Retention factor database

Details Retention factor database Retention factor database

1997-05-20

2000-11-28

Ludlow, Jan

Chemistry: analytical and immunological testing

Including chromatography

73 2325, 73 2327, 73 2336, 95 82, 95 87, G01N 3002

Patent

active

061534382

ABSTRACT:
A method for identifying analytes of interest by referencing to a retention factor database corresponding to a plurality of identified analytes that is independent of column dimensions and carrier gas type while dependent upon stationary phase type ratio and a relative temperature program. The retention factor database is generated on a reference GC system in which the column head pressure is adjusted to ensure high reproducibility of retention times by locking the column void time and/or the retention time of an identified analyte to a specific value such that accurate retention factors (k) can be calculated in accordance with the formula: ##EQU1## where VT is the void time of the column having a specified stationary phase and phase coating installed in a GC system operating in accordance to a specified temperature program (where time is expressed in units of column void time).

REFERENCES:
patent: 4994096 (1991-02-01), Klein et al.
patent: 5405432 (1995-04-01), Snyder et al.
patent: 5827946 (1998-10-01), Klee et al.
Willard et al., Instrumental Methods of Analysis, Sixth Edition, Wadsworth Publishing, Belmont CA (1981) p. 435, 1981.
Chemical Abstracts, CA 127:265217, Svetlova et al., J. Anal. Chem. (Transl. of Zh. Anal. Khim.) (1997), 52(9), 868-870, 1997.
Chemical Abstracts, CA 103:177899, Abidi, J. Chromatogr. (1985), 324(2), 209-230, 1985.
"Standard Test Method For Detailed Analysis Of Petroleum Naphthas Through n-Nonane By Capillary Gas Chromatography"; ASTM Committee D-2 on Petroleum Products and Lubricants; Published Oct. 1992, Originally published as D 5134-90.
Hewlett-Packard Company Operation Manual, "5880A Gas Chromatograph PNA Analyzer, Operation 850", Oct. 1982, Revised Jul. 1983; Part No. 18900-90850.
Hewlett-Packard Company Operation Manual, "The HP5880A Gas Chromatograph and The HP85 Computer Configured for PNA Analysis"; 18900-90603; Mar. 1985 Rev. B, Apr. 1986 Rev C.

Affiliated with

Also associated with

Rating

Retention factor database does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Retention factor database, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retention factor database will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1724146