In the case of substances with small concentrations in Organic substance, liquid or gas chromatography with tandem mass spectrometry methods have the required sensitivity. While in the discussed situation, a liquid chromatograph which has a triple quadrupole mass spectrometer operating in a number of response monitoring (MRM) mode was employed https://phenibut-faa79901.popup-blog.com/30134651/5f-mdmb-2201-options