[Monitoring Method of Total Particulate Matter in Ultra-low-emission and High-humidity Exhaust Gas from Stationary Sources and an Actual Test in a Gas Power Plant].

With the implementation of ultra-low-emission transformation in coal-fired power plants and other related industries in China, the concentrations of filterable particulate matter (FPM) and gaseous pollutants in exhaust gas from stationary sources have reduced significantly, while the emission of condensable particulate matter (CPM) remains a concern. In this study, the monitoring methods of FPM and CPM at a relatively low FPM concentration in exhaust gas from stationary sources in China and abroad were comprehensively analyzed. On the basis of existing research and experimental exploration, the monitoring methods of FPM and CPM were further studied.

[Pollution Characteristics and Potential Ecological Risks of Heavy Metals in Road Dust in Beijing].

Based on the concentrations of 21 inorganic elements in particulate matter with diameters less than 10 μm (PM) in 2004, and PM in 2004 and 2013 of representative road dust in Beijing, the pollution characteristics and potential ecological risks of heavy metals in this dust were analyzed and discussed. The results showed that the six main elements in road dust in Beijing were Si, Ca, Al, Fe, Mg, and K, and the proportions of the total content of the six elements in PM in 2004, PM in 2004, and PM in 2013 accounted for 96.51%, 96.

[Characteristics and Interannual Variation of Chemical Components in Typical Road Dust in Beijing].

Samples of road dust were collected from selected representative roads in Beijing in September 2004 and May 2013, and then re-suspended on filters using a NK-ZXF sampler to prepare road dust PM and PM samples. The concentrations of the chemical components in the road dust PM and PM were analyzed, and source profiles of the road dust in Beijing in 2004 and 2013 were established. The characteristics and interannual variation of the chemical components in the road dust in Beijing were analyzed and discussed.

[Temporal Variation, Spatial Distribution, and Reactivity Characteristics of Air VOCs in Beijing 2015].

In 2015, continuous volatile organic compound (VOC) monitoring was conducted for Dongsi (urban site), the southeast boundary site Yongledian, and Dingling (background site). The average annual mole fraction of atmospheric VOCs in urban areas was(48.93±31.

[Emission Characteristics of Residential Coal Combustion Flue Gas in Beijing].

Honeycomb briquet,biomass briquettes and bituminous coal from suburb of Beijing were chosen as testing samples to carry out combustion experiments. The characteristics of inorganic pollutant emission factors and VOCs emission factors released from the flue gas were studied. The results showed that under the condition of sufficient combustion, the average emission factors of SO from these three types of coal respectively were 1.