中国环境科学
中國環境科學
중국배경과학
China Environmental Science
2015年
11期
3239-3246
,共8页
张丹%赵丽%陈刚才%周志恩%殷宝辉%任丽红%袁睿
張丹%趙麗%陳剛纔%週誌恩%慇寶輝%任麗紅%袁睿
장단%조려%진강재%주지은%은보휘%임려홍%원예
燃烧源%PM10%PM2.5%粒径分布
燃燒源%PM10%PM2.5%粒徑分佈
연소원%PM10%PM2.5%립경분포
combustion sources%PM10%PM2.5%particle size distribution
采用荷电低压颗粒物撞击器(ELPI)和稀释采样系统研究重庆市工业源、交通源、生物质燃烧以及餐饮业油烟等各类燃烧过程的颗粒物排放特征.结果表明:燃煤锅炉以及各类柴油交通源颗粒物数浓度峰值都表现出单峰型的变化特征,峰值主要出现在0.20~0.48μm之间;生物质燃烧和餐饮业油烟颗粒物的数浓度都呈现出双峰型的变化趋势,分别出现在核模态(0.02~0.07μm)和积聚态(0.2μm);水泥窑炉的数浓度也出现双峰型变化特征,分别出现在积聚态(0.12μm)以及接近粗颗粒物态的1.23~1.96μm粒径范围处.各污染源颗粒物质量浓度峰值主要出现在粗粒径态,交通源排放的颗粒物质量浓度相对较高.各类污染源数浓度分布主要集中在积聚模态,粗颗粒态的数浓度累计贡献都不到1%;质量浓度主要分布在粗颗粒态,核模态的质量浓度贡献都小于0.1%.
採用荷電低壓顆粒物撞擊器(ELPI)和稀釋採樣繫統研究重慶市工業源、交通源、生物質燃燒以及餐飲業油煙等各類燃燒過程的顆粒物排放特徵.結果錶明:燃煤鍋爐以及各類柴油交通源顆粒物數濃度峰值都錶現齣單峰型的變化特徵,峰值主要齣現在0.20~0.48μm之間;生物質燃燒和餐飲業油煙顆粒物的數濃度都呈現齣雙峰型的變化趨勢,分彆齣現在覈模態(0.02~0.07μm)和積聚態(0.2μm);水泥窯爐的數濃度也齣現雙峰型變化特徵,分彆齣現在積聚態(0.12μm)以及接近粗顆粒物態的1.23~1.96μm粒徑範圍處.各汙染源顆粒物質量濃度峰值主要齣現在粗粒徑態,交通源排放的顆粒物質量濃度相對較高.各類汙染源數濃度分佈主要集中在積聚模態,粗顆粒態的數濃度纍計貢獻都不到1%;質量濃度主要分佈在粗顆粒態,覈模態的質量濃度貢獻都小于0.1%.
채용하전저압과립물당격기(ELPI)화희석채양계통연구중경시공업원、교통원、생물질연소이급찬음업유연등각류연소과정적과립물배방특정.결과표명:연매과로이급각류시유교통원과립물수농도봉치도표현출단봉형적변화특정,봉치주요출현재0.20~0.48μm지간;생물질연소화찬음업유연과립물적수농도도정현출쌍봉형적변화추세,분별출현재핵모태(0.02~0.07μm)화적취태(0.2μm);수니요로적수농도야출현쌍봉형변화특정,분별출현재적취태(0.12μm)이급접근조과립물태적1.23~1.96μm립경범위처.각오염원과립물질량농도봉치주요출현재조립경태,교통원배방적과립물질량농도상대교고.각류오염원수농도분포주요집중재적취모태,조과립태적수농도루계공헌도불도1%;질량농도주요분포재조과립태,핵모태적질량농도공헌도소우0.1%.
An electrical low-pressure impactor (ELPI) with an air dilution system was employed to investigate the PM emission characteristics of industry source, traffic source, biomass combustion and cooking fume. The result showed that, the particle number concentration of coal boilers and diesel traffic source presented one single peak with the range of 0.20 to 0.48μm, the biomass combustion and cooking fume presented double peak style, the peak appeared in the nuclei-mode (0.02~0.07μm) and accumulation mode (0.2μm) respectively, the cement kiln existed double peak too, at the round of 0.12μm and 1.23~1.96μm. The peak of mass concentration appeared in the coarse particle mode mostly in all source, and the diesel traffic source had higher level. The particle number concentration main accumulated in the accumulation mode, the fraction of coarse particle mode less than 1%, and the mass concentration major accumulated in the coarse particle mode, and the fraction of nuclei-mode less than 0.1%.