On the Duclaux Method for the Estimation of the Volatile Fatty Acids.

Upson, Fred W.; Plum, H.; Schott, J

doi:10.1021/ja02249a025

Cited by 8 publications

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“…Comparing these results with the results obtained by assuming four acids present, as given in Table V above, one sees that mixture No. 18 gave almost identical results under either assumption, and that in the other three cases very much better results were obtained by neglecting the small quantity of fourth acid than by assuming the fourth acid present.…”

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The Possibilities and Limitations of the Duclaux Method for the Estimation of Volatile Acids.

Gillespie¹,

Walters²

1917

J. Am. Chem. Soc.

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I . Deerfield bituminous coal yields, by vacuum distillation, a number of hydrocarbons, mostly of the series CnHzn-4, resembling the hydrocarbons that compose the neighboring Mahone petroleum.2 . Utah Gilsonite gives members of the series, C,Hz, and C,H2,-2 that resemble the same hydrocarbons in petroleum, also a series of unsaturated hydrocarbons. It contains in large proportion the nitrogen compounds that are found in all petroleum, which demonstrates its organic origin.3. Grahamite gives a series of hydrocarbons resembling those from Gilsonite.4. As above mentioned, there is a no more urgent and promising field of investigation than the composition of the natural bitumens on an adequate scale with a sufKcient outlay of expense and expert labor. [CONTRIBUTION FROM LABORATORY OF THE OFFICE OF SOIL FERTILITY, THE BUREAU OF PLANT INDUSTRY, UNITED STATES DEPARTMENT OF AGRICULTURE.

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confidence: 64%

“…70 II .1016.20 21.05 25.60 29.90 33-90 37.60 41-15 4410.75 13.40 15.9918.66 21 .32 24.08 27.04 Difference 0 0 Pi Pi 0 Pi Pi V) on to to 00|N …”

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The Possibilities and Limitations of the Duclaux Method for the Estimation of Volatile Acids.

Gillespie¹,

Walters²

1917

J. Am. Chem. Soc.

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“…The composition of the volatile acids was estimated by means of the DuClaux procedure (9,17). This method is distinctly empirical; its value is in its simplicity and the small quantity of material required.…”

Section: Apparatus For Oxygen Absorption Testsmentioning

confidence: 99%