Research Article

OPCW Proficiency Test: A Practical Approach Also for Interlaboratory Test on Detection and Identification of Pesticides in Environmental Matrices

Figure 18

(a) Mass spectrum of compound VI from the OE sample and (b) MS of O-3-methylbutyl-S-ethyl methylphosphonothiolate VI, the synthesized reference chemical.
542357.fig.0018a
(a)
542357.fig.0018b
(b)