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首页> 外文期刊>Journal of mass spectrometry: JMS >Development of sheath-flow probe electrospray ionization (SF-PESI)
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Development of sheath-flow probe electrospray ionization (SF-PESI)

机译：鞘流探针电喷雾电离（SF-PESI）的开发

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摘要

Probe electrospray ionization (PESI) uses a sharp solid needle as electrospray emitter. This method was found to be applicable to the analysis of real-world samples with high concentrations of salts and detergents without sample pretreatment. Since PESI is only applicable to wet samples but not to dry samples, sheath-flow PESI (SF-PESI) has been developed. The metal needle was inserted into the fine plastic capillary with a protrusion of 0.1-0.2mm from the capillary terminus. The solvent was supplied continuously through the capillary. At the lowest position of the probe, solvent flowing out from the capillary makes the sample wet and extracts the analytes from the surface. The extracted analytes were electrosprayed at the highest position of the needle. SF-PESI was successfully applied to samples such as narcotics, tablets, bill, fruits, potatoes, etc.
机译：探针电喷雾电离（PESI）使用锋利的实心针作为电喷雾发射器。发现该方法适用于分析高浓度盐和去污剂而无需样品预处理的真实样品。由于PESI仅适用于湿样品而不适用于干燥样品，因此已经开发了鞘流PESI（SF-PESI）。将金属针插入细塑料毛细管中，该毛细管距毛细管末端的突出距离为0.1-0.2mm。通过毛细管连续地供应溶剂。在探针的最低位置，从毛细管流出的溶剂会使样品变湿，并从表面提取分析物。提取的分析物在针头的最高位置进行电喷雾。 SF-PESI已成功应用于麻醉品，片剂，钞票，水果，土豆等样品。

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