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It is shown that the average concentration of PM1 in Beijing during the whole observation periods is 66.04 ±51.45 μg/m3 and the mass concentration of PM1 in heavy haze (103.16~160.23 μg/m3 ) is 27.29~45.78 times of that in clean days (3.50~3.78 μg/m3 ). Significant differences are observed of the chemical components between heavy haze days and clean days in autumn in Beijing. The organic materials are the main chemical components of PM1 , contributing up to 64.90% during the clean days. While the secondary inorganic components increase significantly, reaching as high as 69.72% during the heavy haze days. The diurnal variation of sulfate is relatively small, reflecting the regional characteristics; while other components (organic matter, nitrate, ammonium and chloride) see significant diurnal variations. Overally, the composition of PM1 is affected by sources of pollution, atmospheric chemical reactions and the weather conditions., authors=ZHANG Hanyu, CHENG Shuiyuan, authorsList=ZHANG Hanyu, CHENG Shuiyuan, authorCompany=Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=yZC3Gnt4WvY4CLhDP4bPJg==, pdfFileSize=4562885, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242136658687107705, articleId=1242136655004512847, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=北京市秋季亚微米细颗粒物浓度及其化学组分特征, 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科技导报
|专题论文
2018
, 36
(2) :
47
-54
北京市秋季亚微米细颗粒物浓度及其化学组分特征
全屏
张晗宇, 程水源
作者信息
北京工业大学, 区域大气复合污染防治北京市重点实验室, 北京 100124
通讯作者:
程水源(通信作者),教授,研究方向为环境规划管理与污染防治,电子信箱:chengsy@bjut.edu.cn
作者简介:
张晗宇,博士研究生,研究方向为环境规划管理与污染防治,电子信箱:zhy2016@emails.bjut.edu.cn
Study on the concentration of submicron fine particles and its chemical constituents in autumn in Beijing
ZHANG Hanyu, CHENG Shuiyuan
Affiliations
Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China
出版时间: 2018-01-28
doi: 10.3981/j.issn.1000-7857.2018.02.005
文章导航
采用多通道采样器和气溶胶化学组成在线监测仪，对2016年10月北京市区大气亚微米颗粒物（PM1 ）化学组分进行了离线采样和在线监测。结果表明，整个观测期间，北京PM1 质量浓度平均为66.04±51.45 μg/m3 ，重霾期间PM1 的质量浓度（103.16~160.23 μg/m3 ）是清洁天（3.50~3.78 μg/m3 ）的27.29~45.78倍；北京秋季重霾天和清洁天的化学组分存在显著差异，有机物是PM1 的主要化学组分，清洁天贡献高达64.90%；而在重霾天，二次无机组分显著增长，贡献高达69.72%。硫酸盐日变化趋势相对平缓，反映出区域特性；而其他组分（有机物、硝酸盐、铵盐及氯化物）表现出显著的日变化特征。整体而言，大气PM1 中各组分受污染源排放、大气化学反应及天气形势的协同影响。
气溶胶化学组成在线监测仪
/
亚微米颗粒物
/
化学组分
In this paper, the URG's multi-channel sampler and the Aerosol Chemical Speciation Monitor (ACSM) are used for off-line sampling and online monitoring, focusing on the chemical components of atmospheric submicron particles (PM1 ) in Beijing in October 2016. It is shown that the average concentration of PM1 in Beijing during the whole observation periods is 66.04 ±51.45 μg/m3 and the mass concentration of PM1 in heavy haze (103.16~160.23 μg/m3 ) is 27.29~45.78 times of that in clean days (3.50~3.78 μg/m3 ). Significant differences are observed of the chemical components between heavy haze days and clean days in autumn in Beijing. The organic materials are the main chemical components of PM1 , contributing up to 64.90% during the clean days. While the secondary inorganic components increase significantly, reaching as high as 69.72% during the heavy haze days. The diurnal variation of sulfate is relatively small, reflecting the regional characteristics; while other components (organic matter, nitrate, ammonium and chloride) see significant diurnal variations. Overally, the composition of PM1 is affected by sources of pollution, atmospheric chemical reactions and the weather conditions.
ACSM
/
PM1
/
chemical components
张晗宇, 程水源.
北京市秋季亚微米细颗粒物浓度及其化学组分特征.
科技导报,
2018
, 36
(2)
: 47
-54
.
DOI: 10.3981/j.issn.1000-7857.2018.02.005
ZHANG Hanyu, CHENG Shuiyuan.
Study on the concentration of submicron fine particles and its chemical constituents in autumn in Beijing[J].
Science & Technology Review ,
2018
, 36
(2)
: 47
-54
.
DOI: 10.3981/j.issn.1000-7857.2018.02.005
2018年第36卷第2期
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文章信息
doi: 10.3981/j.issn.1000-7857.2018.02.005
接收时间：2017-10-18
首发时间：2018-02-05
出版时间：2018-01-28
收稿日期：2017-10-18
修回日期：2017-12-01
通讯作者:
程水源(通信作者),教授,研究方向为环境规划管理与污染防治,电子信箱:chengsy@bjut.edu.cn
https://castjournals.cast.org.cn/joweb/kjdb/CN/10.3981/j.issn.1000-7857.2018.02.005
引用本文
BibTeX
2种不同金属材料的力学参数
科 属数 种数 占总种数比例 属 种数 占总种数比例 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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