title: Rapid determination of trace thiabendazole in apple juice utilizing dispersive liquid-liquid microextraction combined with fluorescence spectrophotometry.
abstract: Food safety has become a large concern and prompts an urgent need for the development of rapid, simple and sensitive analytical methods that can monitor pesticide residues in foods. This study aimed to provide a method for quantitative determination of trace thiabendazole in apple juice. Due to its high sensitivity and selectivity, fluorescence spectrophotometry was utilized as a front end to dispersive liquid-liquid microextraction (DLLME). The experimental parameters that influenced the extraction were systematically investigated. Under optimum conditions, the whole procedure, including DLLME and analysis of one sample, was carried out within 5 min, and linearity was found in the 5-50 µg/L range with a correlation coefficient (r) of 0.9987. The limit of detection value was 2.2 µg/L. Good reproducibility was achieved based with a less than 4.5% relative standard deviation (RSD) for five replicates at different sample concentrations. This method was shown to be suitable for rapid and sensitive quantification of thiabendazole in apple juice.
authors: Shanghai Key Laboratory of Functional Materials Chemistry, and Research Centre of Analysis and Test, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
authors: Wei
authors: W
authors: Li
authors: Shanghai Key Laboratory of Functional Materials Chemistry, and Research Centre of Analysis and Test, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
authors: Yuning
authors: Y
authors: Wang
authors: Shanghai Key Laboratory of Functional Materials Chemistry, and Research Centre of Analysis and Test, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
authors: Limin
authors: L
authors: Huang
authors: Shanghai Key Laboratory of Functional Materials Chemistry, and Research Centre of Analysis and Test, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
authors: Ting
authors: T
authors: Wu
authors: Shanghai Key Laboratory of Functional Materials Chemistry, and Research Centre of Analysis and Test, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
authors: Huilian
authors: H
authors: Hu
authors: Shanghai Key Laboratory of Functional Materials Chemistry, and Research Centre of Analysis and Test, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
authors: Yiping
authors: Y
authors: Du
mesh_terms: D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis; D000067030:Fruit and Vegetable Juices / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D059627:Liquid Phase Microextraction / Q000379:methods*; D027845:Malus / Q000737:chemistry; D015203:Reproducibility of Results; D012997:Solvents; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013827:Thiabendazole / Q000032:analysis*; D013997:Time Factors
chemical_list: D012997:Solvents; D013827:Thiabendazole
keywords: dispersive liquid-liquid microextraction (DLLME); fluorescence spectrophotometry; quantitative analysis; rapid determination; thiabendazole