基于SPAMS的典型污染天气PM_(2.5)来源解析

Source Analysis of PM_(2.5) for Typical Pollution Event Based on Single Particle Aerosol Mass Spectrometer

利用单颗粒气溶胶质谱仪(SPAMS)对泉州市典型污染天气的PM_(2.5)进行快速来源解析。结果表明,二次无机源(21.2%)为首要污染源,其次为燃煤(19.1%)、机动车尾气(18.2%)和生物质燃烧(11.0%)。受春节烟花爆竹大量燃放和静稳不利气象条件的双重影响,泉州市于研究时段内出现三个典型的PM_(2.5)污染过程。PM_(2.5)污染主要受颗粒物二次反应的影响,烟花源的贡献明显高于其他污染源,建议泉州市春节期间重点加强对燃放烟花爆竹的管控。

Single particle aerosol mass spectrometer(SPAMS)was used to quickly analyzed the sources of components in PM_(2.5) of typical polluted weather in Quanzhou.The results show that secondary inorganic sources(21.2%)are the primary pollution source.Coal combustion,vehicle emission and biomass burning are also important,accounting for 19.1%,18.2%and 11.0%respectively.Affected by the large number of fireworks and firecrackers during the Spring Festival and the static stability of unfavorable weather conditions,there are three typical PM_(2.5) pollution periods in Quanzhou during the study period.The secondary reaction of particulate matte is the main influencing factor and the contribution of fireworks is significantly higher than other pollution sources which suggests that Quanzhou should focus on strengthening the control of setting off fireworks and firecrackers during the Spring Festival.