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Microwave absorption medium‐assisted extraction coupled with reversed‐phase dispersive liquid–liquid microextraction of triazine herbicides in corn and soybean samples
Author(s) -
Wu Lijie,
Li Zhanchao,
Zhang Hanqi,
Wang Ziming
Publication year - 2020
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.202000567
Subject(s) - chromatography , triazine , extraction (chemistry) , absorption (acoustics) , chemistry , liquid liquid , phase (matter) , analytical chemistry (journal) , materials science , organic chemistry , composite material
Abstract A new extraction method, microwave absorption medium‐assisted extraction coupled with reversed‐phase dispersive liquid–liquid microextraction, was developed for the determination of triazine herbicides in corn and soybean samples. Triazine herbicides were extracted with hexane and then directly enriched into the ionic liquid phase. The purification of sample and concentration of target analytes were performed simultaneously. The method combines the advantages of nonpolar solvent dynamic microwave extraction and reversed‐phase dispersive liquid–liquid microextraction, which could greatly simplify the operation and reduce the whole pretreatment time. The Box–Behnken design was used to the optimization of experimental factors involved in the dynamic microwave‐assisted extraction. In the present study, good linearity in the range of 5.00–500.00 µg/kg was obtained. The limits of detection and quantification varying from 1.3 to 4.2 and 4.1 to 13.9 µg/kg were achieved, respectively. The intra‐ and interday precisions were between 2.7 and 6.9%. The present method was applied to the analysis of corn and soybean samples, and the recoveries of analytes ranged from 80.7 to 106.9% with the relative standard deviations of 2.1–7.8%. The present method shows the potentials of practical applications in the treatment of the complex fatty solid samples.