Determination of Carbon in Sodium by Isotope Dilution Mass Spectrometry.

Eng, Kevin; Meyer, R.A.; Bingham, C.D.

doi:10.1021/ac60215a041

Cited by 5 publications

(3 citation statements)

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“…A study of previous methods (2)(3)(4)(5)(6)(7)(8)(9)(10)(11) revealed several areas where a different approach would eliminate problems. Broadly outlined, these areas are as follows: sampling and handling methods requiring minimum environmental contact; reduction of the blank to very low values by the use of carbonfree or low-carbon materials in the apparatus; a combustion method which ensures that the sodium oxide produced cannot retain carbon combustion products and that all the carbon converts to C02; and a method capable of reproducible measurements of the C02.…”

Section: Discussionmentioning

confidence: 99%

Stable pattern formation and determination of molecular size by pore-limit electrophoresis

Slater¹

1969

Anal. Chem.

102

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Section: Discussionmentioning

confidence: 99%

Stable pattern formation and determination of molecular size by pore-limit electrophoresis

Slater¹

1969

Anal. Chem.

102

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“…and titrimetry a r e used and it is assumed the gas being measured is C02. These methods a r e being replaced by the specific, and generally more sensitive techniques of gas chromatography(4) and mass spectrometry, (8) which identify a s well a s measure the quantity of gases found.…”

Section: Introductionmentioning

confidence: 99%

Sodium Mass Transfer. Xiii. The Determination of Total Carbon in Sodium

Sabol¹,

Dutina²,

Rey³

et al. 1964

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mentioning

confidence: 99%

Oxyacidic flux method for determination of carbon in sodium

Miles¹

1969

Anal. Chem.

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per 40 monomer units (10). Thus, the proteins move more and more slowly until they reach a certain relationship to the polymerized chains of the gel such that their further movement is linear with time at constant voltage. Therefore, "pore-limit" can be defined as the distance migrated from the original starting point in a specific gradient after which further migration occurs at a rate directly proportional to time (at a specific voltage). It also follows that when all the components in a mixture have reached their respective "porelimit" the time of migration becomes unimportant-viz., further migration will not change their positions relative to each other. Furthermore, if two proteins of known molecular weight are included in the mixture as standards, then after the "pore-limit" has been reached, a simple log-log plot can be used to determine the molecular weight of each of the other components in the mixture.Obviously there are limitations to the determination of molecular weight by the method described here. First, a protein must carry enough net charge to move it at an initial rate which is greater than the rate it would have at its "porelimit." It is also possible that very long and narrow proteins will migrate at slower rates at the "pore-limit" than globular proteins of equivalent weight; however, this remains to be determined. Also, the possibilities of association and disassociation are probably greater because the protein mix-

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Determination of Carbon in Sodium by Isotope Dilution Mass Spectrometry.

Abstract: A method utilizing isotope dilution mass spectrometry has been developed for the determination of carbon in sodium. The details of the method are

Cited by 5 publications

References 3 publications

Stable pattern formation and determination of molecular size by pore-limit electrophoresis

Stable pattern formation and determination of molecular size by pore-limit electrophoresis

Sodium Mass Transfer. Xiii. The Determination of Total Carbon in Sodium

Oxyacidic flux method for determination of carbon in sodium

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