A Real-Time Gas Chromatographic Data System for Laboratory Applications

Woerlee, E.F.G.; Mol, J.C.M.

doi:10.1093/chromsci/18.6.258

Cited by 23 publications

(13 citation statements)

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“…The signal from both the flame ionization and proportional counter were fed to a Hewlett-Packard Model 9825B Desktop Computer. Chromatographic data were stored on tapes, and integration of areas determined by a real-time program essentially as described by WOERLY and MOL (78), but modified to fit the Hewlett-Packard hardware by Mr. S. HORSGARD (program available on request, Carlsberg Research Center).…”

Section: Radio-gas Chromatography (Radio-gc)mentioning

confidence: 99%

Biosynthesis of esterified alkan-2-ols and β-diketones in barley spike epicuticular wax: Synthesis of radioactive intermediates

Mikkelsen

1984

Carlsberg Res. Commun.

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Section: Radio-gas Chromatography (Radio-gc)mentioning

confidence: 99%

Biosynthesis of esterified alkan-2-ols and β-diketones in barley spike epicuticular wax: Synthesis of radioactive intermediates

Mikkelsen

1984

Carlsberg Res. Commun.

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“…It appears that the software developed for ItGC instrumentation by LSU performs data bundling with groups of four data points based upon our measurements of the MTI data rate and the data density of the files produced by LSU's software (25 points/sec). This degree of data bundling with GC chromatograms was previously discussed to be advantageous for automated analysis (Woerlee & Mol, 1980). …”

Section: Section 2 Deitection Algorithm Overviewmentioning

confidence: 99%

“…This excess of data points can also be exploited for noise reduction as well. Any of these smoothing techniques may be adequate for IAGC data analysis, and they are often used in combination (Woerlee & Mol, 1980). These techniques are described in the following paragraphs.…”

Section: Section 2 Deitection Algorithm Overviewmentioning

confidence: 99%

“…To damp such edge effects on the computation of the moving average, the averages are often "center weighted" by applying weights to the points in the computation of the moving average which favor the center points in the window. Examples of the favorable application of center-weighted averages to chromatograms are provided in the literature (Woerlee and Mol, 1980;Fozard et al, 1972). …”

Section: Section 2 Deitection Algorithm Overviewmentioning

confidence: 99%

“…The underweighting of edges can lead to small negative valleys near peak starts. This can be partially compensated by appropriate adjustments in the peak start position (Woerlee and Mol, 1980). Again, smoothing results in a large reduction in the noise and a large improvement in the operation of the peak detection algorithms.…”

Section: Section 2 Deitection Algorithm Overviewmentioning

confidence: 99%

See 2 more Smart Citations

Task 2 Report: Algorithm Development and Performance Analysis

Mustacich¹,

Foreman²,

Holland³

1993

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Effect of baseline fluctuation on linear calibration based on signal integration

Lelsztner¹,

Barna²,

Ullrich³

1982

J. High Resol. Chromatogr.

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Key Words: Gas chromatography Signal to noise ratio Linear calibration Signal integrationThe use of linear calibration according to the following equation is very widespread in gas chromatography.where Y, is the integrated instrument response or ratio a is the estimated slope of the calibration curve XI is the concentration or ratio b is the estimated ordinate intercept q is the error termThe estimation is made with the Yi, Xi pairs by the method of least squares, which is a method of maximum likelihood, if the distribution of data is normal. The precision and accuracy of the calibration have been extensively discussed in references [ 11 and [2]. There are two assumptions concerning the properties of the error term, which have not been discussed explicitly in the analytical literature.These are:W, and u are constant in time.where E(E) is the expected value of E V*(E,) is the variance of E, W, is the weighting factorIn our laboratory the ethanol content of 50000 blood samples per year is measured in the concentration range 0.05 gll to 5.0 gll, with 1 -propano1 as internal standard by headspace gas chromatography. Our experience has shown that an essential condition for unbiased estimation ofthe parametersaand b isaspecifiedsignal to noise ratio. where H is the height of the chromatographic peak

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A Real-Time Gas Chromatographic Data System for Laboratory Applications

Cited by 23 publications

References 0 publications

Biosynthesis of esterified alkan-2-ols and β-diketones in barley spike epicuticular wax: Synthesis of radioactive intermediates

Biosynthesis of esterified alkan-2-ols and β-diketones in barley spike epicuticular wax: Synthesis of radioactive intermediates

Task 2 Report: Algorithm Development and Performance Analysis

Effect of baseline fluctuation on linear calibration based on signal integration

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