和田市城区PM 2.5 化学组成特征及来源分析

Q2 Environmental Science

环境科学研究 Pub Date : 2018-05-25 DOI:10.13198/j.issn.1001-6929.2017.04.23

苏吾比努尔·热克甫, 玉散·吐拉甫, 迪丽努尔·塔力甫, 王新明, 阿布力克木·阿不力孜, 亚力昆江·吐尔逊, 丁翔

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引用次数: 0

Abstract

为了解中国极干旱区域和田市城区大气PM2.5的组成特征及污染水平，于2014年1-12月采集和田市城区大气PM2.5样品，并用气相色谱-质谱联用仪（GC-MS）、离子色谱仪（IC）、电感耦合等离子体质谱仪（ICP-MS）及元素分析仪分析其中PAHs（多环芳烃）、金属元素、水溶性无机离子、OC（有机碳）和EC（元素碳）等化学组分.结果表明，采样期间和田市城区大气PM2.5质量浓度年均值为（770.11±568.01）μg/m3，呈夏季最高、冬季最低趋势；金属元素、水溶性无机离子、OC、EC、∑16 PAHs（总多环芳烃）分别占PM2.5质量浓度的15.292%、9.789%、4.246%、0.331%、0.015%.利用PMF（正交矩阵因子分解法）分别对PM2.5中PAHs和金属元素、水溶性无机离子、OC、EC进行来源解析表明，PAHs主要来源为煤和汽油燃烧排放（13.91%）、生物质燃烧（33.98%）、天然气燃烧（52.11%）；金属元素、水溶性无机离子、OC、EC的主要来源为土壤尘（56.49%）、油类燃烧（25.49%）、机动车排放（10.09%）、燃煤及生物质燃烧（7.93%）.研究显示，采样期间沙尘对和田市城区大气PM2.5组成影响较大，是该地区大气污染来源的主要因素.

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和田市城区PM 2.5 化学组成特征及来源分析

In order to understand the composition characteristics and pollution levels of atmospheric PM2.5 in the extremely arid region of China and the urban area of Hotan City, samples of atmospheric PM2.5 were collected from January to December 2014. Gas chromatography-mass spectrometry (GC-MS), ion chromatography (IC), inductively coupled plasma mass spectrometry (ICP-MS), and elemental analysis were used to analyze PAHs (polycyclic aromatic hydrocarbons), metal elements, and water-soluble inorganic ions The chemical components such as OC (organic carbon) and EC (elemental carbon) showed that the average annual concentration of PM2.5 in the urban area of Hotan City during the sampling period was (770.11 ± 568.01) μ G/m3, showing a trend of highest in summer and lowest in winter; Metal elements, water-soluble inorganic ions, OC, EC, and ∑ 16 PAHs (total polycyclic aromatic hydrocarbons) account for 15.292%, 9.789%, 4.246%, 0.331%, and 0.015% of the mass concentration of PM2.5, respectively. The source analysis of PAHs and metal elements, water-soluble inorganic ions, OC, EC in PM2.5 using PMF (orthogonal matrix factorization method) shows that the main sources of PAHs are coal and gasoline combustion emissions (13.91%), biomass combustion (33.98%) Natural gas combustion (52.11%); The main sources of metal elements, water-soluble inorganic ions, OC, and EC are soil dust (56.49%), oil combustion (25.49%), motor vehicle emissions (10.09%), and coal and biomass combustion (7.93%). Research shows that during the sampling period, dust has a significant impact on the atmospheric PM2.5 composition in the urban area of Hotan City, and is the main source of air pollution in the region

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来源期刊

环境科学研究 Environmental Science-Environmental Science (miscellaneous)

CiteScore

3.80

自引率

0.00%

发文量

6496

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