Good afternoon!!
I’m a Brazilian student who works with metabolomics, and I would like to ask
you some questions regarding the tool MZmine 2.9. I read the manual section on
Mzmine 2.9 "Adduct search" where it says that I have to select the possible
options "sodium", "potassium" ... etc., if the data comes from a positive
ionization mode of LC / MS. My First question is: Do I need to build a database
of possible masses of substances, adding them the isotopic masses of sodium,
potassium, etc. (Custom database search)? The second one is: Should I build
another database of possible masses of substances, this time subtracting from
them the required mass in case the analysis is performed in negative ionization
mode? I really appreciate if you could answer these questions or if you could
forward this e-mail to the person in charge of those issues. Best regards,
Felipe Antunes dos Santos
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