Simultaneous Spectrophotometric Determination of Sunset Yellow and Quinoline Yellow in a Single Step |
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Authors: | Karim Asadpour‐Zeynali Sara Manafi‐Khoshmanesh |
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Affiliation: | Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 5166616471, Iran |
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Abstract: | In this work a new modified standard addition method for simultaneous spectrophotometric determination of Sunset yellow (SY) and Quinoline yellow (QY) is used. The generalized Net Analyte Signal Standard Addition Method (GNASSAM) was introduced for simultaneous standard addition of analytes. By applying this method the concentrations of analytes are determined in a single step. The applicability of new method was used for the simultaneous determination of strongly overlapped spectra of SY and QY in a real sample without using any separation step. GNASSAM was also used to calculate figures of merit. Moreover, good limits of detection (SY=0.13 and QY=0.16 mg L ?1) and suitable selectivity and sensitivity were determined. HPLC method was applied for finding subspace in binary mixtures of real samples. The results of investigated method for real sample were compared with HPLC results. The obtained results were in a good agreement with those of HPLC method. |
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Keywords: | Sunset yellow Quinoline yellow Simultaneous determination Net analyte signal |
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