Emissions of volatile organic compounds (VOCs) and carbonyls from residential coal combustion of five coals with different maturities were studied in a simulated room.The coals were burned in form of honeycomb briquettes in a domestic coal stove,one of the most common fuel/stove combinations in China.Through a dilution system,VOCs and carbonyls samples were collected by canisters and silica-gel cartridges and analyzed by gas chromatography and mass spectrum (GC/MS) and high performance liquid chromatography/ultraviolet (HPLC/UV),respectively.The results show that the bituminous coals with medium volatile matter content produce the highest emissions while the anthracite yields the lowest.Among the identified carbonyls from the coal smoke,the aromatic compounds (benzaldehyde,2,5-dimethylbenzaldehyde and p-tolualdehyde,m/o-tolualdehyde,benzene,m,p-xylene and trimethyl-benzene) were relatively abundant,which might be due to the molecular structure of the coal.For formaldehyde,aromatic carbonyls and aliphatic alkanes,their concentrations increase up to the maximum values and then decrease with increasing coal maturity.The total carbonyls and VOCs have the same tendency,which was observed for the emission factors of organic carbon (OC),elemental carbon (EC),particulate matter (PM) and polycyclic aromatic hydrocarbons (PAHs) detected in the series study.
<正>The use of coal briquettes and improved stoves by Chinese households has been encouraged bythe government a...
GUORUI ZHI,~(+,++) CONGHU PENG,~(||) YTNGJUN CHEN,~(*,§) DONGYAN LTU,~§GUOYTNG SHENG,~(++) AND JIAMO FU~(++) Key Laboratory for Atmospheric Chemistry,Centre for Atmosphere Watch & Services of CAM,Chinese Academy of Meteorological Sciences,Beijing 100081,China,State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences, Guangzhou 510640,China,Yantai Institute of Coastal Zone Research for Sustainable Development,Chinese Academy of Sciences,Yantai,Shandong Province 264003,China,and Department of Chemical and Environmental Engineering, Anyang Institute of Technology,Anyang, Henan Province 455000,China
