乌鲁木齐市大气可吸入颗粒物中多环芳烃的污染特征及来源解析
Source apportionment of atmospheric polycyclic aromatic hydrocarbons in inhalable particulate matter at heating and nonheating periods in Urumqi,China
查看参考文献21篇
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文摘
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在乌鲁木齐市南、北设置2个采样点,从2011年3-12月采集可吸入颗粒物(PM_(2.5)、PM_(2.5-10))样品,分析了美国环境保护署优控的13种多环芳烃(PAHs)的浓度,采用比值法、主成分分析法和多元线性回归法对乌鲁木齐市大气PM_(2.5)、PM_(2.5-10)中PAHs的来源进行了分析。结果表明,科学院站PM_(2.5)中13种PAHs的总质量浓度平均值为247.2ng/m~3,变动范围为1.14~2 113.33ng/m~3;新大站PAHs的总质量浓度平均值为240.84ng/m~3,变动范围为4.96~1 359.41ng/m~3。而科学院站PM_(2.5-10)中13种PAHs的总质量浓度平均值为57.78ng/m~3,变动范围为1.18~519.87ng/m~3;新大站的总质量浓度平均值为49.18ng/m~3,变动范围为1.38~412.52ng/m~3。比值法分析结果表明,所采集样品的2/3来自煤和生物质的燃烧排放;主成分分析法和多元线性回归分析法结果表明,采暖期汽油和煤源对PM_(2.5)中总PAHs的贡献率为46%,而非采暖期混合源的贡献率高达85%。采暖期汽油和柴油源对PM_(2.5-10)中总PAHs的贡献率为66%,而非采暖期混合源的贡献率为78%。 |
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其他语种文摘
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Concentration of polycyclic aromatic hydrocarbons(PAHs)in inhalable particulate matter(PM_(2.5), PM_(2.5-10)) samples collected from March 2011 to December 2011 were analyzed at two sampling point of south and north sites of Urumqi.All samples divided into two categories depending on heating and non-heating period and ratio method,factor analysis method and multiple regression model were applied to source apportionment experiment of polycyclic aromatic hydrocarbons(PAHs)in PM_(2.5),PM_(2.5-10).The results of ratio method indicated that coal and biomass burning was the main source(about two-thirds)of the samples.Factor analysis method and multiple regression model were showed that in the heating period contribution of gasoline emission and coal combustion accounted for 46% of PM_(2.5) while mixed source up to 85% during the non-heating period.At the same time,contribution of gasoline and diesel emission accounted for 66% during the heating period while mixed source accounted for 78% in PM_(2.5-10) during the non-heating period. |
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来源
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环境污染与防治
,2015,37(1):35-40 【核心库】
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关键词
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多环芳烃
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乌鲁木齐
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源解析
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主成分分析法
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地址
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新疆大学化学化工学院, 新疆, 乌鲁木齐, 830046
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中国科学院广州地球化学研究所, 广东, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-3865 |
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学科
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环境污染及其防治 |
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基金
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国家自然科学基金资助项目
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新疆自然科学基金
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文献收藏号
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CSCD:5354615
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