Skip to main content


This section allows you to view all Topics made by this member. Note that you can only see Topics made in areas you currently have access to.

Topics - DeborahMaus

Other / MAVEN
Dear Metabolomicians!

Does anyone of you use MAVEN?

I am having problems visualizing data. I ran an untargeted experiment with data containing MS1 and MS2 (Top10) spectra (QE Thermo Fisher). I converted the .raw files to .mzXML and opened it in MAVEN.

In the attached screenshot you see the dashed TIC (why can't I get it smaller? How can I change the appearance?) and the EIC for the positively charged glutamate ion. Believe me, in Compound Discoverer or the Qualbrowser glutamate gives a strong and beautiful peak in the same dataset.

Do you have a hint what I should be looking for? Or does MAVEN simply not work with untargeted data from MS1+2 Top10 experiments?

Chromatography / Buffering both Eluents - Acetonitrile with Ammonium Carbonate
Good morning fellow Metabolomicians!

We observe a Retention Time drift but a minor one. And now, while I am in the middle of optimizing, I am thinking:

Would it be better to change the apolar eluent from pure AcN to AcN with 5% water containing 10mM Ammonium Carbonate?

Thanks in advance for your effort to help to newbee! :)

Greetings from Germany!

P.S.: HILIC mode! Polar eluent: 10mM Ammonium Carbonate in water.