The enzyme is reoxidized with an excess of a mediator reagent, such as a ferricyanide ion, a ferrocene derivative or osmium bipyridyl complex.
22.
Iridite 14-2, a chromate conversion coating for aluminum, contains chromium ( IV ) oxide, barium nitrate, sodium silicofluoride and ferricyanide.
23.
Potassium ferricyanide reacts with ferrous iron in acidic solution to produce the insoluble blue pigment, commonly referred to as Turnbull's blue or Prussian blue.
24.
The print is washed to remove excess potassium ferricyanide, and then immersed into a bath of toner, which converts the silver halides to silver sulfide.
25.
The image is then developed using a solution of potassium ferricyanide forming insoluble ferroferricyanide ( Turnbell's blue identical to Prussian blue ) with the divalent iron.
26.
Potassium ferricyanide is often used in physiology experiments as a means of increasing a solution's redox potential ( E?~ 436 mV at pH 7 ).
27.
Compared to normal cyanides like potassium cyanide, ferricyanides are much less toxic because of the tight hold of the CN & minus; to the Fe 3 +.
28.
Having established the composition of Prussian blue, Gadolin suggested a method for precipitating ferrous iron as ferro ferricyanide, preceding the work of Gay-Lussac by forty years.
29.
Ferricyanide is able, in vivo and in vitro, to promote inactivation of FNR function or [ 4Fe 4S ] . FNR destruction by means of oxidizing the cluster.
30.
Potassium ferricyanide is used in many amperometric biosensors as an electron transfer agent replacing an enzyme's natural electron transfer agent such as oxygen as with the enzyme glucose oxidase.
