Bestimmung des kupfers durch die beiderfe(iii)-thiosulfatreaktion ausgeübte katalytische wirkung mit hilfe dersimultankomparations-methode unter anwendung neuer indikatoren

Bognár, János; Jellinek, Olga

doi:10.1016/s0003-2670(00)88637-7

Cited by 8 publications

(1 citation statement)

References 12 publications

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“…The difficulty in pumping concentrated H2S0, as well as substantial detector noise from refractive index changes induced by the heat of dilution and imperfect mixing due to high viscosity of the reagent led us to abandon a. The reduction of the Fe(II1) chelate was found to be inconveniently slow under the analysis conditions, even after adding Cu(I1) as a catalyst, which is reported to catalyze this reaction (28). Iodine was adsorbed by the PVC pump tubes, and this approach had no particular merit over the permanganate decolorization method finally chosen.…”

Section: Acknowledgmentmentioning

confidence: 99%

Simultaneous photometric flow-injection determination of sulfide, polysulfide, sulfite, thiosulfate, and sulfate

Sonne¹,

Dasgupta²

1991

Anal. Chem.

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The titie determination scheme has been developed for application to aqueous samples of importance to the petroleum industry. Sulfur(-11) is determined by acidification to produce H,S and gas diffusion into alkaline Na,[Fe(CN),NO]; in the same manifold, sulfur produced upon acidification from poiysulfides Is measured turbidimetrically and gives a measure of [S(O)]. Sulfite Is mesaured by acidification to produce SO,, gas diffusion, and bleaching of a pararosaniline receptor. Thiosulfate is measured by dialyzing the sample after on-line tretment with Zn2+ and HCHO and bleaching KMnO, with the dialyzate. Sulfate is measured by the turbidimetric BaSO, method; the fouHng of optical windows Is prevented by the use of a sheath-flow cuvette.

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Section: Acknowledgmentmentioning

confidence: 99%