NURSING ANM AND GNM

Detailed explanation-1: -Prussian blue Typically, iron(II) sulfate is added to a solution suspected of containing cyanide, such as the filtrate from the sodium fusion test. The resulting mixture is acidified with mineral acid. The formation of Prussian blue is a positive result for cyanide.

Detailed explanation-2: -Symptoms From Larger Doses or Longer Exposure Death from poisoning usually results from respiratory or heart failure. 4 A person exposed to cyanide may have cherry-red skin from high oxygen levels or dark or blue coloring, from Prussian blue (iron-binding to the cyanide ion).