Soluble portions (SPs) 1-4 (SP

1

-SP

4

) were afforded from sequentially dissolution and alkanolyses of Baiyinhua lignite (BL) in cyclohexane

CH

3

OH

CH

3

CH

2

OH

and (CH

3

)

2

CHOH at 300℃. They were analyzed with a gas chromatograph/mass spectrometer and quadrupole exactive orbitrap mass spectrometer (QEOTMS) with an atmosphere pressure chemical ionization source in positive-ion mode

while BL was characterized with an X-ray photoelectron spectrometer (XRPES). The results show that the yields of SP

2

and SP

3

are much higher than those of SP

1

and SP

4

and the total SP yield is

ca

. 39.0%. According to the analysis with XRPES

pyrrolic nitrogen atoms are the most abundant nitrogen existing forms in BL. Thousands of nitrogen-containing aromatics (NCAs) were resolved with QEOTMS and their molecular masses are mainly in the range of 200-450

u

. The main NCAs are

N

1

O

1

and

N

1

O

2

class species with double bond equivalent values of 4-18 and carbon numbers of 7-30.

The nitrogen atoms appear in pyridines

quinolines

benzoquinolines or acridine

and dibenzoquinolines or naphthoquinolines

while the oxygen atoms exist in methoxy and furan rings.