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LCMS Help!

Discussions about GC-MS, LC-MS, LC-FTIR, and other "coupled" analytical techniques.

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LCMS Help!

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vvelozb
Hi,

I am fairly new to LCMS and am doing pesticides analysis. I have been getting hits for some analytes with 58% concentration and a good peak shape but the confirming peak has double the concentration (130%). Does someone know why this could be?

Re: LCMS Help!

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Steve Reimer
Are these in samples compared to the standards?
Do you have something coeluting that contributes to the qualifier response?
Is it predictable or random?
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