[Online Source Analysis of Particulate Matter (PM<sub>2.5</sub>) in a Heavy Pollution Process of Shijiazhuang City During Heating Period in 2015].
摘要
mainly produced by coal combustions and industrial discharges accumulated heavily and went through the second stage conversion, leading to this heavy air pollution. The main particulate matters from coal combustions were the mixed carbons; the main particulate matters from industrial discharges were metals; the main particulate matters from vehicle exhausts were elemental carbon and manganese metal; the main particulate matters from pure secondary inorganic sources were secondary inorganic ions; the main particulate matters from dust pollution were aluminum, calcium, iron and silicate minerals; the main particulate matters from biomass fuel combustions were levoglucosan; the feature signal from restaurant discharges was organic acid. Different from the distribution before and after the heavy pollution period, the particulate matters from the 8 pollution sources presented even distribution during the heavy pollution period.