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Main Title Optimum Frequency of Calibration Monitoring.
Author Yfantis, E. A. ; Flatman, G. T. ; Garner, F. C. ;
CORP Author Lockheed Engineering and Management Services Co., Inc., Las Vegas, NV. ;Nevada Univ., Las Vegas.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Year Published 1988
Report Number EPA-68-03-3249; EPA/600/J-88/021;
Stock Number PB88-219233
Additional Subjects Calibrating ; Standards ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB88-219233 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Abstract The paper develops an algorithm by which to compute the optimal frequency of calibration monitoring to minimize the total cost of analyzing a set of samples and the required calibration standards. Optimum calibration monitoring is needed because of the high cost and calibration drift of the analyzing equipment. Gas chromatographs with mass spectroscopy equipment give trace analyses with previously unattainable precision, accuracy, and speed of turn-around when properly calibrated and systematically monitored. Calibration monitoring is done by including a known standard every fixed number of samples. Currently, this fixed number, or calibration monitoring frequency, is arbitrarily chosen; however, the paper gives a method to compute the optimal calibration monitoring frequency so that the total analyses costs for both samples and standards will be minimized. (Copyright (c) 1988 Elsevier Science Publishers B.V.)
Supplementary Notes Pub. in Chemometrics and Intelligent Laboratory Systems, v3 p39-43 1988. Prepared in cooperation with Nevada Univ., Las Vegas. Sponsored by Environmental Monitoring Systems Lab., Las Vegas, NV.
NTIS Title Notes Journal article.
Title Annotations Reprint: Optimum Frequency of Calibration Monitoring.
PUB Date Free Form c1988
Category Codes 99A
NTIS Prices PC A02/MF A01
Primary Description 600/07
Document Type NT
Cataloging Source NTIS/MT
Control Number 822520589
Origin NTIS
Type CAT