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Detection problems of mono and di-tms forms of organic acids
Discussions about GC-MS, LC-MS, LC-FTIR, and other "coupled" analytical techniques.
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Hello, I create this post because I have a problem in my laboratory regarding the dosage of organic acids by gc ms. And more particularly concerning isovalerylglycine. In recent weeks, the form di-tms has sometimes no longer been detected randomly. And at the same time, the mono-tms form is greatly increased. By re-injecting the sample, the di-tms form sometimes reappears (with a sharp drop in the mono-tms form), but not always... So I wanted to know if some of you have already observed this phenomenon? And if there was an explanation? Thank you in advance for your help
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