Barium Thiosulfate Monohydrate, Standard for Thiosulfate Iodometry

MacNevin, W. M.; Kriege, Owen H.

doi:10.1021/ac60077a023

Cited by 7 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Barium thiosulfate monohydrate, which may be obtained commercially from several sources, has a high equivalent weight (267.51 amu) and can be dried to constant weight without special procedure at 40 °C. Above about 50 °C, the hydrate slowly loses water, and the effects of high drying temperatures have been reported previously (4). The solubility of the salt, 0.283 gram of BaS20s per 100 cm3 of saturated solution at 25 °C (5), is insufficient to allow preparation of a O.IN solution.…”

mentioning

confidence: 80%

Convenient preparation of standard thiosulfate solutions

Funk¹,

Herlinger²

1975

Anal. Chem.

View full text Add to dashboard Cite

mentioning

confidence: 80%

Convenient preparation of standard thiosulfate solutions

Funk¹,

Herlinger²

1975

Anal. Chem.

View full text Add to dashboard Cite

“…1 mL of bacteria culture was taken every 4 h and centrifuged at 13,000 rcf for 3 min and retained the supernatant for analysis. The indirect iodometry 41 was used to determine the tetrathionate metabolism.…”

Section: Determination Of Tetrathionate Metabolism Inmentioning

confidence: 99%

Construction of an Engineered Escherichia coli with Efficient Chemotactic and Metabolizing Ability toward Tetrathionate

Wang,

Zou,

et al. 2023

ACS Synth. Biol.

View full text Add to dashboard Cite

The emergence of genetically engineered bacteria has provided a new means for the diagnosis and treatment of diseases. However, in vivo applications of these engineered bacteria are hindered by their inefficient accumulation in areas of inflammation. In this study, we constructed an engineered Escherichia coli (E. coli) for directional migration toward tetrathionate (a biomarker of gut inflammation), which is regulated by the TtrSR two-component system (TCS) from Shewanella baltica OS195 (S. baltica). Specifically, we removed endogenous cheZ to control the motility of E. coli. Moreover, we introduced the reductase gene cluster (ttrBCA) from Salmonella enterica serotype typhimurium (S. typhimurium), a major pathogen causing gut inflammation, into E. coli to metabolize tetrathionate. The resulting strain was tested for its motility along the gradients of tetrathionate; the engineered strain exhibits tropism to tetrathionate compared with the original strain. Furthermore, the engineered E. coli could only restore its smooth swimming ability when tetrathionate existed. With these modifications enabling tetrathionate-mediated chemotactic and metabolizing activity, this strategy with therapeutic elements will provide a great potential opportunity for target treatment of various diseases by swapping the corresponding genetic circuits.

show abstract

“…The barium salt seems a poor alternative since it is too insoluble to prepare 0.1 M solutions, besides requiring large amounts of material in its preparation (4). We have now found that the crystalline pentahydrate, or even concentrated aqueous solutions, can be dehydrated with hot methanol in a matter of minutes to a loose powder of the anhydrous form.…”

Section: Literature Citedmentioning

confidence: 99%