Humic acid functionalized hyperbranched polytriazine based dispersive solid-phase extraction for acaricides determination in tea matrix.
Humic acid functionalized hyperbranched polytriazine based dispersive solid-phase extraction for acaricides determination in tea matrix.
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DOI：
10.1002/jssc.201900558
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发表时间：
2019
影响因子：
3.1
通讯作者：
Yiduo Mi;Xiaoyan Cui;C. Jia;Xinya Liu;Sanbing Zhang;Wenfeng Zhou;Haixiang Gao;Runhua Lu
中科院分区：
文献类型：
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作者：
Yiduo Mi;Xiaoyan Cui;C. Jia;Xinya Liu;Sanbing Zhang;Wenfeng Zhou;Haixiang Gao;Runhua Lu
制备了腐植酸功能化的超支化聚三嗪，并将其作为分散固相萃取-高效液相色谱法测定茶叶中的三种杀螨剂（四螨嗪、唑螨酯和哒螨灵）。吸附剂，其特征在于通过扫描电子显微镜，能量色散谱，Zeta电位，和傅里叶变换红外光谱。对萃取时间、离子强度、解吸条件进行了优化。利用FT-IR光谱评价了吸附机理。在最佳条件下，该方法具有精密度高（1.33-9.62%）、检出限低（0.19-3.54 μg L ~（-1））、线性范围宽（2.5 ~ 500 μg L ~（-1））等特点。该方法用于茶叶中杀螨剂的测定，相对回收率在65.20-108.13%，RSD <9.87%。该方法对茶叶中杀螨剂的检测具有很好的应用前景。本文受版权保护。All rights reserved.
Hyperbranched polytriazine functionalized with humic acid was prepared and developed as new sorbents for dispersive solid-phase extraction of three acaricides (clofentezine, fenpyroximate and pyridaben) in tea samples combined with HPLC detection. The sorbents were characterized by scanning electron microscopy, energy dispersive spectroscopy, Zeta-potential, and Fourier transform infrared spectroscopy. The extraction parameters (extraction time, ionic strength, desorption conditions) were optimized. The adsorption mechanism was evaluated utilizing FT-IR spectra. Under optimum conditions, satisfactory analytical performances were achieved, which included high precision (1.33-9.62%), low limits of detection (0.19-3.54 μg L-1 ) and wide linear range (2.5-500 μg L-1 ) for the analysis of the acaricides. Moreover, the proposed method proved highly effective for the determination of acaricides in tea samples, with the relative recoveries in the range of 65.20-108.13% and RSDs < 9.87%. The method has great application potential for the detection of acaricides in tea samples. This article is protected by copyright. All rights reserved.