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首页> 外文期刊>Analytical and bioanalytical chemistry >Rapid monitoring of plant growth regulators in bean sprouts via automated on-line polymeric monolith solid-phase extraction coupled with liquid chromatography tandem mass spectrometry
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Rapid monitoring of plant growth regulators in bean sprouts via automated on-line polymeric monolith solid-phase extraction coupled with liquid chromatography tandem mass spectrometry

机译：通过自动在线聚合物整体萃取与液相色谱串联质谱法相结合的自动在线聚合物整体萃取，快速监测豆芽豆芽豆芽

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摘要

An automated on-line solid-phase extraction (SPE) following liquid chromatography tandem mass spectrometry was established for the fast determination of plant growth regulator residues in soybean sprout and mung bean sprout. The crude extracted specimens were directly purified on a poly (2-(dimethylamino) ethyl methacrylate-co-ethylene dimethacrylate) monolithic column which was well-defined as the on-line SPE adsorbent. Under the optimized conditions, the developed method gave the linear range of 0.3-50 ng/mL for gibberellin and 2,4-dichlorophenoxyacetic acid, 0.2-50 ng/mL for 4-chlorophenoxyacetic acid, and 0.5-50 ng/mL for 1-naphthaleneacetic acid (r = 0.998). The detection limits (S/N = 3) ranged from 1.0 to 2.5 mu g/kg and the recoveries for spiked soybean sprout samples were in the range of 75.0-93.3%. Besides, the total time for one analysis was 16 min. The reusability of the monolith was up to 600 extractions. The proposed process facilitated fully automated SPE and accurate determination in one step with rapidity, simplicity, and reliability.
机译：在液相色谱串联质谱之后，建立了一种自动在线固相萃取（SPE），为豆芽和绿豆新芽中的植物生长调节器残留物进行快速测定。将粗提取的样品直接纯化在聚（2-（二甲基氨基）甲基丙烯酸甲基丙烯酸乙烯二乙基二丙烯酸酯）单片柱上，其被定义为在线SPE吸附剂。在优化的条件下，开发方法使吉布林蛋白和2,4-二氯苯乙酸的线性范围为0.3-50ng / ml，对于4-氯苯甲酸0.2-50ng / ml，和0.5-50ng / ml - 萘酰基乙酸（R> = 0.998）。检测限率（S / N = 3）范围为1.0至2.5μg/ kg，并且尖刺大豆萌芽样品的回收率为75.0-93.3％。此外，一个分析的总时间为16分钟。单片的可重用性高达600升。该拟议的过程促进了全自动的SPE，并在一步中准确确定了快速，简单性和可靠性。

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