A Simple Method of Temperature Programming for Gas Chromatography

Borfitz, Harmon.

doi:10.1021/ac60179a057

Cited by 6 publications

(1 citation statement)

References 4 publications

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“…iii) Borfitz had discovered that the helium flow through a column may be stopped and peaks in that column may be "stored" for analysis at a later time (21). The intuitive prediction is that the shape of the peaks would deteriorate rapidly once the flow through the column was stopped.…”

Section: Lbl-1249mentioning

confidence: 99%

Multicolumn radio-gas chromatographic analysis of recoil tritium reaction products

Fee¹,

Markowitz²

1973

Anal. Chem.

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At one end of the scale, interferometric spectrometers provide high sensitivity and scanning speed but are very expensive. Specialist spectrometry laboratories using conventional dispersion instruments with a range of accessories come in an intermediate position. This approach is typified by the work of Freeman (13) who, using an ultramicro cavity cell and a beam condenser, has obtained a good spectrum from 1 #tg of eugenol in solution in 1 µ\ of carbon tetrachloride. In this type of work, the unknown from the GC separation is condensed into a glass capillary and washed out into the ultramicro cell with the requisite small volume of solvent, and sensitivity is gained at the expense of sample handling time. It is also possible to trade spectrometer performance for scanning speed, for "on-the-fly" work, and this point is well covered by Freeman (13).The objective of the present work, as noted at the outset, has been to provide a simple system based, as far as possible, on the equipment to be found in a smaller spectrometry laboratory, for use by staff who do not specialize in infrared spectrometry. In these circumstances, ease of operation, particularly in the handling of small samples, is of primary importance, and this has led to the vapor phase approach. The sacrifice made in terms of sensitivity is not a serious one in practice; the ability to obtain useful spectra from 100-µg samples and 20^g samples in many instances has proved adequate for the great majority of the problems encountered.

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Section: Lbl-1249mentioning

confidence: 99%

Multicolumn radio-gas chromatographic analysis of recoil tritium reaction products

Fee¹,

Markowitz²

1973

Anal. Chem.

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A development study of methanol acetic acid esterification

Corrigan¹,

Ferris²

1969

Can J Chem Eng

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his paper presents a pilot plant process dcvclopnicnt of a T typical esterification process. ?'he first phase consisted of the design and construction of a small versatile pilot plant system for the study of low pressure, moderate temperature liquid phase organic reactions. The second phase consisted of a specific development study of the esterification reaction of methyl alcohol and acetic acid. Supplerncntary work involved the development of a gas chromatographic analysis for a methyl alcohol, nicthyl acetate, acetic acid, and water system. Design and ConstructionThe basic pieces of equipment were a ten gallon, jacketed, glass-lined reactor, a ten gallon glass-lined receiving or feed tank, three sections of Oldershaw sieve tray column, reflux splitter, feed tray, condenser, and a flexopulse tinier.The equipment diagram (Figure 1) shows the layout and actual position of the pilot plant equipment. The ten gallon feed tank is lined with Pfaudler Glasteel 59 and designed for 150

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Der thermische Faktor in der Graschromatographie

Vitzthum

1962

Z. Anal. Chem.

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A Simple Method of Temperature Programming for Gas Chromatography

Cited by 6 publications

References 4 publications

Multicolumn radio-gas chromatographic analysis of recoil tritium reaction products

Multicolumn radio-gas chromatographic analysis of recoil tritium reaction products

A development study of methanol acetic acid esterification

Der thermische Faktor in der Graschromatographie

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