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Weekly PM 2.5 samples were collected for one year (1999–2000) in Beijing and Shanghai and the car-bonaceous species analyzed to investigate and compare their time series patterns and possible sources in the two biggest cities of China. Weekly carbonaceous concentrations varied in wide ranges with 8.6–59 µg m −3 for OC and 1.5– 25.4 µg m −3 for EC in(More)
Weekly PM 2.5 samples were collected for one year in Beijing and Shanghai and the carbonaceous species analyzed to investigate and compare their time series patterns and possible sources in the two biggest cities of China. Weekly carbonaceous concentrations varied in wide ranges with 8.6–59 µg m −3 for OC and 1.5–25.4 µg m −3 for EC 5 in Beijing, and with(More)
Here we synthesized a novel Ag/Si composite sub-micro particle using galvanic displacement by capitalizing on the active chemical surface of Si particles sludge from wafer-slicing process. Si works as chemical reactant, as well as reaction site to form composite particles. Sequent structural characterizations and analysis which include X-ray diffraction,(More)
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