Iodide of Potassium.*--This compound is easily made in the following manner: Subject to a moderate heat a mixture of 100 parts of iodine, 75 of carbonate of potash, 30 of iron filings, and 120 parts of water. This mass must be thoroughly dried and then heated to redness; the resulting reddish powder is to be washed with water, and the solution obtained filtered, and evaporated to dryness. It is found that 100 parts of iodine yield 135 parts of very white, but slightly alkaline, iodide of potassium.英文原著 · 《American Hand Book of the Daguerreotype》
Experiment.--On projecting dry pulverized iodide of potassium into fused anhydrous phosphoric acid, a violent disengagement of iodine takes place, attended by a transient ignition; fused hydrate of phosphoric acid liberates iodine abundantly from iodide of potassium; this reaction is accompanied by the phenomenon of flame and formation of a considerable quantity of hydriodic acid.英文原著 · 《American Hand Book of the Daguerreotype》
Chloride of potassium.--or (Muriate of Potassa).--Dissolve half an ounce of carbonate of potassa in water, and neutralize with muriatic acid. Upon concentrating the solutions, cubic crystals will be obtained, having a taste similar to common salt. They consist of potassium and chloride, and when dissolved in water they may be regarded as muriate of potassa.英文原著 · 《American Hand Book of the Daguerreotype》
The Fixing Process.--In order to fix the picture thus obtained, first dip it into water; then partly dry it with bibulous paper, and wash it with a solution of bromide of potassium--containing one hundred grains of that salt dissolved in eight or ten ounces of distilled water. The picture is again washed with distilled water, and then finally dried. Instead of bromide of potassium, a solution of hyposulphite of soda, as before directed, may be used with equal advantage.英文原著 · 《The History and Practice of the Art of Photography》
Bromine and its Compounds--Iodine and its Compounds-- Chlorine and its Compounds--Cyanide of Potassium-- Hyposulphite of Soda--Hyphosulphite of Gold--Nitric Acid-- Nitro-Muriatic Acid--Hydrochloric Acid--Hydrofluoric Acid-- Sulphuric Acid--Accelerating Substances--Liquid Sensitives-- Dry Sensitives, etc., etc., .英文原著 · 《American Hand Book of the Daguerreotype》
Yeah, we found Rex's prescription bottles and doctored potassium pills as well as some disturbing diary entries.美剧 · 《Desperate Housewives》
- Then what's with all the bananas? - Potassium.美剧 · 《Friends》
Eating too much black licorice can lower potassium, which causes fatigue and constipation.美剧 · 《The Good Doctor》
The only difference is one uses natural cocoa and the other uses Dutch-process cocoa, which is alkalized with potassium carbonate.美剧 · 《The Good Doctor》