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summerxu

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[求助] 求助:毛细管电泳 样品不出峰,一直找不到原因

安捷伦CE,新管子,分别用甲醇,酸碱等溶液活化过,用10mM的硼砂作为缓冲液,正向电压20KV, 样品为DMF(只是作为测试是否出峰),检测波长200nm,压力进样和电压进样均不出峰。电话咨询过工程师,问题描述后,工程师认为硬件没有问题。管子是新的,缓冲溶液也重新配过,样品确定没有问题(内压冲样品可以看到很高的紫外吸收峰),实在不知道问题出在哪里,应该怎样解决,希望大家帮忙,谢谢!
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