Hydrocarbon group type analyzer system for the rapid determination of saturates, olefins, and aromatics in hydrocarbon distillate products

Journal Article · Wed Oct 01 00:00:00 EDT 1986 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00125a008· OSTI ID:5280645

Hayes, Jr, P C; Anderson, S D

A dielectric constant (DC) detector for high-performance liquid chromatography (HPLC) is the basis of a rapid and accurate hydrocarbon group type analysis. This novel method can determine saturates, olefins, and total aromatics in hydrocarbon liquids with distillation end points (ASTM D 2887) of at least 400 /sup 0/C. The HPLC separation is achieved by using a single, olefin-selective column, a backflush valve, and Freon 123 as the mobile phase. The DC detector ensures a genuine uniformity of response (less than 2.5% relative standard deviation) for each hydrocarbon group type independent of the carbon number distribution of the sample. Unity response factors are sufficient. On the basis of complex solutions of hydrocarbon standards, the accuracy for each structural group type is within 1% absolute. The chromatographic limit of detection is less than 0.5 vol % (800 ng) for the last eluting hydrocarbon group, i.e., the olefins.

• Research Organization: Wright-Patterson Air Force Base, OH
• OSTI ID: 5280645
• Journal Information: Anal. Chem.; (United States), Vol. 58:12
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKENES
LIQUID COLUMN CHROMATOGRAPHY
AROMATICS
HYDROCARBONS
QUALITATIVE CHEMICAL ANALYSIS
DIELECTRIC PROPERTIES
EXPERIMENTAL DATA
FREONS
LIQUIDS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
ELECTRICAL PROPERTIES
FLUIDS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
SEPARATION PROCESSES
400102* - Chemical & Spectral Procedures
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)