Can anyone help with bisphenol A in LC TOF MS?

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Bassam Faron Alfarhani

Thanks for your answers, i have tried different mobile phase with different percentages of formic acid and ammonium hydroxide and still see no peaks at all. the system already tuned. thanks

Markus Christ

Hello, maybe APPI (Atmospheric Pressure Photo Ionization) can help you : http://onlinelibrary.wiley.com/doi/10.1002/mas.10060/pdf