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Original Articles

“ISOLATION AND CHARACTERIZATION OF NATURAL SURFACTANTS PRESENT IN EXTRA HEAVY CRUDE OILS”

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Pages 1-18 | Received 30 Aug 1983, Published online: 28 Mar 2007
 

ABSTRACT

Natural surfactants have been Isolated from two Venezuelan crudes using a novel procedure. These compounds were analysed and their interfacial tension against pH were measured. The results were compared with those obtained for resins and asphaltenes Isolated from the crudes by conventional methods.

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