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

Figure 21

Comparison of electron ionization (El), as well as CH₄CI and isobutane chemical ionization (CI) mass spectra of O,O-diisopropyl-N-methyl-N-propylphosphoramidate, the compound V (𝑅_𝑇 = 12.66 min) from the organic extract sample EO.

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