Aqua regia is a extremely corrosive combination of concentrated nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. It was given its identify by alchemists as a result of it could actually dissolve the noble metals gold and platinum, although not all metals. Aqua regia is utilized in a wide range of purposes, together with the refining of gold, the manufacturing of printed circuit boards, and the etching of steel.
Denoxing aqua regia is the method of eradicating nitrogen oxides from the answer. Nitrogen oxides are produced when aqua regia is used to dissolve metals, and they are often dangerous to the surroundings and human well being. There are a selection of various strategies that can be utilized to denox aqua regia, together with:
