Abstract
Chromium (III) acetylacetone complex is formed when chromium (III) is refluxed with and excess of acetylacetone at pH 6, and the complex can be quantitatively extracted with methyl isobutyl ketone. On the basis of this result, chromium (III) can be sensitively determined by atomic absorption method. This method, used for fuel-lean acetylene-air flame, is not interfered by iron, or by cobalt, nickel, aluminum, vanadium, titanium, or cyanide. Chromium (IV), can be determined by this method after being reduced to chromium (III) by hydrogen peroxide.
