Accession Number:

ADA235928

Title:

Quantitative Structure Retention Relationships of Polychlorinated Dibenzodioxins and Dibenzofurans

Descriptive Note:

Final rept. 23 Aug 1989-30 Apr 1991

Corporate Author:

ARMY STUDENT DETACHMENT FORT BENJAMIN HARRISON IN

Personal Author(s):

• Needham, Mark D.

Report Date:

1991-08-01

Pagination or Media Count:

157.0

Abstract:

This thesis describes research involving Quantitative Structure- Retention Relationships QSRR. This research utilizes applied mathematics, multivariate statistics and computational techniques for determining models of retention behavior. The methodology is based upon the fact that there is a relationship between a compounds molecular structure and its chromatographic retention behavior. Linear models are created relating the observed retention data to a set of descriptors which numerically encode structural information. The regression models are validated to ensure their credibility. The first study generated regression equations modeling gas chromatographic retention behavior of polychlorinated dibenzodioxins for non-polar, moderately polar, and polar stationary phases. Extremely accurate predictive models were validated and predictions made where no experimental data existed. The second study involved the complete set of polychlorinated dibenzofurans.

Descriptors:

• *MATHEMATICAL MODELS
• EXPERIMENTAL DATA
• COMPUTATIONS
• PREDICTIONS
• VALIDATION
• MODELS
• STRUCTURAL PROPERTIES
• MULTIVARIATE ANALYSIS
• STATISTICS
• ACCURACY
• PHASE
• REGRESSION ANALYSIS
• RETENTION(GENERAL)
• STATIONARY
• LINEARITY
• MOLECULAR STRUCTURE
• BEHAVIOR
• APPLIED MATHEMATICS
• INDEX TERMS
• CHROMATOGRAPHS
• POLAR REGIONS

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE