Posted by: tvasailor | May 1, 2011

Unusual Doubly Charged Ion in EI Spectrum of Phosphate

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The intensity of doubly charged ions are normally relatively small in electron ionization (EI) mass spectra and not very useful in practical applications to chemical analyses. However, we noted one that was almost the base peak in a phosphate spectrum!  The same type of doubly charged ion is almost nonexistent in the EI spectrum of the corresponding phosphite.


See the following link for details of our phosphate/phosphite example:


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