Fig. 6

Long-term stability data over 5 days of 330 injections of six pesticides (carbaryl, phosmet, dimethoate, imidacloprid, pyridaben, and malathion) spiked in hemp using the LC-MS/MS method with an ESI source. The relative standard deviation (RSD) of signal for six analytes in hemp was less than 5% over a period of 5 days