The iodometric determination of dithionite, thiosulphate and sulphite in the presence of alkali and/or cyanide

Kilroy, William P.

doi:10.1016/0039-9140(80)80093-2

Cited by 21 publications

(18 citation statements)

References 4 publications

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“…Except for the titration method described in ref. 8 none of the methods [9][10][11] reported in the literature can be used for a selective determination of sodium dithionite. Furthermore, titration is a discontinuous method, even if an automatic system is used, which is an important drawback with regard to the need to control the sodium dithionite concentration.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behaviour of sodium dithionite at a platinum electrode and determination of diffusion coefficient in alkaline solution

Gasana¹,

Westbroek²,

Temmerman³

et al. 1999

Anal. Commun.

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Section: Introductionmentioning

confidence: 99%

Electrochemical behaviour of sodium dithionite at a platinum electrode and determination of diffusion coefficient in alkaline solution

Gasana¹,

Westbroek²,

Temmerman³

et al. 1999

Anal. Commun.

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“…This is substantiated by the excellent agreement in the values of 26.4 and 26.7 mM of total sulfur found with the theoretical values of 26.2 and 26.4 mM expected from the passage of 2526 and 2543 C, respectively. It was for this reason that the author changed the analytical scheme (11) to the present one (6). The presence of sulfide, which cannot be explained by a thermal process, may be formed chemically by the strongly reducing environment of the cathode.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

The Effect of High‐Temperature on the Discharge Chemistry of Li / SO 2 Cells

Kilroy

1991

J. Electrochem. Soc.

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The composition of products obtained from discharging Li-SO2 cells at low current density (1 mAJcm 2) at high temperatures (71~ has been determined. Accelerating rate calorimetry studies on Li2S204 indicate the discharge products are attributed to a partial thermal decomposition of the Li2S204 originally produced in the cell.The discharge chemistry of a Li-SO2 cell is a function of the discharge temperature. At ambient temperatures and low current densities (1 mA/cm2), the only discharge product is lithium dithionite (Li2S204) (1). When D-size cells were discharged at higher current densities (2 ~; average 2.5 A) at 72~ the analytical data indicate that although dithionite is still the major product, S, lithium dithionate (Li2S204), and lithium metabisulfite ((Li2S205) are also formed (2). In contrast, Godin et al., reported that D-size ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see

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“…The hydrated salts or aqueous solutions of the alkaline earth salts are rapidly oxidized in air to form bisulfate and bisulfite $2042-+ O~ + H20--~ HSO4 + HSO~ [2] Dithionites are unusually powerful reducing agents and the aqueous solutions avidly absorb oxygen. Kilroy (15) reports that at 0~ dithionite undergoes very d ~7 The effect of temperature and of the exclusion of oxygen on the stability of sodium dithionite solutions prepared in 0.1N NaOH is illustrated in Fig. The conditions under which the anaerobic solutions are most stable are cold temperature and a solution with a pH of 12 or greater.…”

Section: Resultsmentioning

confidence: 99%

“…(15), 0.5 ml of the cathode extract was removed and added to 1-2 ml of chilled (5~ distilled water in a 10 ml volumetric flask. (15), 0.5 ml of the cathode extract was removed and added to 1-2 ml of chilled (5~ distilled water in a 10 ml volumetric flask.…”

Section: Discharge Of Cells--commercial D-size Cells Havingmentioning

confidence: 99%

Product Analysis of Lithium/Sulfur Dioxide Cells Discharged and Stored at High Temperature

Godin

Farrington

Hayes

et al. 1987

J. Electrochem. Soc.

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The distribution of discharge products in Li/SO~ cells discharged in the temperature range -20 ~ to + 90~ was studied. The amount of lithium dithionite and lithium thiosulfate recovered in the aqueous extracts of the carbon electrode was determined by iodometric titration. The results of chemical analysis indicated that lithium dithionite was the maj or discharge product recovered in the cathode extracts in the temperature range -20 ~ to +50~ However, cells discharged at 60~ or warmer exhibited a product distribution transition with increased levels of thiosulfate and correspondingly suppressed levels of dithionite. The ratio of dithionite and thiosulfate was also determined semiquantitatively by Raman spectroscopy. The chemical analysis of cells placed on high temperature storage revealed that the Li:SO2 stoichiometry may become unbalanced due to the consumption of SO2.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 152.14.136.77 ABSTRACTThe emission Mbssbauer technique is used to study the chemical structure of the interphase formed between a cobalt substrate and a polyimide coating. The results are interpreted to indicate that the coating is bonded to the cobalt substrate by means of carboxylate bonds with Co 2+ ions in the oxide film at the interface.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 152.14.136.77 Downloaded on 2015-04-10 to IP

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The iodometric determination of dithionite, thiosulphate and sulphite in the presence of alkali and/or cyanide

Cited by 21 publications

References 4 publications

Electrochemical behaviour of sodium dithionite at a platinum electrode and determination of diffusion coefficient in alkaline solution

Electrochemical behaviour of sodium dithionite at a platinum electrode and determination of diffusion coefficient in alkaline solution

The Effect of High‐Temperature on the Discharge Chemistry of Li / SO 2 Cells

Product Analysis of Lithium/Sulfur Dioxide Cells Discharged and Stored at High Temperature

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