• 97%), stability (RSD  less then  2.52%) and recoveries (96.96%-98.52%, RSD  less then  3.24%), and no significant differences were observed between the external standard method and the new method as determined by calculating standard method difference. Overall, the study suggests that the simultaneous quantitative analysis of main Q-marker in G.…[Read more]

  • Markussen Leblanc posted an update 7 months ago

    In this paper, an ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF HRMS) method was developed and validated for screening, confirmation and quantitation of 31 anti-impotence compounds potentially illegally added to herbal-based dietary supplements. The analytes were well separated…[Read more]

  • Markussen Leblanc became a registered member 7 months ago