中文摘要：本文基于连续滴流流微萃取-高效液相色谱法开发了一个简单、廉价、可靠、无分散溶剂且环境友好的果汁中三嗪类除草剂残留检测方法。本方法首先将微量有机溶剂转移至圆锥形试管底部，然后5ml水溶液通过该有机溶剂转变成细小的水滴，与此同时，将样本添加到萃取溶剂中对目标分析物进行萃取。在最佳条件下，不同果汁的萃取回收率均在71-90%范围内，校准曲线线性范围为1.5-600μg/L，相关系数大于0.9977。检测限为0.5-1.0μg/L，低于官方规定的最大残留限。
外文摘要：A simple, inexpensive, reliable, dispersive-solvent-free and environmentally friendly method based on continuous sample drop flow-microextraction (CSDF-ME) and high performance liquid-liquid chromatography-ultraviolet detection (HPLC-UV) was developed for the determination of triazine herbicides in fruit juice samples. In this method, a few microliters of organic solvent is transferred to the bottom of a conical test tube. Then, 5.0 mL of aqueous solution transforms to form fine droplets while passing through the organic solvent. During this step, the target analytes were extracted from the aqueous sample droplets into the extraction solvent. The parameters affecting the extraction process were studied and optimized. Under the optimum conditions, the extraction recoveries for different fruit juices are in the range of 71-90%. The calibration graphs are linear in the range of 1.5-600 mu g L-1, with the correlation coefficient (r(2)) being higher than 0.9977. The limits of detection (LODs) are in the range of 0.5-1.0 mu g L-1, which are lower than the maximum residue levels (MRLs) established by various official organizations. The repeatability (intra-day) and reproducibility (inter-day) of the method based on five replicate measurements of 80 mu g L-1 of herbicides were in the range of 2.6-4.1% and 3.7-6.3%, respectively.
 
 
外文关键词：SOLID-PHASE EXTRACTION; FLOATING ORGANIC DROP; ATOMIC-ABSORPTION-SPECTROMETRY; MASS-SPECTROMETRY; GAS-CHROMATOGRAPHY; PESTICIDE-RESIDUES; SOLIDIFICATION; WATER; VEGETABLES; SOIL
作者：Ahmadi-Jouibari, Toraj; Pasdar, Yahya; Pirsaheb, Meghdad; Fattahi, Nazir
作者单位：Kermanshah Univ Med Sci, RCEDH, Kermanshah, Iran.
期刊名称：ANALYTICAL METHODS
期刊影响因子：1.9
出版年份：2017
出版刊次：6
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