Accession Number : ADD014092

Title :   Hydrocarbon Group-Type Analyzer System.

Descriptive Note : Patent, Filed 12 Feb 88, patented 7 Feb 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Hayes, Paul C , Jr ; Anderson, Steven D

Report Date : 07 Feb 1989

Pagination or Media Count : 8

Abstract : This invention concerns analysis by high performance liquid chromatography (HPLC) of crude oils and petroleum products. In one embodiment of the invention a sample is quantitatively separated into saturates, alkyl benzenes and polynuclear aromatics using a system comprising a column packed with a porous silica packing material having a polar amino-cyano bonded phase in tandem with a column packed with a tetranitrofluorenimino packing material, and a dielectric constant detector. In another embodiment of the invention a sample is qualitatively separated into saturates, olefins, and total aromatics using a system employing an olefin-selective column and a dielectric constant detector. Patents. (MJM)

Descriptors :   *CRUDE OIL, *LIQUID CHROMATOGRAPHY, *PETROLEUM PRODUCTS, ALKYL RADICALS, AROMATIC COMPOUNDS, BENZENE, CONSTANTS, DETECTORS, DIELECTRIC PROPERTIES, HIGH RESOLUTION, PACKING MATERIALS, PATENTS, POROUS MATERIALS, SILICON DIOXIDE

Subject Categories : Organic Chemistry
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE