The safety of domestic gas is analyzed in terms of the purchase of gas equipment,emergency handling of gas leakage accidents,symptoms of gas poisoning and relevant aid,which helps to prevent the occurrence of domestic gas accidents and can be used as reference for the analysis of gas poisoning accidents and explosion accidents.

Characteristics of polycyclic aromatic hydrocarbons emitted from indoor combustion of domestic coals;

Emission factors of PAHs in residential coal combustion in China;

The dehydrated lime as the main desulfurization chemical and the kiln earth as the binding agent are initially decided by combining the situation of characteristics and burning ways and resources of local civil coal.