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首页> 外文期刊>Journal of mass spectrometry: JMS >A novel and rapid extraction protocol for sensitive and accurate determination of prochloraz in orange juice samples: Vortex-assisted spraying-based fine droplet formation liquid-phase microextraction before gas chromatography-mass spectrometry
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A novel and rapid extraction protocol for sensitive and accurate determination of prochloraz in orange juice samples: Vortex-assisted spraying-based fine droplet formation liquid-phase microextraction before gas chromatography-mass spectrometry

机译：橙汁样品中普罗克拉兹敏感和准确测定的新型和快速提取方案：气相色谱 - 质谱前的涡旋辅助喷涂基微小液滴形成液相微萃取

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摘要

A novel, ecofriendly, and easy extraction and preconcentration method named as vortex-assisted spraying-based fine droplet formation liquid-phase microextraction was proposed for the determination of prochloraz at trace levels in orange juice samples by gas chromatography-mass spectrometry (GC-MS). In this novel system, extraction solvent is dispersed by the help of spraying apparatus instead of dispersive solvent. Various parameters of the method were carefully optimized to increase signal-to-noise ratio of the analyte. Under the optimum chromatographic and extraction conditions, limit of detection and limit of quantification were calculated as 3.2 and 10.8 mu g/kg, respectively. Moreover, enhancement in quantification power for the GC-MS system was determined as 372 folds based on LOQ comparison. Relative recovery results for orange juice samples were found to be between 95.0-107.7% by utilizing matrix matching calibration. Furthermore, the developed method may be used to efficiently and simply extract other organic compounds for their determinations in several matrices.
机译：提出了一种以涡旋辅助喷涂的微小液滴形成液相微萃取液相微萃取的新型，生态繁体，易肠道浓度和预浓度，用于通过气相色谱 - 质谱法测定橙汁样品中的痕量水平的prochloraz（GC-MS ）。在这种新型系统中，通过喷涂装置而不是分散溶剂的帮助分散萃取溶剂。仔细优化该方法的各种参数以增加分析物的信噪比。在最佳色谱和提取条件下，分别计算检测限量和定量限制为3.2和10.8μg/ kg。此外，基于LOQ比较，确定了GC-MS系统的量化功率的增强。通过利用矩阵匹配校准，发现橙汁样品的相对恢复结果在95.0-107.7％之间。此外，开发方法可用于有效并简单地提取其他有机化合物以在几种基质中的测定。

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