Digital Integrators-Effect of Slope Sensitivity, Filtering and Baseline Correction Rate on Accuracy

Gas chromatography

“…A symposium on Computer Automation of Analytical Gas Chromatography at the 158th Meeting of the American Chemical Society held at New York in September 1969 presented a number of digital electronic systems for data acquisition and reduction and these papers are published in the December 1969 and January 1970 issues of Journal of Chromatographic Science. Baumann and Tao (33) showed the effect of slope sensitivity, filtering, and base line correction rate on the accuracy of data obtained from digital integrators. A time-shared computer system and the computer interfacing were described for on-line GC data acquisition (460).…”

Gas chromatography

“…A recent survey by Varían Aerograph of over 1,600 practicing gas chromatographers shows that quantitative measurements are made using the following procedures: peak height, 28.0%; disc integrators, 20.8%; triangulation, 16.9%; plauim- eter, 15.5%; digital integrators, 8.5%; cut and weigh, 6.4%; computers, 2.4%; and tape systems, 1.4% (198). Errors occurring with the various manual integration techniques were evaluated by Ball, Harris, and Habgood (28) while digital integrators were considered by Baumann and Tao (41) and peak detection logic systems by Karohl (813). Mikkelsen (423) and Seher (536) considered the main sources of error in quantitative GC analysis and tabulated the normal reliability of analyses for the various type detectors and injection methods.…”