Determination of submicrogram amounts of chromium by coulometric titrimetry

Champion, Charles E.; Marinenko, George; Taylor, John Κ.; Schmidt, William Edward.

doi:10.1021/ac60293a021

Cited by 15 publications

(4 citation statements)

References 10 publications

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“…Based on Faraday's law, the coulometric assay yields the precipitation reaction factors on an absolute basis without any chemical standards, and highly precise results compared with other chemical methods. There are some reports regarding a coulometric study for acidimetric standards, [3][4][5][6][7][8] oxidimetric-reductometric standards, [9][10][11][12][13][14] and precipitation standards. [15][16][17][18][19][20][21] Hioki et al reported on the dependence of the coulometric titration results on the amount of sample mass due to the influence by carbon dioxide for acidimetry.…”

Section: 2mentioning

confidence: 99%

Influence of AgCl Precipitates on the Precipitation Titration of Sodium Chloride by Constant-Current Coulometry

et al. 2006

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The precipitation titration of sodium chloride with electrogenerated silver ion was studied. The production of a precipitate of silver chloride had a significant effect on the titration results because the precipitate involved unreacted chloride or unreacted silver ion. The accuracy of the method was investigated by changing the introduction time of a sodium chloride solution to the coulometric cell during the process of electrolysis, and examining the dependency on the sample size. The accuracy of the measurement of the precipitation titration is discussed.

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Section: 2mentioning

confidence: 99%

Influence of AgCl Precipitates on the Precipitation Titration of Sodium Chloride by Constant-Current Coulometry

et al. 2006

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“…In amperometry the precision of the measurement of the current can be limited by random fluctuations of the indicator current (15).…”

Section: )mentioning

confidence: 99%

Ring-disk study of ketolization of cis- and trans-stilbendiolate in strongly alkaline media

Johnson¹,

Gaines²

1973

Anal. Chem.

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“…The molar absorptivity of iron(II) Ferrozine chelate is approximately 2.5 times greater than that of iron(II) phenanthroline. Thus, greater sensitivity is obtained for the determination of cysteine, sulfur dioxide (7,8), and ascorbic acid (9) by using Fe(II)-Ferrozine rather than Fe(II)-phenanthroline. This note describes the determination of micro amounts of cysteine using iron(III) in the presence of Ferrozine.…”

mentioning

confidence: 99%

“…Generally, they found higher Cr levels in males than females; for example in human serum: 520 ppb for males and 170 ppb for females. Analysis of chromium in human serum has been investigated by various authors (3)(4)(5)(6)(7)(8)(9)(10)(11).…”

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confidence: 99%