Determination of sulfanilamide based on the Mn(II)-catalyzed oscillating chemical reaction |
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Authors: | Jinzhang Gao Dongyu Lv Wu Yang Xiaoxia Wei Jie Qu Hua Chen Hongxia Dai Jie Ren |
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Institution: | (1) Chemistry & Chemical Engineering College, Northwest Normal University, Lanzhou, 730070, P.R. China;(2) Chemistry & Chemical Engineering College, Lanzhou University, Lanzhou, 730000, P.R. China |
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Abstract: | A convenient and sensitive method for determination of sulfanilamide (SNA) was described based on the Mn(II)-catalyzed oscillating
chemical reaction. Under optimum conditions, a linear relationship existed between the changes of oscillating period or amplitude
and the negative of logarithm of SNA concentration in the range of 4.27 × 10−8 mol ·L−1 ∼ 7.41 × 10−6 mol ·L−1 (RSD, 0.85%) and 9.33 × 10−8 mol ·L−1 ∼ 3.02 × 10−6 mol ·L−1 (RSD, 1.08%), respectively. The lower limit of detection was found to be 2.69 × 10−8 mol ·L−1 and 6.03 × 10−8 mol ·L−1, respectively.
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Keywords: | Sulfanilamide Mn(II)-catalysed oscillating chemical reaction analyte pulse perturbation technique continuous-flow stirred tank |
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