Skip to main content
Fig. 4 | Journal of Cannabis Research

Fig. 4

From: A LC-MS/MS method with electrospray ionization and atmospheric pressure chemical ionization source for analysis of pesticides in hemp

Fig. 4

Effect of mobile phase composition on PCNB (a) and superoxide ion response (b). Both superoxide ion (O2) and PCNB signal increased roughly by a factor of 300 and 30, respectively, when we changed the mobile phase from a mixture of methanol and water with 0.1% formic acid and 2 mM ammonium formate to a mixture of methanol and water. Mobile phase 1: methanol and water with 0.1% formic acid and 2 mM ammonium formate. Mobile phase 2: methanol and water

Back to article page