济南市大气细颗粒物水溶性组分及大气传输的研究

山东大学学报(工学版)

济南市大气细颗粒物水溶性组分及大气传输的研究

杨凌霄¹，侯鲁健²，吕波²，王文兴¹，周学华¹，王哲¹,周杨¹,程淑会¹

1. 山东大学环境研究院，山东济南250100； 2. 济南市环境保护监测站，山东济南250014

收稿日期:2006-04-03 修回日期:1900-01-01 出版日期:2007-08-24 发布日期:2007-08-24
通讯作者: 杨凌霄

Study on the water-soluble ions in fine particle matter and the long-range transport of air masses in the city Jinan

YANG Ling-xiao¹,HOU Lu-jian²,LV Bo², WANG Wen-xing¹, ZHOU Xue-hua¹, WANG Zhe¹, ZHOU Yang¹, CHENG Shu-hui¹

1.Environment Research Institute, Shandong University；2. Jinan Environment Protection Monitoring Station

Received:2006-04-03 Revised:1900-01-01 Online:2007-08-24 Published:2007-08-24
Contact: YANG Ling-xiao

摘要/Abstract

摘要： 采用大流量采样器，于2004年11月至2005年9月对济南市城区细颗粒物PM2.5进行了研究测试，对其水溶性离子成分和pH值进行了分析. 结果表明，济南市PM_2.5污染严重，超标率达93.6％，超标倍数为1.20～5.72，呈略酸性. 水溶性离子占PM2.5质量的49.81％，其中SO^2-₄，NH⁺₄，NO^-₃是水溶性离子的主要组分,各占PM_2.5质量的20.88％，12.01％和10.94％，主要以(NH₄)₂SO₄和NH₄NO₃形式存在. 72h后推气流轨迹和簇分析表明起源于济南西北方向（俄罗斯，蒙古国，中国北部）且运动速率较低的气溶胶长距离传输能够加重济南细颗粒污染水平.

关键词: 济南, PM_2.5, 水溶性离子, 后推气流轨迹, 簇分析

Abstract: To investigate the characteristics of the fine particle matter and the long-range air masses transport in Jinan, PM_2.5 samples were collected every two days from November 2004 to September 2005. The major water-soluble ions and pH values of PM_2.5 samples were analyzed. Concentrations of PM_2.5 in Jinan exceed 93.6%. SO^2-₄, NO^-₃ and NH⁺₄ are the dominant ionic species in PM_2.5, respectively accounting for 20.88%, 10.94% and 12.01% of PM_2.5 mass. In the aerosol system, NH⁺₄, SO^2-₄ and NO^-₃ are assumed to mainly exist as (NH₄)₂SO₄ and NH₄NO₃ . PM_2.5 in Jinan is slightly acid compared with the blank. It is shown that the occurrences of high concentrations of PM_2.5 in Jinan have good relationship with the air masses originating from the northwest of Jinan (Russia, Mongolia, north of China) and traveling at low speed.

Key words: Jinan, PM_2.5, water-soluble ions, back trajectory, k-means cluster

中图分类号:

X502

杨凌霄,侯鲁健,吕波,王文兴,周学华,王哲,周杨,程淑会 . 济南市大气细颗粒物水溶性组分及大气传输的研究[J]. 山东大学学报(工学版), 2007, 37(4): 98-103 .

YANG Ling-xiao,HOU Lu-jian,LV Bo,WANG Wen-xing,ZHOU Xue-hua,WANG Zhe,ZHOU Yang,CHENG Shu-hui .

Study on the water-soluble ions in fine particle matter and the long-range transport of air masses in the city Jinan

[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2007, 37(4): 98-103 .

参考文献

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