Results 241 to 250 of about 18,528 (310)
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The effect of thiosulfate-oxidizing bacteria on the stability of the gold-thiosulfate complex
Geochimica et Cosmochimica Acta, 2005An Acidithiobacillus thiooxidans spp., isolated from the Driefontein Consolidated Gold Mine, Witwatersrand Basin, Republic of South Africa was able to precipitate gold from Au(S2O3)23− in the presence of up to 0.26 mM gold. In chemical control experiments and with the presence of dead bacteria, gold was not precipitated under similar experimental ...
Lengke, MF, Southam, G
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La Détermination des Thiosulfates par L'Hypobromite de Soude en Milieu Alcalin
, 2010Nous avons etudie le dosage des thiosulfates par l'hypobromite en exces en milieu alcalin. Les solutions d'hypobromite de soude, preparees a partir d'une solution bromate-bromure sont caracterisees par une parfaite stabilite.
A. Claeys, H. Sion
semanticscholar +1 more source
, 1997
The role of thiosulfates in pitting induced by chlorides on Fe-17Cr alloys in neutral medium was investigated by electrochemical and XPS techniques. The concentration was 30 ppm S2O32− in 0.02 M NaCl.
C. Duret-Thual +3 more
semanticscholar +2 more sources
The role of thiosulfates in pitting induced by chlorides on Fe-17Cr alloys in neutral medium was investigated by electrochemical and XPS techniques. The concentration was 30 ppm S2O32− in 0.02 M NaCl.
C. Duret-Thual +3 more
semanticscholar +2 more sources
, 1999
In this paper, we demonstrate that organic thiosulfates (Bunte salts) with the general formula R−SSO3M, where R is either an aliphatic or aromatic group and M a monovalent cation, constitute a novel class of surface-active compounds with a sulfur ...
J. Lukkari +6 more
semanticscholar +1 more source
In this paper, we demonstrate that organic thiosulfates (Bunte salts) with the general formula R−SSO3M, where R is either an aliphatic or aromatic group and M a monovalent cation, constitute a novel class of surface-active compounds with a sulfur ...
J. Lukkari +6 more
semanticscholar +1 more source
, 1972
Sodium and potassium salts of organic sulfonates (1-decyl, 1-dodecyl and 1-hexadecyl), sulfates (1-hexyl, 1-decyl and 1-octadecyl) and thiosulfates (1-octyl, 1-dodecyl, 1-tetradecyl, 1-hexadecyl, benzyl and β-phenylethyl) were ionized by laser ...
R. Mumma, F. Vastola
semanticscholar +1 more source
Sodium and potassium salts of organic sulfonates (1-decyl, 1-dodecyl and 1-hexadecyl), sulfates (1-hexyl, 1-decyl and 1-octadecyl) and thiosulfates (1-octyl, 1-dodecyl, 1-tetradecyl, 1-hexadecyl, benzyl and β-phenylethyl) were ionized by laser ...
R. Mumma, F. Vastola
semanticscholar +1 more source
Stain Technology, 1961
Na2S2O3 and HCl can be used as the reducing system to make Schiff reagent, the sulfur produced by the reaction acting as the adsorbent and consequently eliminating the need of decolorizing charcoal. To 100 ml of a 0.02% solution of basic fuchsin add 8 gm of dry Na2S2O3 shake for 3 min, add 0.5 ml of cone. HCl (final concentration 0.05 N).
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Na2S2O3 and HCl can be used as the reducing system to make Schiff reagent, the sulfur produced by the reaction acting as the adsorbent and consequently eliminating the need of decolorizing charcoal. To 100 ml of a 0.02% solution of basic fuchsin add 8 gm of dry Na2S2O3 shake for 3 min, add 0.5 ml of cone. HCl (final concentration 0.05 N).
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Sulfites, Thiosulfates, and Dithionites
, 2000The article contains sections titled: 1. Sulfites and Disulfites 1.1. General Properties 1.2. Ammonium Sulfite 1.3. Potassium Disulfite 1.4. Sodium Disulfite 1.5. Sodium Hydrogensulfite 1.6. Sodium Sulfite 1.7. Analysis of Alkali-Metal Sulfites
J. Barbera, A. Metzger, M. Wolf
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Journal of Chemical Education, 1990
The reactions of thiosulfate make impressive lecture demonstrations and worthwhile laboratory experiments.
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The reactions of thiosulfate make impressive lecture demonstrations and worthwhile laboratory experiments.
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Journal of Medicinal Chemistry, 1973
Substituted 2-pyridyloxy and 2-quinolyloxy derivatives of S- 2(alkylannino)ethyl hydrogen thiosulfates, 3-alkylthiazolidines, and substituted 2-pyridyloxy derivatives of 2- (alkylamino)ethanethiols and corresponding disulfides were synthesized as ...
R. Westland +6 more
semanticscholar +1 more source
Substituted 2-pyridyloxy and 2-quinolyloxy derivatives of S- 2(alkylannino)ethyl hydrogen thiosulfates, 3-alkylthiazolidines, and substituted 2-pyridyloxy derivatives of 2- (alkylamino)ethanethiols and corresponding disulfides were synthesized as ...
R. Westland +6 more
semanticscholar +1 more source