2020年泰州市细颗粒物质量浓度高值区污染来源解析

程滢; 彭婷; 王玉祥; 吴莹

引用本文:	程滢，彭婷，王玉祥，吴莹.2020年泰州市细颗粒物质量浓度高值区污染来源解析[J].环境监控与预警,2021,13(6):51-56
	CHENG Ying, PENG Ting, WANG Yu-xiang, WU Ying.Source Apportionment of the Zone with High PM_2.5 Value in Taizhou City in 2020[J].Environmental Monitoring and Forewarning,2021,13(6):51-56

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2020年泰州市细颗粒物质量浓度高值区污染来源解析
程滢，彭婷，王玉祥，吴莹
江苏省泰州环境监测中心，江苏泰州 225300

摘要:

2020年在位于泰州市主城区大气细颗粒物（PM_2.5）质量浓度高值区的莲花国控空气站点进行手工采样,分析了大气PM_2.5的质量浓度和元素组成，以及离子、有机碳和元素碳的质量浓度。根据监测结果，采用正定矩阵因子分解（PMF）受体模型对其来源进行解析。结果显示，莲花站点大气PM_2.5中主要组分包括有机物、硝酸盐、硫酸盐、铵盐、地壳物质、氯盐、钾盐、黑炭、微量元素和钠盐，占比分别为35.7%，25.6%，13.9%，11.9%，6.1%，2.3%，1.5%，1.5%，0.8%和0.7%，有机物、硝酸盐、硫酸盐、铵盐为首要污染组分，这4类物质对PM_2.5的累计贡献为87.1%。根据解析结果与实际污染特征，提出应优化城市路网结构，强化工地扬尘管控，全面取缔燃煤炉和严抓秸秆禁烧工作等控制对策。

关键词: 泰州细颗粒物浓度高值区源解析

DOI：

分类号:X823

基金项目:江苏省PM_2.5和臭氧污染协同控制重大专项基金资助项目（2019023）；泰州市科技支撑计划（社会发展）基金资助项目（TS201709）

Source Apportionment of the Zone with High PM_2.5 Value in Taizhou City in 2020

CHENG Ying, PENG Ting, WANG Yu-xiang, WU Ying

Jiangsu Taizhou Environmental Monitoring Center, Taizhou, Jiangsu 225300, China

Abstract:

In 2020, Lianhua station was selected to conduct manual sampling in the area with high PM_2.5 value in Taizhou city. The mass concentration, elemental composition, ion, organic carbon and elemental carbon of PM_2.5 were analyzed. Positive Matrix Factorization (PMF) was used for source apportionment. The results showed that the main components of the atmospheric PM_2.5at Lianhua were organic matter (OM, 35.7%), nitrate (NO³_-, 25.6%), sulfate (SO⁴_2-, 13.9%), ammonium (NH⁴₊,11.9%), crustal material (6.1%), chloride (Cl_-, 2.3%), potassium (K₊, 1.5%), elemental carbon (EC, 1.5%), trace elements (0.8%) and sodium (Na₊, 0.7%). The organic matter, nitrate, sulfate and ammonium were the four primary pollutants which totally accounted for 87.1% of the atmospheric PM_2.5. According to the apportionment results and the pollution characteristics, a series of control measures were proposed to deal with the regional PM_2.5 pollution, such as optimizing the structure of urban road networks, enhancing the control of flying dust, banning coal combustion furnance and straw buurning, and so on .

Key words: Taizhou PM_2.5 Zone with high concentration Source apportionmen