TY - GEN AU - Mohamed Abdelaal Elawady AU - Ahmed Fahmy Youssef , AU - Nour Tawfik Abdelghani , AU - Yousry Moustafa Issa , TI - Spectrometeric studies involving determination of some pharmaceutical compounds in pure form andtheir formulations / PY - 2005/// CY - Cairo : PB - Mohamed Abdelaal Elawady , KW - Cinchocaine hydrochloride (dibucaine) KW - Hyoscine N - butyl bromide (Scoplamine KW - Ion associates N1 - Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Analytical Chemistry; Issued also as CD N2 - Two sensitive spectrophotometric and atomic absorption spectrometric procedures have been developed for determination of hyoscine N - butyl bromide (scoplamine) and cinchocaine hydrochloride in pure form and in pharmaceutical formulationsThe spectrophotometric method was based on the formation of an insoluble coloured ionassociate between the cited drugs and cobalt thiocyanate or chromium thiocyanate , dissolved and extracted in an organic solventThe optimum experimental conditions for quantitative extraction such as pH , concentration of the reagents and solvent were studiedThe optimum concentration ranges , molar absorptivities UR - http://172.23.153.220/th.pdf ER -