Determination of Trace Hydrocarbon Impurities in Petroleum Benzene and Toluene by Gas Chromatography

Fabrizio, F. A.; King, R. W.; Cerato, C. C.; Loveland, J. W.

doi:10.1021/ac60156a056

Cited by 5 publications

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“…A refractive index method representing an improvement in sensitivity over the ASTM method has been described by Wood, Martin, and Lipkin (10). Fabrizio et al (7) recently published a gas chromatographic method for determining trace M., Zollinger, H., Helv. Chem.…”

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Applications of Carbowax 400 in Gas Chromatography for Extreme Aromatic Selectivity

Durrett¹

1960

Anal. Chem.

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The recoveries of 95 to 100% of theoretical include instrumental variations and the possibility of impurities in the commercial samples used as standards. Because of the unusual difficulties in maintaining constant operating conditions during a series of runs at reduced pressure, frequent calibrations or internal standards (6) should be employed. A routine method devised for the analysis of similar aromatic sulfonic acid mixtures gave results with a two sigma variation of 5% relative for the major component when a peak area method with internal standardization was employed. ACKNOWLEDGMENTThe author is indebted to W. A. Gregory for his helpful discussions on the conversion reactions, and to G. J. Wallace, who assisted in the experimental work.Certain samples of sulfonic acids used in this study were generously supplied by J. E. Callen of the Procter & Gamble Co., Cincinnati, Ohio.

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confidence: 99%