Pattern Recognition/Expert System for Mass Spectra of Volatile Toxic and OtherOrganic Compounds

摘要

A system based on principles of pattern recognition has been developed foridentifying toxic and other volatile organic pollutants in complex environmental samples. It interprets the most commonly used monitoring data, mass spectral data, and produces a class designation, an estimate of the molecular weight and, if possible, a target pollutant identity. The system was developed and implemented with a very user friendly expert system which operates by asking questions of the user. The system was designed for samples with low concentrations of pollutants, e.g. ambient air samples. The mass spectra of 74 target and 31 other compounds were used to establish the five target and the one