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| Single particle characteristics of fine particulate matter in dust |
| YU Nan-jiao1,2, HUANG Bo3, LI Mei1,2, CHENG Peng1,2, LI Lei1,2, HUANG Zheng-xu1,2, GAO Wei1,2, ZHOU Zhen1,2 |
1. Institute of Mass Spectrometer and Atmospheric Environmental, Jinan University, Guangzhou 510632, China;
2. Guangdong Engineering Research Center for atmospheric pollution online source apportionment system, Jinan University, Guangzhou 510632, China;
3. Guangzhou Hexin Instrument Company Limited, Guangzhou 510530, China |
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Abstract Soil dust, road dust, construction dust and coal stock dust in Guangzhou were sampled, The size distributions and chemical composition of fine particles from sampled fugitive dusts were analyzed using a single particle aerosol mass spectrometer (SPAMS). Construction dust and other three types of fugitive dust showed bimodal and unimodal size distribution, respectively. The chemical composition of different dusts had a great diversity. The particles from soil dust were dominated by AlRich particles,accounting for 37.97% of the total number of ionized particles; The particles from road dust were dominated by CaRich particles which accounted for 24.92% of the total number of ionized particles; particles from construction dust were dominated by SiRich particles, accounting for 33.33% of the total number of ionized particles; particles from coal stock dust were dominated by CaRich particles, accounting for 64.92% of the total number of ionized particles. It is noted that road dust showed distinct characteristics of soil dust and motor vehicle exhaust. These unique characteristics of fugitive dust enable further source apportionment of dust particles. In addition, the percentage of secondary components was highest in road dust.
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Received: 31 August 2016
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