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

Table 1

The scheduled chemicals found in the investigated environmental samples.

Sample	Compound name, no. (RI)	Compound structure	Molecular formula; [m.w.]	Schedule no.
W	𝑂-3-Methylbutyl methylphosphonate I; (1191) as Me ester; (1310) as TMS ester		C6H15O3P; [166]	2.B.4
W	𝑂-1,3-Dimethylbutyl methylphosphonate II; (1202) as Me ester; (1316) as TMS ester		C7H17O3P; [180]	2.B.4
S	𝑂-2-Methylpentyl 𝑂-propyl ethylphosphonate III (1502)		C11H25O3P; [236]	2.B.4
S	𝑂-Ethyl-𝑂-2-ethylhexyl methylphosphonate IV (1509)		C10H21O3P; [236]	2.B.4
OE	O,O-Diisopropyl 𝑁-methyl-𝑁-propyl-phosphoroamidate V (1310).		C10H24NO3P; [237]	2.B.6
OE	𝑂-3-Methylbutyl 𝑆-ethyl methylphospho nothiolate VI (1414)		C10H21O2PS; [210]	2.B.4
OE	O,O-Dipropyl 𝑁-methyl-𝑁-isopropyl-phosphoramidate VII (1423, 1426).		C10H24NO3P; [237]	2.B.6
OE	𝑂-Ethyl 𝑆-butyl isopropylphospho nothiolate VIII (1468)		C10H21O3PS; [236]	2.B.4