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Waters offers a comprehensive range of analytical system solutions, software, and services for scientists. Liquid Chromatography. Mass Spectrometry. Waters is the leading provider of lab equipment, supplies and software for scientists across the world. Easily research and order everything your lab needs! Waters offers a comprehensive range of analytical system solutions, software, and services for scientists. Liquid Chromatography. Mass Spectrometry. Waters is the leading provider of lab equipment, supplies and software for scientists across the world. Easily research and order everything your lab needs!

SPE - 通过固相萃取进行样品富集和纯化

为何使用固相萃取（SPE）技术

1. 您需要从样品中去除特定干扰物，以免它们在目标分析物的检测和定量过程中影响实验结果。在此处所示的示例中，不适当的样品制备方案未能去除干扰物，导致提取物呈现出残留的黄色干扰物，色谱图中目标分析物与多个干扰峰发生了重叠。

2. 您需要提高初始样品中目标分析物的浓度，以便所用的分析技术能够更轻松地对其进行检测和准确定量。如果目标分析物可被较强地保留，那么可能需要在SPE色谱柱上加载较大的样品量，随后仅以极小体积的洗脱液将此分析物洗脱下来，由此提高样品中分析物的浓度。

3. 您需要去除样品中的干扰物（即使不可见），这些干扰物会在质谱检测中抑制目标分析物的信号。在此处的示例中，蛋白沉淀法无法去除血浆提取物中的磷脂，从而造成严重的离子抑制。优化的复合模式SPE方案可获取更纯净的提取物，并可尽可能地降低离子抑制效应。

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Goals and Benefits of SPE Discover all the goals and benefits of solid-phase extraction, including the importance of sample preparation.

SPE Method Development What is solid-phase extraction method development? Discover the proper SPE definition, steps and general elution protocols here.

SPE固相萃取方法开发选择色谱模式 SPE固相萃取方法开发选择色谱模式

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