太原市气溶胶中硫、氮转化特征
Characteristics of sulfur and nitrogen conversion in the aerosol,Taiyuan
查看参考文献24篇
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文摘
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基于太原市2013年5、6、12月和2014年1月大气中SO_2、NO_2及PM_(2.5)中水溶性离子SO-4~(2-)、NO_3~-浓度,分析了大气中硫和氮的转化率(F_s、F_n),并探讨了其影响因素.结果表明,大气中SO_2、NO_2的浓度夏季(5、6月)分别为89.98、64.73 μg ? m~(-3),由于燃煤供热冬季(12、1月)SO_2显著升高,SO_2和NO_2分别为119.09、63.92 μg?m~(-3).PM_(2.5)中水溶性离子SO_4~(2-)、NO_3~-夏季分别为16.54、6.87 μg.m~(-3),冬季显著降低,分别为12.79、5.53 μg?m~(-3).参照硫和氮气固两相转化模型,F_s夏季(0.13)高于冬季(0.07),F_n变化较小,夏、冬季分别为0.08、0.06,与南方城市相比,F_s较髙,F_n较低.硫、氮转化受多种因素共同影响,且不同季节主导因素不同.温度和O_3浓度对整个采样期间的硫转化起主要作用,冬季SO_4~(2-)与PM_(2.5)和湿度呈现一定的相关关系,显示SO_4~(2-)主要来源于均相气相反应,冬季部分源于非均相反应.夏季相对湿度和O_3浓度可明显促进氮转化,而冬季NO_3~-生成还与PM2.5和温度有关,说明夏季氮转化以均相液相反应为主,而冬季NO_3~-主要源于非均相反应.此外,NH_4~+与SO_2_4~(2-)、NO_3~-的线性分析表明,大气氨有助于气相中的硫、氮向颗粒相转移并转化. |
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其他语种文摘
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The conversion ratios of sulfur and nitrogen (Fs and Fn) from air to particle in Taiyuan were discussed, based on the atmospheric SO_2 and NO_2 and the water soluble ions (SO_4~(2-) and NO_3~-) in PM_(2.5) during two period of May-June 2013 (summer) and December 2013-January 2014 (winter).As the results showed, the SO_2 and NO_2 contents in summer were 89.98 μg ? m~(-3) and 64.73 μg?m ~(-3), respectively, while in winter NO_2 level was constant, but SO_2 increased to 119.09 μg?m~(-3) due to higher coal combustion for heating. The SO_4~(2-)and NO_3~- levels in PM_(2.5) were 16.54 and 6.87 μg?m~(-3) in summer, and decreased to 12.79 μg?m ~(-3) and 5.53 μg?m~(-3) in winter, respectively. By using the modified forms of the gas-particle distribution, F_s and F_n were 0.13 and 0.08 in summer, and 0.07 and 0.06 in winter, respectively. Both F_s and F_n were affected by multiple factors simultaneously,and the main factors varied seasonally. Higher temperature and ozone (O_3) level contributed primarily to higher sulfur conversion, showing that SO_4~(2-) mainly came from the homogeneous gas-phase reaction. However SO_4~(2-) partially came from heterogeneous reactions in the winter because of a correlation between SO_4~(2-), PM~(2.5) and relative humidity (RH,%). F_n increased with relative humidity and O_3 level in the summer, but in the winter NO_3~- was partially affected by temperature and PM_(2.5) level. These indicated the homogeneous liquid-phase reaction played an important role in the process of nitrogen conversion in summer, but the heterogeneous reaction dominated in winter. Furthermore,NH_4~+ in PM_(2.5) was well correlated with SO_4~(2-) and NO_3~-,which indicated atmospheric NH_3 may enhance the gas to particle sulfur and nitrogen migration and conversion. |
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来源
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环境化学
,2016,35(1):11-17 【核心库】
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DOI
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10.7524/j.issn.0254-6108.2016.01.2015060305
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关键词
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太原
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硫酸盐
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硝酸盐
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气象因素
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转化率
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气溶胶
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地址
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1.
太原科技大学环境与安全学院, 太原, 030024
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中国科学院广州地球化学研究所, 有机地球化学国家重点实验室, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0254-6108 |
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学科
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环境污染及其防治 |
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基金
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国家自然科学基金
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国家教育部重点项目
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山西省青年科技基金
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山西省回国留学人员科研项目
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文献收藏号
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CSCD:5630543
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参考文献 共
24
共2页
|
|
1.
曹玲娴. 太原市冬季灰霾期间大气细颗粒物化学成分特征.
中国环境科学,2014,34(4):837-843
|
CSCD被引
26
次
|
|
|
|
|
2.
Zhang Q. Effects of meteorology and secondary particle formation on visibility during heavy haze events in Beijing, China.
Science of the Total Environment,2015,502:578-584
|
CSCD被引
85
次
|
|
|
|
|
3.
He K. Spatial and seasonal variability of PM_(2.5) acidity at two Chinese megacities: Insights into the formation of secondary inorganic aerosols.
Atmospheric Chemistry and Physics,2012,12(3):1377-1395
|
CSCD被引
29
次
|
|
|
|
|
4.
Chen J. Impact of relative humidity and water soluble constituents of PM_(2.5) on visibility impairment in Beijing, China.
Aerosol and Air Quality Research,2014,14(1):260-268
|
CSCD被引
23
次
|
|
|
|
|
5.
Liu S. Size distribution and source analysis of ionic compositions of aerosols in polluted periods at Xinken in Pearl River Delta (PRD) of China.
Atmospheric Environment,2008,42(25):6284-6295
|
CSCD被引
30
次
|
|
|
|
|
6.
Pathak R K. Summertime PM_(2.5) ionic species in four major cities of China: Nitrate formation in an ammonia-deficient atmosphere.
Atmospheric Chemistry and Physics,2009,9(5):1711-1722
|
CSCD被引
72
次
|
|
|
|
|
7.
胡敏. 北京冬、夏季颗粒物及其离子成分质量浓度谱分布.
环境科学,2005,26(4):1-6
|
CSCD被引
63
次
|
|
|
|
|
8.
沈振兴. 采暖期和非采暖期西安大气颗粒物中水溶性组分的化学特征.
高原气象,2009,28(1):151-158
|
CSCD被引
30
次
|
|
|
|
|
9.
Parmar R S. Study of size distribution of atmospheric aerosol at Agra.
Atmospheric Environment,2001,35(4):693-702
|
CSCD被引
13
次
|
|
|
|
|
10.
Wang Y. The ion chemistry, seasonal cycle, and sources of PM_(2.5) and TSP aerosol in Shanghai.
Atmospheric Environment,2006,40(16):2935-2952
|
CSCD被引
214
次
|
|
|
|
|
11.
Khoder M I. Atmospheric conversion of sulfur dioxide to particulate sulfate and nitrogen dioxide to particulate nitrate and gaseous nitric acid in an urban area.
Chemosphere,2002,49(6):675-684
|
CSCD被引
36
次
|
|
|
|
|
12.
Wang Y. The ion chemistry and the source of PM_(2.5) aerosol in Beijing.
Atmospheric Environment,2005,39(21):3771-3784
|
CSCD被引
264
次
|
|
|
|
|
13.
Ohta S. A chemical characterization of atmospheric aerosol in Sapporo.
Atmospheric Environment, Part A General Topics,1990,24(4):815-822
|
CSCD被引
87
次
|
|
|
|
|
14.
朱彤. 大气复合污染及灰霾形成中非均相化学过程的作用.
中国科学:化学,2010,40(12):1731-1740
|
CSCD被引
93
次
|
|
|
|
|
15.
Sun C. Mechanisms and reaction pathways for simultaneous oxidation of NO_x and SO_2 by ozone determined by in situ IR measurements.
Journal of Hazardous Materials,2014(274):376-383
|
CSCD被引
1
次
|
|
|
|
|
16.
廖碧婷. 广州地区SO_4~(2-)、NO_3~-、NH_4~+与相关气体污染特征研究.
环境科学学报,2014,34(6):1551-1559
|
CSCD被引
27
次
|
|
|
|
|
17.
王美. 太原市大气污染防治战略研究.
环境科学与管理,2014,39(8):18-21
|
CSCD被引
2
次
|
|
|
|
|
18.
李艳红. 太原地区灰霾天气特征及影响因子分析.
气候与环境研究,2014,19(2):200-208
|
CSCD被引
11
次
|
|
|
|
|
19.
郭晓方. 近3年太原市夏季降水的化学特征研究.
环境科学,2015,36(2):388-395
|
CSCD被引
17
次
|
|
|
|
|
20.
贾小花. 太原市冬季PM_(2.5)水溶性组分污染特征分析.
中国环境科学,2013(4):599-604
|
CSCD被引
23
次
|
|
|
|
|
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