Research Article

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

Figure 7

MS of methyl derivative of spiking chemical II in the water sample (methylated II) (a) was compared with the spectrum of synthesized reference material—O-methyl O-1,3-dimethylbutyl methylphosphonate 7 (b). Both MS and were identical.
542357.fig.007a
(a)
542357.fig.007b
(b)