thiosulphate การใช้

• This mixture contains ammonium thiosulphate and ferrous EDTA, a powerful chelating agent.
• The agent used is sodium thiosulphate, and reacts according to the following equation:
• The iodine liberated is titrated with sodium thiosulphate.
• The samples can be de-chlorinated using a sodium thiosulphate and deionized water solution that does not affect test results.
• Modern wet plate photographers may prefer less toxic fixers, often opting for the less toxic Sodium thiosulphate, but KCN is still used.
• It was simply a khaki-coloured flannel bag soaked in hypo solution ( glycerin and sodium thiosulphate ); it protected against chlorine.
• This technique has since been refined to substitute the silver precipitate with gold by immersing the sample in gold chloride then oxalic acid, followed by removal of the silver by sodium thiosulphate.
• Acidified sodium thiosulphate solution was used to react with the surface of the farthings after they had been struck, permanently altering their appearance and making it less likely to mistake them for half sovereigns.
• In anaerobic conditions, they are able to use only PS I cyclic photophosphorylation with electron donors other than water ( hydrogen sulfide, thiosulphate, or even molecular hydrogen ) just like purple photosynthetic bacteria.
• Once development is complete, the undeveloped silver salts must be removed by " fixing " in sodium thiosulphate or ammonium thiosulphate, and then the negative or print must be " washed " in clean water.
• Once development is complete, the undeveloped silver salts must be removed by " fixing " in sodium thiosulphate or ammonium thiosulphate, and then the negative or print must be " washed " in clean water.
• He had discovered in 1819 that sodium thiosulphate was a solvent of silver halides, and in 1839 he informed Talbot ( and, indirectly, Daguerre ) that it could be used to " fix " silver-halide-based photographs and make them completely light-fast.
• A number of common human foods and household ingestibles are toxic to dogs, including chocolate solids ( theobromine poisoning ), onion and garlic ( thiosulphate, sulfoxide or disulfide poisoning ), grapes and raisins, macadamia nuts, xylitol, as well as various plants and other potentially ingested materials.
• This is because the hydrogen sulphide produced from thiosulphate, which acts as a source of sulphur and creates a reduced oxygen tension in which " Vibrio " can grow due to its facultative anaerobic nature, combines with ferric ions from ferric citrate to produce ferric sulphide, which is black.
• In 1848 he contributed a paper to " The Chemist " ( vol . i . p . 248 ) on a mode of extracting silver from its ores ( depending on the solubility of the chloride in sodium thiosulphate ), led to the Von Patera process, used at Joachimsthal, and the Russell process, used in the western United States.
• The Iodine process was used for sterilising catgut string, which thereafter was dried in the open air becoming contaminated thereby  and then transferred to Glass tubes in which it was re-sterilised by iodine solution and then, by a process of aseptic transfer, the iodine was decolourised by thiosulphate which, in turn, by further aseptic transfer, was replaced by a tubing fluid containing phenyl mercuric nitrate.
• When development was complete, the calotype was rinsed, blotted, then either stabilized by washing it in a solution of potassium bromide, which converted the remaining silver iodide into silver bromide in a condition such that it would only slightly discolour when exposed to light, or " fixed " in a hot solution of sodium thiosulphate, then known as " hyposulphite of soda " and commonly called " hypo ", which dissolved the silver iodide and allowed it to be entirely washed out, leaving only the silver particles of the developed image and making the calotype completely insensitive to light.