Cinchocaine hydrochloride determination by atomic absorption spectrometry and spectrophotometry

The atomic absorption spectrometric method is based on measuring of the excess cobalt or chromium in the aqueous solution, after precipitation of the drug, at 240.7 and 357.9 nm, respectively. Linear application ranges, characteristic masses and detection limits were 57.99-361.9, 50.40 and 4.22 μg ml-1 of Cin.Cl, in case of CoTC, while 37.99-379.9, 18.94 and 0.81 μg ml-1 in case of CrTC.