VIEW ARTICLE    DOI: 10.1094/ASBCJ-47-0091

Microwave Digestion of Brewing Materials. Stephen L. McCarthy, The Technical Center, Anheuser-Busch, Inc., One Busch Place, St. Louis, MO 63118. J. Am. Soc. Brew. Chem. 47:0091, 1989.

A Teflon high-pressure vessel and concentrated nitric acid were used to digest solid brewing samples in a conventional microwave oven. After digestion, the sample solutions were analyzed for trace elements by inductively coupled plasma spectrometry. The method validation showed that elements Ca, Cu, Fe, K, Mg, Mn, Na, and Zn could be run successfully by this method. Results on Si were unsatisfactory.

Keywords: