PIXE用于北京市新镇地区大气颗粒物污染特征和来源解析研究

刘旭东; 杨竣凯; 肖才锦; 姚永刚; 运威旭; 唐婵娟; 金象春; 王平生; 倪邦发

doi:10.11889/j.0253-3219.2018.hjs.41.120201

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PIXE用于北京市新镇地区大气颗粒物污染特征和来源解析研究

低能加速器技术、射线技术及应用 | 更新时间：2021-05-19

- PIXE用于北京市新镇地区大气颗粒物污染特征和来源解析研究
- The pollution characteristics and source apportionment of atmospheric particulate at Xinzhen, Beijing using PIXE
- 核技术 2018年41卷第12期文章编号：120201
- 作者机构：
  
  1.中国原子能科学研究院核物理研究所北京 102413
  2.成都理工大学成都 610059
- 作者简介：
  
  [ "刘旭东, 男, 1994年出生, 2016年毕业于中国矿业大学, 现为硕士研究生, 研究领域为核分析技术及应用", "LIU Xudong, male, born in 1994, graduated from China University of Mining and Technology in 2016, master student, focusing on nuclear analysis technology and application" ]
  肖才锦, E-mail:13811340271@139.com XIAO Caijin, E-mail:13811340271@139.com
- 基金信息：
  
  国家重点研发计划(2016YFC0208501);国际原子能机构RCA亚太地区区域性技术协作项目组(RAS7029)
- DOI：10.11889/j.0253-3219.2018.hjs.41.120201
  中图分类号： TL99
- 收稿日期：2018-09-06，
  
  修回日期：2018-09-30，
  
  纸质出版日期：2018-12-10
- 稿件说明：
移动端阅览
刘旭东, 杨竣凯, 肖才锦, 等. PIXE用于北京市新镇地区大气颗粒物污染特征和来源解析研究[J]. 核技术, 2018,41(12):120201

Xudong LIU, Junkai YANG, Caijin XIAO, et al. The pollution characteristics and source apportionment of atmospheric particulate at Xinzhen, Beijing using PIXE[J]. Nuclear techniques, 2018, 41(12): 120201
刘旭东, 杨竣凯, 肖才锦, 等. PIXE用于北京市新镇地区大气颗粒物污染特征和来源解析研究[J]. 核技术, 2018,41(12):120201 DOI： 10.11889/j.0253-3219.2018.hjs.41.120201.

Xudong LIU, Junkai YANG, Caijin XIAO, et al. The pollution characteristics and source apportionment of atmospheric particulate at Xinzhen, Beijing using PIXE[J]. Nuclear techniques, 2018, 41(12): 120201 DOI： 10.11889/j.0253-3219.2018.hjs.41.120201.

摘要

为研究北京市新镇地区大气颗粒物的污染特征及其来源，于2015年12月~2017年12月间以每周两次的频率采集颗粒物样品。利用质子激发X射线荧光分析（Proton Induced X-ray Emission，PIXE）测定了140个样品中的Mg、Al、Si、S、Cl、K、Ca、Sc、Ti、Mn、Fe、Ni、Cu、Zn、As、Pb共16种元素的含量，并对主要的污染元素进行特征分析。结果表明：S、Cl、Cu、Zn、Pb在细颗粒物中占比较大且相关性较强，Mg、Al、Si、Ca、Ti、Fe则主要存在于粗颗粒物中并存在强相关性；污染时期细颗粒物中S、Cl、K、黑碳（Black Carbon，BC）和粗颗粒物中Si、Ca、Fe上升明显。正矩阵因子分析（Positive Matrix Factor Analysis，PMF）得到该地区存在的6种主要污染源：次级硫（34.70%）、建筑工业（24.39%）、含氯工业（13.05%）、土壤扬尘（12.81%）、交通排放（11.63%）和其他污染（3.42%）。

Abstract

Background

Atmospheric particulate pollution is one of topic issues for urban air pollution control and environmental improvement.

Purpose

This study aims to investigate the pollution characteristics especially the elements characteristics and identify the main emission sources of fine particulate matter PM

2.5

at Xinzhen area of Beijing.

Methods

Proton induced X-ray emission (PIXE) was used to analyze 140 atmospheric particulate matter samples. Positive matrix factorization model was used to analyze the source apportionment.

Results

The concentrations of particulate matter for 16 elements of Mg

Pb were measured. S

Zn and Pb account for a large proportion in fine particulate matter and are highly correlated. Mg

Ti and Fe mainly exist in coarse particulate matter and have strong correlation with each other. Concentrations of S

Black carbon (BC) in fine particles and Si

Fe in coarse particles increased significantly during pollution weather period. Through positive matrix factor analysis

the six major pollution sources in this area were founded:secondary sulfur (34.70%)

construction industry (24.39%)

chlorine industry (13.05%)

soil dust (12.81%)

transportation emissions (11.63%) and other pollution (3.42%).

Conclusion

The mass concentration and pollution elements' characteristics of particulate matter pollution in Xinzhen area were obtained

and six types of pollution sources and their contribution rates were analyzed.

关键词

Keywords

references

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