Chemical characteristics of principal PM2.5 species in Chongju, South Korea

被引：109

作者：

Lee, HS ^{[1
]}

Kang, BW

机构：

[1] Seowon Univ, Dept Environm Sci, Chongju 361742, South Korea

[2] Chongju Natl Coll Sci & Technol, Dept Environm Ind, Chongju 361719, South Korea

来源：

ATMOSPHERIC ENVIRONMENT | 2001年 / 35卷 / 04期

关键词：

PM2.5 (d(p) <= 2.5 mu m); SO42-; NO3-; NH4+; elemental carbon (EC); organic carbon (OC); urban area; South Korea;

D O I：

10.1016/S1352-2310(00)00267-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Fine particles were collected over four seasons from October 1995 to August 1996 to evaluate the chemical characteristics of principal PM2.5 components in Chongju, South Korea. The annual mean concentrations of PM2.5 (d(p) less than or equal to 2.5 mum), sulfate, nitrate, ammonium, elemental carbon (EC) and organic carbon (OC) were 44.2, 8.22, 3.63, 2.84, 4.44 and 4.99 mu gm(-3), respectively. The sum of the species measured from this study accounted for 50-62% of the PM2.5, mass. Sulfate was the most abundant species and constituted 13-23% of the PM2.5 mass. The EC and OC accounted for 17-28% of PM2.5 The correlation between OC and EC was strong, and the annual mean ratio of OC/EC was 1.12, suggesting that OC measured in the Chongju area may be emitted directly in particulate form as a primary aerosol. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：739 / 746

页数：8

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