title: PM2.5particulates and metallic elements (Ni, Cu, Zn, Cd and Pb) study in a mixed area of summer season in Shalu, Taiwan.
abstract: PM2.5has become an important environmental issue in Taiwan during the past few years. Moreover, electricity increased significantly during the summertime and TTPP generated by coal burning base is the main electricity provider in central Taiwan. Therefore, summer season has become the main research target in this study. The ambient air concentrations of particulate matter PM2.5and PM10collected by using VAPS at a mixed characteristic sampling site were studied in central Taiwan. The results indicated that the average daytime PM2.5and PM10particulate concentrations were occurred in May and they were 44.75 and 57.77 µg/m3in this study. The results also indicated that the average nighttime PM2.5and PM10particulate concentrations were occurred in June and they were 38.19 and 45.79 µg/m3in this study. The average PM2.5/PM10ratios were 0.7 for daytime, nighttime and 24-h sampling periods in the summer for this study. This value was ranked as the lowest ratios when compared to the other seasons in previous study. Noteworthy, the results further indicated that the metallic element Pb has the mean highest concentrations for 24-h, daytime and nighttime sampling periods when compared to those of the other metallic elements (Ni, Cu, Zn and Cd). The average mean highest metallic Pb concentrations in PM10 were 110.7, 203.0 and 207.2 ng/m3for 24-h, daytime and nighttime sampling periods in this study. And there were 59.53, 105.2 and 106.6 ng/m3for Pb in PM2.5 for 24-h, daytime and nighttime sampling periods, respectively. Moreover, the results further indicated that mean metallic element Pb concentrations on PM2.5and PM10were all higher than those of the other elements for 24 h, day and nighttime.
authors.affiliation: Department of Safety, Health, and Environmental Engineering, Hungkuang University, Sha-lu, Taichung, 433, Taiwan. gcfang@sunrise.hk.edu.tw.
authors.forename: Guor-Cheng
authors.initials: GC
authors.lastname: Fang
authors.affiliation: Department of Safety, Health, and Environmental Engineering, Hungkuang University, Sha-lu, Taichung, 433, Taiwan.
authors.forename: You-Fu
authors.initials: YF
authors.lastname: Xiao
authors.affiliation: Department of Safety, Health, and Environmental Engineering, Hungkuang University, Sha-lu, Taichung, 433, Taiwan.
authors.forename: Yuan-Jie
authors.initials: YJ
authors.lastname: Zhuang
authors.affiliation: Department of Safety, Health, and Environmental Engineering, Hungkuang University, Sha-lu, Taichung, 433, Taiwan.
authors.forename: Meng-Hsien
authors.initials: MH
authors.lastname: Cho
authors.affiliation: Department of Safety, Health, and Environmental Engineering, Hungkuang University, Sha-lu, Taichung, 433, Taiwan.
authors.forename: Chao-Yang
authors.initials: CY
authors.lastname: Huang
authors.affiliation: Department of Safety, Health, and Environmental Engineering, Hungkuang University, Sha-lu, Taichung, 433, Taiwan.
authors.forename: Kai-Hsiang
authors.initials: KH
authors.lastname: Tsai
mesh_terms: D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D002104:Cadmium / Q000032:analysis; D003300:Copper / Q000032:analysis; D004784:Environmental Monitoring; D007854:Lead / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis* / Q000737:chemistry; D009532:Nickel / Q000032:analysis; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis* / Q000737:chemistry; D011210:Power Plants; D012621:Seasons; D013624:Taiwan; D013997:Time Factors; D015032:Zinc / Q000032:analysis
chemical_list: D000393:Air Pollutants; D019216:Metals, Heavy; D052638:Particulate Matter; D002104:Cadmium; D007854:Lead; D003300:Copper; D009532:Nickel; D015032:Zinc
keywords: Metallic element concentrations; PM2.5; Summer season; Versatile air pollutant sampler