Fig. 3From: A LC-MS/MS method with electrospray ionization and atmospheric pressure chemical ionization source for analysis of pesticides in hempa The response for PCNB with a signal to noise of 25 in the hemp matrix spiked at a level of 0.010 μg/g. b PCNB response in the blank hemp matrix shows no matrix interference since matrix blanks show very little signal with random electrical noise and no matrix interferenceBack to article page