TETRAPYRROLES AND ASSOCIATED COMPOUNDS IN DEAD SEA ASPHALTS

被引：16

作者：

AIZENSHTAT, Z ^{[1
]}

DINUR, D ^{[1
]}

NISSENBAUM, A ^{[1
]}

机构：

[1] WEIZMANN INST SCI,GEOSCI GRP,REHOVOT,ISRAEL

来源：

CHEMICAL GEOLOGY | 1979年 / 24卷 / 1-2期

关键词：

D O I：

10.1016/0009-2541(79)90019-6

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Metallo- and free porphyrins (1000-1500 ppm) isolated from asphalts occurring as huge blocks floating in the northern part of the Dead Sea, have been analyzed by visible-UV (V-UV) spectrophotometry and by mass spectrometry. The concentration of vanadyl porphyrins in the asphalts exceeds by far that of the Ni-porphyrins, despite the 1:3 V/Ni ratio found in the total asphalt sample. The free porphyrins resemble those from the Uinta Basin (U.S.A.) gilsonite and contain a mixture of homologous Aetio- and deoxyphyllo-erythroaetioporphyrins (DPEP). The non-porphyrin fraction of the asphalt showed an identical aliphatic, hydrocarbon distribution with that of heavy crude oil from the same area. The more polar fraction associated with the porphyrins was compared with the polar fraction of the previously described ozokerite from the Dead Sea area. From high-resolution MS, IR, V-UV and NMR spectra, combined with hydrolysis and GLC analysis, it is suggested that even-numbered (C12, C16, C18:1, C22) fatty acids are associated with the asphaltic porphyrins, probably in the triglyceride form. © 1979.

引用

页码：161 / 174

页数：14

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