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- Posts: 44
- Joined: Tue Oct 04, 2011 9:14 am
We've just had a PM done on a Quantum Access triple quad and something curious has happened. We are analysing Fumonisins in cereals and beer using a Poroshell column and H20/ACN + acetic acid mobile phase.
We monitor 2 transitions for B1 722-528 and 722-352 and 3 transitions for B2 706-512, 706-354, 706-336. Before the PM and as long as I can remember we have quantified using the 722-352 and 706-336 as these gave the biggest responses. After the PM these have flipped with 722-528 and 706-512 giving the largest peak areas. Obviously the PM has changed something, but is it something to be worried about?
Thanks in advance
Andy