MULTIVARIATE STITISTICS ANALYSIS OF POLYCYLIC AROMATIC HYDROCARBONS IN CRUDE OIL FROM HAILAER BASIN, CHINA

摘要

Through gas chromatographic-mass spectrometric (GC-MS) analysis ,12 series and 167 aromatic hydrocarbon compounds,including naphthalene series.phenanthrene series,chrysene series,biphenyl series,fluorene series,dibenzofuran series, dibenzothiophene series.triaromatic steroid series,etc. have been detected in oil sampled from Beier depression in Hailaer Basin. Analysing to variable and specimen separately in the way of R mode clustering and Q's mode clustering , The cluster analyses results is shown in the dendrogram (Fig.l). The aromatic hydrocarbon compound divides into two types in figure l,one kind of variable all is the aromatic hydrocarbon chemical compound more than 4 rings, and another kind of aromatic hydrocarbons is from two to five rings aromatic hydrocarbons, It chiefly is 3 a rings aromatic hydrocarbon. The triaromatic steroid, alkyl triaromatic sterane , triaromatic dinosterane series and benzohopane series are divided into one kind, and indicate their relation is close.phenanthrene series and dibenzothiophene series are divided into one kind, and also indicate their relation is close. The dibenzothiophene series have relations with depositional environment , we can deduce the phenanthrene series also have relations with depositional environment. The aromatic hydrocarbon compound correlation analysis indicated that possesing the better correlation between triaromatic steranes series,alkyl triaromatic steranes series,triaromatic dinosteranes series and the benzohopanes series , all coefficients of correlation R are more than 0.89 (N=22) . phenanthrene series and allied dibenzothiophene series possess better correlation (R=0.82) and triaromatic steroid series, alkyl triaromatic sterane series, triaromatic dinosterane series, benzohopane series possess very good negative correlation ( the R respectively for -0.96,-0.94,-0.86 and -0.89 ). The dibenzothiophene series and triaromatic steranes, alkyl triaromatic steranes, triaromatic dinosteranes are also a negative correlation (the R respectively for - 0.77,-0.74, and -0.73).