Simultaneous analysis of thiabendazole,carbendazim and 2-aminobenzimidazole in concentrated fruit juices by liquid chromatography after a single mix-mode solid-phase extraction cleanup |
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| Authors: | Xiao S. Liu Zhang F. Tong Ling Zhen Da X. Huang Xin Gao Chao Y. Xu |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering , Guangxi University , Nanning, China;2. Technical Center of Guangxi, Entry-Exit Inspection and Quarantine Bureau , Nanning, China;3. School of Chemistry and Chemical Engineering , Guangxi University , Nanning, China;4. Technical Center of Guangxi, Entry-Exit Inspection and Quarantine Bureau , Nanning, China;5. Technical Center of Beijing, Entry-Exit Inspection and Quarantine Bureau , Beijing, China |
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| Abstract: | A method using liquid chromatography and a single mix-mode solid-phase extraction cleanup for the simultaneous analysis of thiabendazole [2-(1,3-thiazol-4-yl)-1H-benzoimidazole], carbendazim [(methyl N-(1H-benzoimidazol-2-yl)-carbamate)] and 2-aminobenzimidazole (1H-benzimidazol-2-amine) in concentrated fruit juices is described. The three fungicides were isolated from the samples and concentrated by solid-phase extraction on Oasis MCX cartridges. The determination was performed by liquid chromatography with a diode array, detecting at 288 nm. In this method, the average recoveries from blank control juice samples spiked in a concentration range of 0.01–0.10 mg/kg were in the range of 81–95%, with relative standard deviations below 8%. Detection limits and limits of quantification were 4 μ g/kg and 10 μ g/kg, respectively, for each fungicide. Real juice samples were analyzed by the proposed method. The results were compared to those from liquid chromatography-tandem mass spectrometry. |
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| Keywords: | Liquid chromatography solid-phase extraction thiabendazole carbendazim 2-aminobenzimidazole concentrated fruit juices |
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