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http://www.chromforum.org/viewtopic.php?t=121752

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Posted: Tue Dec 12, 2023 3:01 pm
by r2023
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Re: Adduct [M+45]+ in ESI positive mode

Posted: Tue Dec 12, 2023 4:50 pm
by Multidimensional
why not tell us about the method

Re: Adduct [M+45]+ in ESI positive mode

Posted: Wed Dec 13, 2023 9:11 am
by bunnahabhain
Formate will not produce a positively charged [M+45] ion. More likely is [M+2 Na - H]. Sodium is released from solvent bottles, or may be present in your sample matrix in sufficient amounts.
Best regards,
Jörg
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