Analysis of Index Gases of Coal Spontaneous Combustion Using Fourier Transform Infrared Spectrometer

Table 1

Concentration range of every component of index gas.

Item	Gas	Range
1	CH4	0~200000
2	C2H6	0~10000
3	C3H8	0~5000
4	C4H10	0~5000
5	C4H10	0~5000
6	C2H4	0~5000
7	C3H6	0~3000
8	C2H2	0~3000
9	CO	0~10000
10	CO2	0~200000