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燃烧源（农作物残余物、木材和固体废物）一次颗粒物的形态、组成和混合状态。

Morphology, composition, and mixing state of primary particles from combustion sources - crop residue, wood, and solid waste.

机构信息

Environment Research Institute, Shandong University, Jinan, 250100, China.

School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China.

出版信息

Sci Rep. 2017 Jul 11;7(1):5047. doi: 10.1038/s41598-017-05357-2.

DOI:10.1038/s41598-017-05357-2
PMID:28698671
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5505958/
Abstract

Morphology, composition, and mixing state of individual particles emitted from crop residue, wood, and solid waste combustion in a residential stove were analyzed using transmission electron microscopy (TEM). Our study showed that particles from crop residue and apple wood combustion were mainly organic matter (OM) in smoldering phase, whereas soot-OM internally mixed with K in flaming phase. Wild grass combustion in flaming phase released some Cl-rich-OM/soot particles and cardboard combustion released OM and S-rich particles. Interestingly, particles from hardwood (pear wood and bamboo) and softwood (cypress and pine wood) combustion were mainly soot and OM in the flaming phase, respectively. The combustion of foam boxes, rubber tires, and plastic bottles/bags in the flaming phase released large amounts of soot internally mixed with a small amount of OM, whereas the combustion of printed circuit boards and copper-core cables emitted large amounts of OM with Br-rich inclusions. In addition, the printed circuit board combustion released toxic metals containing Pb, Zn, Sn, and Sb. The results are important to document properties of primary particles from combustion sources, which can be used to trace the sources of ambient particles and to know their potential impacts in human health and radiative forcing in the air.

摘要

采用透射电子显微镜（TEM）分析了农作物残余物、木材和固体废物在住宅炉灶中燃烧时排放的单个颗粒的形态、组成和混合状态。我们的研究表明，农作物残余物和苹果木燃烧产生的颗粒主要是闷烧阶段的有机物（OM），而在燃烧阶段，烟尘-OM 与 K 内部混合。杂草在燃烧阶段释放出一些富含 Cl 的 OM/烟尘颗粒，而纸板燃烧则释放出 OM 和富含 S 的颗粒。有趣的是，硬木（梨木和竹子）和软木（柏树和松木）燃烧产生的颗粒在燃烧阶段主要是烟尘和 OM。泡沫盒、橡胶轮胎和塑料瓶/袋在燃烧阶段会释放出大量烟尘，内部混合有少量 OM，而印刷电路板和铜芯电缆在燃烧阶段会释放出大量含有 Br 夹杂物的 OM。此外，印刷电路板燃烧释放出含有 Pb、Zn、Sn 和 Sb 等有毒金属。这些结果对于记录燃烧源原始颗粒的特性非常重要，这些特性可用于追踪环境颗粒的来源，并了解它们对人类健康和空气辐射强迫的潜在影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/5e3c08f58d2c/41598_2017_5357_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/6e96ba05cff4/41598_2017_5357_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/5924f09308b2/41598_2017_5357_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/c81279b64a41/41598_2017_5357_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/37225e1248be/41598_2017_5357_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/15703dcd05ca/41598_2017_5357_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/1d68bb6139dc/41598_2017_5357_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/70cca3bbbe0f/41598_2017_5357_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/a42a9c2c6172/41598_2017_5357_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/2b21c317a008/41598_2017_5357_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/5e3c08f58d2c/41598_2017_5357_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/6e96ba05cff4/41598_2017_5357_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/5924f09308b2/41598_2017_5357_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/c81279b64a41/41598_2017_5357_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/37225e1248be/41598_2017_5357_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/15703dcd05ca/41598_2017_5357_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/1d68bb6139dc/41598_2017_5357_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/70cca3bbbe0f/41598_2017_5357_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/a42a9c2c6172/41598_2017_5357_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/2b21c317a008/41598_2017_5357_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/199c/5505958/5e3c08f58d2c/41598_2017_5357_Fig10_HTML.jpg

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