Chemometric Classification of Unknown Vapors by Conversion of Sensor Array Pattern Vectors to Vapor Descriptors: Extension from Mass-Transducing Sensors To Volume-Transducing Sensors

Grate, Jay W

Pacific Northwest National Laboratory (U.S.)

关键词: Classification;    Polymers;    37 Inorganic, Organic, Physical And Analytical Chemistry;    Calculation Methods;    Gas Analysis;   

DOI  :  10.2172/786791
RP-ID  :  PNNL-13529
RP-ID  :  AC06-76RLO1830
RP-ID  :  786791

美国|英语

来源: UNT Digital Library

【 摘 要 】

A new chemometric method was recently described for classifying unknowns by transforming the vector containing the responses from a multivariate detector to a vector containing descriptors of the detected analyte (Grate et al. 1999). This approach was derived for sensor arrays where each sensor's signal is proportional to the amount of vapor sorbed by a polymer on the sensor surface. In this case, the response is proportional to the partition coefficient, K, and the concentration of the vapor in the gas phase, Cv, where K is the ratio of the concentration of vapor in the sorbent polymer phase, Cs, to Cv.