Modified linear null-point potentiometry

Durst, Richard A.; Taylor, John Κ.

doi:10.1021/ac60256a029

Cited by 24 publications

(8 citation statements)

References 14 publications

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“…When corrected for the difference in carbon dioxide, which is removed when using the sodiumpotassium alloy, the results are identical. It was found that the cylinder of air examined had an oxygen content of 23.157 weight percent with a 95% confidence limit of 0.017% based on 36 determinations. This value is equivalent to 20.959 mole percent.…”

Section: Determination Of Atmospheric Oxygenmentioning

confidence: 95%

“…The contents of the cylinder from which the 36 Hersch-type cell [5] and integrating the current produced by the oxygen. Therefore, gravimetry as a method for the determination of oxygen at low concentrations was abandoned.…”

Section: Determination Of Atmospheric Oxygenmentioning

confidence: 99%

“…Improved Microdetermination of Silver by Linear NullPoint Potentiometry [35] Significant improvements in the results obtained for the determination of submicrogram amounts of silver by linear null-point potentiometry (LNPP) [36] have been achieved by the use of several minor modifications of the technique. Except for external pregeneration of the standard silver solutions, the apparatus is identical to that previously described [36] . [36].…”

Section: Determination Of Chromium In Ferrous Alloysmentioning

confidence: 99%

“…Except for external pregeneration of the standard silver solutions, the apparatus is identical to that previously described [36] . [36]. There is an initial potential drift, caused by the dissolution of the silver electrodes, which is more pronounced in the more dilute silver solutions.…”

Section: Determination Of Chromium In Ferrous Alloysmentioning

confidence: 99%

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Microchemical analysis section:

Taylor¹

1968

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Section: Determination Of Atmospheric Oxygenmentioning

confidence: 95%

Section: Determination Of Atmospheric Oxygenmentioning

confidence: 99%

Section: Determination Of Chromium In Ferrous Alloysmentioning

confidence: 99%

Section: Determination Of Chromium In Ferrous Alloysmentioning

confidence: 99%

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Microchemical analysis section:

Taylor¹

1968

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“…['], Morrison [31,and Giese and French14], in the early 503, the differentiation of experimental curves has been applied to many analytical processes. From the very large number of methods and investigations a representative selection may be made here as follows:…”

Section: Introductionmentioning

confidence: 99%

High‐Resolution, Higher‐Order UV/VIS Derivative Spectrophotometry

Talsky¹,

Mayring²,

Kreuzer³

1978

Angew. Chem. Int. Ed. Engl.

167

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Pages 785 -874 New analytical methods (14)I I Dedicated to Professor E . 0. Fischer on his 60th Birthday Derivative spectrophotometry has gained increasing importance in the past two years and is currently experiencing vigorous development. Following an introduction the present article provides a review of this extremely effective method. In particular, the advantages of higher-order derivative spectrophotometry (HODS method, n > 2) are discussed on the basis of practical examples from a wide range of analytical fields. The results are achieved with the aid of a newly developed analog computer unit, whereby for the first time readily reproducible, low-noise, on-line spectra can be obtained up to the 7th order and even, in favorable cases, up to the 9th order. In practice it has proved valuable to work with spectra of the 3rd to 5th order; but even higher derivations could be profitable for the separation of strongly superposed signals or for "fingerprinting".

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Feinauflösende UV/VIS-Derivativspektrophotometrie höherer Ordnung

1978

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In den vergangenen zwei Jahren hat die Derivativspektrophotometrie zunehmend an Bedeutung gewonnen und erlebt gegenwartig einen stiirmischen Aufschwung. Dieser Aufsatz bringt nach einer Einfiihrung eine Ubersicht uber die auBerst leistungsfahige Methode. An praktischen Beispielen aus den verschiedensten Gebieten der Analytik wird vor allem auf die Vorteile der Derivativspektrophotometrie hoherer Ordnung (DSHO-Methode; n > 2) eingegangen. Die Ergebnisse wurden mit einer neu entwickelten Analogrecheneinheit erzielt, rnit der man erstmalig gut reproduzierbare rauscharme Spektren on-line bis zur 7. Ordnung, in gunstigen Fallen sogar bis zur 9. Ordnung verwirklichen kann. In der Praxis hat sich das Arbeiten rnit Spektren der 3. bis 5. Ordnung bewahrt; noch hohere Ableitungen konnen bei der Trennung stark iiberlagerter Signale oder bei ,,Fingerprints" vorteilhaft sein.

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Modified linear null-point potentiometry

Cited by 24 publications

References 14 publications

Microchemical analysis section:

Microchemical analysis section:

High‐Resolution, Higher‐Order UV/VIS Derivative Spectrophotometry

Feinauflösende UV/VIS-Derivativspektrophotometrie höherer Ordnung

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