[1]李晓璐,张天然,章银柯,等. 杭州临安4种绿地内PM2.5中有机碳和元素碳的浓度变化及来源分析[J].西北林学院学报,2021,36(3):260-266.[doi:10.3969/j.issn.1001-7461.2021.03.38]
　LI Xiao-lu,ZHANG Tian-ran,ZHANG Yin-ke,et al. ConcentrationVariations and Source Analysis of Organic Carbon and Elemental Carbon in PM2.5 in Four Green Spaces in Lin’an District,Hangzhou[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2021,36(3):260-266.[doi:10.3969/j.issn.1001-7461.2021.03.38]
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 杭州临安4种绿地内PM2.5中有机碳和元素碳的浓度变化及来源分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第36卷
期数:
2021年第3期
页码:
260-266
栏目:
出版日期:
2021-05-31

文章信息/Info

Title:
 ConcentrationVariations and Source Analysis of Organic Carbon and Elemental Carbon in PM2.5 in Four Green Spaces in Lin’an District,Hangzhou
文章编号:
1001-7461(2021)03-0260-07
作者:
 李晓璐1; 张天然1; 章银柯2; 黄芳1; 袁楚阳1; 于慧1; 晏海1; 邵锋1*
 （1.浙江农林大学，浙江 杭州 311300；2.杭州植物园，浙江 杭州 310012）
Author(s):
 LI Xiao-lu1; ZHANG Tian-ran1; ZHANG Yin-ke2; HUANG Fang1; YUAN Chu-yang1; YU Hui1; YAN Hai1; SHAO Feng1*
 （1.Zhejiang A&F University,Hangzhou 311300,Zhejiang,China; 2.Hangzhou Botanical Garden,Hangzhou 310012,Zhejiang,China）
关键词:
 ; 城市绿地; PM2.5; 有机碳; 元素碳; 时空变化; 临安区
Keywords:
 ; urban green space;  PM2.5;  organic carbon;  elemental carbon;  spatio-temporal variation;  Lin’an district
分类号:
S731.2
DOI:
10.3969/j.issn.1001-7461.2021.03.38
文献标志码:
A
摘要:
 总结城市绿地内PM2.5中有机碳（OC）和元素碳（EC）质量浓度的时空变化规律，探究影响OC和EC质量浓度变化的因素，为改善人居环境质量提供依据。选取4种绿地（居住绿地、商业绿地、广场绿地和公共绿地）为研究对象，采用智能中流量TSP采样器采集绿地空气中的PM2.5，通过热光反射法（TOR）检测样品上OC和EC的质量浓度，分析其来源。结果表明，4种绿地内OC和EC质量浓度季节变化一致，均为冬季>秋季>春季>夏季；春、夏、秋3个季节OC和EC质量浓度日变化均呈“一日双峰”型，8:00-12:00和16:00-20:00为早、晚高峰，12:00-16:00和20:00-次日8:00出现低谷值。二次有机碳（SOC）质量浓度为春季（2.84±0.27 μg·m-3）、夏季（2.82±0.32 μg·m-3）、秋季（2.99±0.34 μg·m-3）和冬季（3.15±0.25 μg·m-3），分别占OC质量浓度的29.50%、11.96%、25.47%和32.12%，表明二次污染在各季节均存在。冬季机动车尾气和燃煤排放是PM2.5中OC和EC的主要来源。
Abstract:
 This study aims to summarize the spatio-temporal variation rules of the mass concentration of the organic carbon (OC) and elemental carbon (EC) in PM2.5 in urban green spaces and to probe into the factors that influence the variation of the mass concentration,so as to provide references for the improvement of human settlement.Taking residential,commercial,square and public green spaces as the research objects,the intelligent medium volume TSP samplers were used to collect the airborne PM2.5 in the green spaces,Thermo-optic Reflection (TOR) method was adopted to detect the mass concentration of the OC and EC in the samples and to retrieve the sources.The results revealed that the mass concentration of the OC and EC in the four seasons had the same trend:winter>autumn>spring>summer.The daily mass concentration changes of the OC and EC showed two peaks in spring,summer and autumn.The morning peak appeared during 8:00-12:00 and the evening peak arose during 16:00-20:00.The valley value appeared during 12:00-16:00 and 20:00-8:00 the next morning.The mass concentrations of secondary organic carbon (SOC) in the four seasons were 2.84±0.27 μg·m-3 in spring,2.82±0.32 μg·m-3 in summer,2.99±0.34 μg·m-3 in autumn,and 3.15±0.25 μg·m-3 in winter,accounting for 29.50%,11.96%,25.47%,and 32.12% of the OC mass concentration,respectively,indicating the ubiquity of secondary pollution in all the seasons.Vehicle exhaust and coal burning emissions were the main sources of the OC and EC in PM2.5 in winter.

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备注/Memo

备注/Memo:
 收稿日期：2020-06-18修回日期：2020-11-26
基金项目：国家自然科学基金（51508515）；浙江省大学生科技创新活动计划（2018R412044）。
作者简介：李晓璐。研究方向：园林植物应用与园林生态。E-mail:2417972498@qq.com
*通信作者：邵锋，副教授，博士。研究方向：园林植物应用与园林生态。E-mail:shaofeng@zafu.edu.cn
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