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like小木

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[交流] The ionization source and polarity in MS analysis

对质谱不懂 谁看一下啊
The ionization source and polarity in MS analysisionization source and polarity

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slowstar

木虫 (职业作家)


zehuac(金币+1):谢谢参与啦 2010-07-10 08:40:47
Specific analyte-solvent interactions, e.g., solubility effects, are most important in reversed-phase LC, because the interaction of the analyte with the bonded-phase material is a relatively weak, nonspecific Van der Waals interactions. The retention decreases with increasing polarity of the analyte. Mixtures of water or aqueous buffers and an organic modifier (methanol, acetonitrile, or tetrahydrofuran (THF)) are used as eluent. The percentage and type of organic modifier is the most important parameter in adjusting the retention of nonionic analytes. THF is generally not recommended for LC-MS applications, because of the possible formation of highly-reactive peroxide free radicals in the ion source. Because of the higher
solvent strength and the lower viscosity in mixtures with water, acetonitrile is often preferred over methanol.
精韧不怠,日进有功
9楼2010-06-23 11:04:54
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rain841230

捐助贵宾 (正式写手)

wypward:谢谢参与 2010-06-22 21:33:01
ionization source 离子源(产生的电子使样品离子化)
polarity 就是极性,具体什么意思看你的原文语境
2楼2010-06-22 21:30:21
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like小木

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引用回帖:
Originally posted by rain841230 at 2010-06-22 21:30:21:
ionization source 离子源(产生的电子使样品离子化)
polarity 就是极性,具体什么意思看你的原文语境

The ionization source and polarity in MS analysis can also influence metabolite coverage.
你说的我知道但是具体在句子里这个polarity怎么翻译
3楼2010-06-22 23:11:01
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zerohead

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wypward:谢谢参与 2010-06-23 15:20:23
polarity就是极性啦,这的MS应该是Materials Studio吧。
4楼2010-06-23 01:19:56
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