XVI.—On a Modification of Pelouze's Method for determining Nitrates

Pelouze, as early as 1847, employed a method for determining nitrates in the commercial potassium and sodium salts, in which weighed quantities of the latter were boiled with ferrous chloride solution (obtained by treating a definite weight of iron wire with excess of hydrochloric acid), and afterwards the remainder of the ferrous salt was determined by titration of the diluted solution with potassium permanganate.