Report on Recommended Specifications for Microchemical Apparatus

Steyermark, Al; Alber, Herbert K.; Aluise, V. A.; Huffman, E. W. D.; Kuck, J. A.; Moran, J. J.; Willits, C. O.

doi:10.1021/ac60036a038

Cited by 38 publications

(2 citation statements)

References 15 publications

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“…This committee is still active. Its first work (6) was to bring up to date the recommendations of the previous committee and then to recommend specifications for new items (7).…”

Section: Standardizationmentioning

confidence: 99%

Standardization of Microchemical Methods and Apparatus

Willits¹

1951

Anal. Chem.

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“…This committee is still active. Its first work (6) was to bring up to date the recommendations of the previous committee and then to recommend specifications for new items (7).…”

Section: Standardizationmentioning

confidence: 99%

Standardization of Microchemical Methods and Apparatus

Willits¹

1951

Anal. Chem.

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“…Micro Pregl Absorption Tube. This follows ACS specifications for microchemical apparatus (6), and is 190 mm. long.…”

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confidence: 99%

Determination of Oxygen in Organic Materials by Modified Sch¨tze-Unterzaucher Method

Dundy¹,

Stehr²

1951

Anal. Chem.

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The SchGtze-Unterzaucher method was investigated formed from the hydrocarbon samples was gaseous hl-drobecause high results were obtained when certain gen and not hydrocarbons of low molecular weight. The sulfur lots of iodine pentoxide were used in the determina-compounds were largely converted t o hydrogen sulfide when tion of oxygen; analysis of hydrocarbon samples sufficient hydrogen was present in the sample, but where a indicated oxygen contents as high as 2.5%. Data deficiency of hydrogen existed there was an increasing tendency indicate that this anomaly is caused by liberation of for the formation of carbon disulfide. Carbonyl sulfide was extraneous iodine from the iodine pentoxide through produced in much smaller quantities. Nitrogen where present the partial reaction of the oxidant and the hydrogen was converted to hydrogen cyanide. Small quantities of hyformed by the pyrolysis of the sample. A gravi-drogen cyanide were also obtained from the samples conmetric procedure precludes interference due to ex-taining no nitrogen, an indication that the sweeping gas had traneous iodine. The iodine is retained in an absorpprobably reacted with the hot carbon to a limited extent. Ortion tube containing crystals of sodium thiosulfate ganic chlorine compounds formed hydrogen chloride. and suitable drying agents. The carbon dioxide is $]though the data presented are not extensive enough to give weighed by conven tional means in a Pregl micro ab-a satisfactory indication of exactly what happens in the reaction sorption tube. Improvements in apparatus and ex-tube, the results give a better understanding of why there were periences with both methods are described.some interferences in the volumetric method of Unterzaucher, Graham and Winmill (5), who determined carbon monoxide in

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Die Normung mikrochemischer Apparate, mit Berücksichtigung des gegenwärtigen Standes in den Vereinigten Staaten von Amerika

Alber¹

1951

Bericht Über Den I. Internationalen Mikrochemischen Congress

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Report on Recommended Specifications for Microchemical Apparatus

Abstract: Lithium greaseLess than 0.099 0.1 0.103 stopcocks should not be used in the direct path of the distilling vapors, as they will hold, by capillary action, part of the first water-rich distillate, and complete recovery of water will not be accomplished.

Cited by 38 publications

References 15 publications

Standardization of Microchemical Methods and Apparatus

Standardization of Microchemical Methods and Apparatus

Determination of Oxygen in Organic Materials by Modified Sch¨tze-Unterzaucher Method

Die Normung mikrochemischer Apparate, mit Berücksichtigung des gegenwärtigen Standes in den Vereinigten Staaten von Amerika

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