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Topic: mass shift  (Read 45 times) previous topic - next topic

mass shift

Hi all,

We are using Agilent 6560 IM-QTOF to run some standard compounds to generate in-house library.

After using MS-Dial to extract peak information, a lot of compounds have a big mass shift which is around 20 ppm (the mass accuracy in raw file (.d) is less than 5 ppm).
We have tried different importing methods, including directly drag and drop it into the MSDial or convert it to ibf file first, but both methods give us the same problem (mass shift). I am wondering if anyone also has the same problem and how you address it.

Thanks in advance.