库仑和高库仑ECD操作方式的表征

Mai 1983 Pub Date : 1983-12-31 DOI:10.1080/10256018308544871

P. Popp, J. Leonhardt

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引用次数: 0

摘要

如果每个通过ECD的样品分子都转化为一个负离子，并且每个负离子引起电离电流的减小，则给出了库仑模式的操作。在这种情况下，探测器的灵敏度为96500 C/mol。如果离解过程中的碎片多次经历电子捕获，并且使用空间电荷的增强效应，则给出了高比色响应。在这种情况下，ECD的灵敏度超过法拉第数给出的上限。介绍了两种egd模式的工作条件。

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Characterization of Coulometric and Hypercoulometric ECD Mode of Operation

The coulometric mode of operation is given, if each sample molecule passing the ECD is converted into a negative ion and if each negative ion causes a decrease of the ionization current. The sensitivity of the detector in this case amounts to 96500 C/mol. A hypercoulometric response is given, if fragments from dissociative processes undergo electron capture at several times and if the enhancing effect of space charges is used. In this case the sensitivity of the ECD exceeds the upper limit given by Faraday's number. The operation conditions of both EGD-modes are described.

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来源期刊

Mai 1983

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