Authors: Mostafa, GA Ghazy, SES

Citation: Ga. Mostafa et Ses. Ghazy, Indirect spectrophotometric determination of small amounts of selenium(IV)and arsenic(V) by simple extraction using flotation columns, ANAL SCI, 17(10), 2001, pp. 1189-1193

Authors: Abbas, MN Mostafa, GA

Citation: Mn. Abbas et Ga. Mostafa, Determination of traces of nitrite and nitrate in water by solid phase spectrophotometry, ANALYT CHIM, 410(1-2), 2000, pp. 185-192