Analysis of Caustic Liquors for Traces of Impurities

Duffendack, O. S.; Wolfe, R. A.

doi:10.1021/ac50119a013

Cited by 49 publications

(7 citation statements)

References 2 publications

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“…Background corrections were made whenever necessary. Residual impurities in the platinum blank were estimated by standard spectrographic techniques (2,6) and are listed in Table VI.…”

Section: Data and Discussionmentioning

confidence: 99%

Direct Spectrographic Determination of Trace Impurities by High Purity Platinum.

Lincoln¹,

Köhler²

1962

Anal. Chem.

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adsorption. It can proceed at the same time and on the same column with liquid-liquid partitioning. It is a mild type of adsorption and occurs when a partition column is not loaded to capacity with stationary phase.The 2,4-DNPH's that can be separated or purified on the three columns are not limited to those listed in Table I. Any 2,4-DNPH that has a polarity between the n-butanal derivative and the bis derivative of glyoxal should partition on one of the three columns. ACKNOWLEDGMENTThe author expresses his sincere thanks to Earl Hammond of Iowa State University and Daniel Schwartz of this laboratory for supplying some of the bis (2,4-dinitrophenylhydrazones)

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“…Background corrections were made whenever necessary. Residual impurities in the platinum blank were estimated by standard spectrographic techniques (2,6) and are listed in Table VI.…”

Section: Data and Discussionmentioning

confidence: 99%

Direct Spectrographic Determination of Trace Impurities by High Purity Platinum.

Lincoln¹,

Köhler²

1962

Anal. Chem.

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“…Vaughan et al (10) have reported that radioactive amino acids and proteins can be solubilized in Hyamine, but the authors themselves indicate the limitations of their method. Kinnory et al (3) have tried dissolving various C14 compounds found in tissues in formamide and adding ethyl alcohol and toluene. Alvarez and Jeffay (1) have attempted to count small quantities of aqueous solutions containing C14 tissue extracts in dioxane, but the nonlinearity of counting precludes use of this method.…”

Section: Burner Flamementioning

confidence: 99%

The Jet Fumigator

Rounds¹,

Hoefferle²,

Garner³

et al. 1961

Anal. Chem.

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be expected for duplicate determinations. A second precision series was run which incorporates most of the variable conditions usually associated with a spectrographic procedure over a longer period of time (Table II, Series 2).Each series of the seven elements represents a single determination photographed on one plate. The data cover a period of several weeks. The coefficients of variation listed for the seven elements are believed to be representative of those to be expected over longterm operation.

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“…In addition to the common models based on the simple Gramont design, holders have been devised for a-c arc exci tation of rods [1,2]1 or sheet metal [3], and for r apid change of spark electrode rods [4,5] or metal plates [6] . A universal holder has been described [7] that provides a variety of electrode movements and adjustments .…”

Section: Introductionmentioning

confidence: 99%

“…To meet these demands, a holder has been constructed incorporating the following features: (1) ease and speed of operation over the varied conditions encountered, (2) precise adj ustm ent and motion of parts to prevent errors caused by poor alinement · Presented at the Tenth Annual Conference on Applied Spectroscopy (at MIT) on July 22, 1942. 1 Figures in brackets indicate the literature references at the end of this paper.…”

Section: Introductionmentioning

confidence: 99%

An improved electrode holder for spectrographic analysis

Scribner¹,

Corliss²

1943

J. RES. NATL. BUR. STAN.

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An electrode holder has been constructed for improving the speed and ease of operations in miscellaneous spectrographic testing. Advantages afforded by the new holder include: (1) application to a variet y of electrode sizes and excitation conditions, (2) positive and precise adjustment and motion of the parts, (3) watercooling of the electrode clamps, and (4) a housi ng for protection against light, fu mes, and electric shock. The construction of the holder and its application t o excitation problems with the high-voltage spark, the a-c arc, and the d·c arc are described.

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Analysis of Caustic Liquors for Traces of Impurities

Cited by 49 publications

References 2 publications

Direct Spectrographic Determination of Trace Impurities by High Purity Platinum.

Direct Spectrographic Determination of Trace Impurities by High Purity Platinum.

The Jet Fumigator

An improved electrode holder for spectrographic analysis

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