Details

Autor(en) / Beteiligte

• Cao, Run-Fang
• Yan, Yu-Long
• Guo, Li-Li
• Guo, Wen-di
• He, Qiu-Sheng
• Wang, Xin-Ming

Titel

Distribution Characteristics of Water-soluble Ions in Size-segregated Particulate Matters in Taiyuan

Ist Teil von

• Huanjing kexue, 2016-06, Vol.37 (6), p.2034

Ort / Verlag

China

Erscheinungsjahr

2016

Quelle

MEDLINE

Beschreibungen/Notizen

• The distributions of size-segregated particles (PM ) and water-soluble ions (WSIs) in Taiyuan were studied from July 2014 to April 2015 by TE-235 aerosol sampling and ion chromatography analyzing. As the results shown, the daily PM level was 173.7 μg·m , which exceeded the Grade Ⅱ limitation value in the Ambient Air Quality Standard (150 μg·m , GB 3095-2012). PM levels varied seasonally, and its were 199.1 and 194.2 μg·m in winter and spring, respectively, which were much higher than those in summer. The PM size-segregated was bimodal distribution for the range of 0-0.95 and 3.0-7.2 μm. The concentration of WSIs was the highest in winter, followed by summer and spring. SO , NO and NH were the main water soluble ions and accounted for 66% to 80% of the total WSIs. SO , K , NH and Cl showed a unimodal distribution at <0.95 μm in all samples, while Ca and Mg showed a bimodal distribution at <0.95 μm and 3.0-7.2 μm. NO showed a unimodal size distribution at <0.95 μm in winter and spring, compared with a bimodal d