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Measurement and analysis of ambient air particulates and ionic species for composition and concentration studies at the western coast of central Taiwan

Department of Internal Medicine, Kuang Tien General Hospital, Shalu, Taichung 433, Taiwan; Department of Environmental Engineering, Hungkuang University, Sha-Lu, Taichung 433, Taiwan

GC Fang

Department of Internal Medicine, Kuang Tien General Hospital, Shalu, Taichung 433, Taiwan; Department of Environmental Engineering, Hungkuang University, Sha-Lu, Taichung 433, Taiwan gcfang{at}sunrise.hk.edu.tw

IC Lin

Department of Internal Medicine, Kuang Tien General Hospital, Shalu, Taichung 433, Taiwan; Department of Environmental Engineering, Hungkuang University, Sha-Lu, Taichung 433, Taiwan

TY Chou

Department of Internal Medicine, Kuang Tien General Hospital, Shalu, Taichung 433, Taiwan; Department of Environmental Engineering, Hungkuang University, Sha-Lu, Taichung 433, Taiwan

Air-polluting aerosol samples consisting of total suspended particulates, coarse particulates (>2.5~10 µm in diameter), fine particulates (<2.5 µm in diameter), and ionic species were collected from March 2004 to January 2005 at the western coast of central Taiwan. Statistical methods such as nonparametric test and T statistical analysis were also employed to distinguish the variation difference for pollutants among four seasons in this study. Seasonal variation of ionic species SO₄^2– in the total suspended particulates and fine particulates shows that higher composition was observed among four seasons. The results of T statistical analysis revealed that the concentrations of ionic species NO₃^– showed no significant changes in coarse and fine particulates among the four seasons. In addition, the results also revealed that the concentrations of ionic species Na⁺ showed no significant changes in coarse and fine particulates in the seasons of spring and autumn at the western coast of central Taiwan.

Key Words: ionic species • Spearman • total suspended particulate • T statistic

Toxicology and Industrial Health, Vol. 24, No. 3, 137-145 (2008)
DOI: 10.1177/0748233707084603


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