Baleanu, DumitruDinc, Erdal02.02. Matematik02. Fen-Edebiyat Fakültesi01. Çankaya Üniversitesi2016-04-272025-09-182016-04-272025-09-182008Dinç, E., Baleanu, D. (2008). Application of Haar and Mexican hat wavelets to double divisor-ratio spectra for the multicomponent determination of ascorbic acid, acetylsalicylic acid and paracetamol in effervescent tablets. Journal of the Brazilian Chemical Society, 19(3), 434-444. http://dx.doi.org/10.1590/S0103-505320080003000100103-50531678-4790https://doi.org/10.1590/S0103-50532008000300010https://hdl.handle.net/123456789/11542Simultaneous determination of ascorbic acid (AA), acetylsalicylic acid (ASP) and paracetamol (PAR) in their synthetic mixtures and effervescent tablets were performed by Haar and Mexican continuous wavelet transforms (HAAR-CWT and MEXH-CWT, respectively) together with double divisor technique. The signal processing methods are based on the application of HAAR-CWT and MEXH-CWT to the double divisor-ratio spectra (DDRS). These spectra were obtained by dividing the absorption spectra of pure compound and its ternary mixtures by a double-divisor or standard spectrum corresponding to a mixture of two compounds in ternary mixture. A combined use of HAAR-CWT and MEXH-CWT with double divisor-ratio spectra (DDRS) was denoted by DDRS-HAAR CWT and DDRS-MEXH CWT. To check the ability or applicability of the developed DDRS-CWT methods, the double divisor-ratio spectra-derivative spectrophotometric (DDRS-DS) method, as a comparison method, was applied to the above mentioned samples containing AA, ASP and PAR and satisfactory results were obtained.eninfo:eu-repo/semantics/openAccessHaar Wavelet TransformMexican Wavelet TransformDouble Divisor-Ratio SpectraTernary Mixture AnalysisEffervescent TabletArticle10.1590/S0103-505320080003000102-s2.0-42649142265