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| 北京地区PM10与秸秆燃烧排放单颗粒对比分析 |
| Comparative Analysis of Single Particle of PM10 in Beijing and from Straw Combustion Emission |
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| DOI： |
| 中文关键词: PM10 秸秆燃烧排放 单颗粒分析 北京地区 |
| 英文关键词: PM10 Straw combustion emission Single particle analysis Beijing district |
| 基金项目:国家重点研发计划子课题“冬奥赛场气象观测站网布设及运控平台应用评估研究”基金资助项目（2018YFF0300101-7）；中央级公益性科研院所基本科研业务费专项基金资助项目（IUMKY201736） |
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| 中文摘要: |
| 采用场发射带能谱扫描电镜（FESEM/EDS）法分析北京怀柔地区PM10与秸秆燃烧排放颗粒的形貌特征和成分差异。结果显示：秸秆燃烧后排放颗粒物多为大粒径颗粒，成分上都含S、Cl和K元素。含有生物质燃烧标志元素K的PM10颗粒物多为含Si、Al和Na元素的燃煤飞灰和矿物颗粒，与秸秆燃烧排放颗粒组成化学元素差异明显。据此推断，北京区域PM10受秸秆燃烧排放影响相对较弱，化石燃料燃烧来源影响仍然显著。 |
| 英文摘要: |
| The shape characteristics and the components of PM10 collected in Huairou district, Beijing and the particulates emitted from crop straw combustion were analyzed through field emission scanning electron microscopy combined with energy dispersive spectroscopy (FESEM/EDS). The results showed that most of the particles emitted from straw combustion were large size particles containing S, Cl and K elements. Most of PM10 containing K which was regarded as a sign of biomass combustion also contained Si, Al and Na which come from coal fired fly ash or mineral particles, and was quite different from straw combustion emission particles. Therefore, it concluded that PM10 in Beijing was relatively less affected by crop straw combustion emission, and was significantly influenced by fossil fuel combustion |
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