2+), and Mg(2+)) analysis. The dominant ionic species for TSP are SO(4)(2-), NO(3)(-), and NH(4)(+) of the total mass of the inorganic ions at both sampling sites. In addition, the results indicated that the NH(4)(+), NO(3)(-) and SO(4)(2-) showed higher concentrations in winter and lower in summer for both TH and Wuchi sampling sites. Statistical methods such as correlation coefficient and principal component analysis were also used to identify the possible pollutant source.
Fang
Guor-Cheng
GC
Air Toxic and Environmental Analysis Laboratory, Hungkuang University, Sha-Lu, Taichung 433, Taiwan. gcfang@sunrise.hk.edu.tw
Wu
Yuh-Shen
YS
Chang
Shih-Yu
SY
Rau
Jui-Yeh
JY
Huang
Shih-Han
SH
D000392:Air Movements; D000393:Air Pollutants / Q000032:analysis*; D004784:Environmental Monitoring; D007477:Ions / Q000032:analysis*; D008962:Models, Theoretical; D012621:Seasons; D013624:Taiwan; D014874:Water Pollutants, Chemical / Q000032:analysis*
D000393:Air Pollutants; D007477:Ions; D014874:Water Pollutants, Chemical