A Novel Application of Natural Peat for Solid-Phase Extraction of Pyrimethanil, Flumetralin, and Kresoxim-Methyl in Water Using Gas Chromatography-Mass Spectrometry

Table 1

Influence of different sorbents on pesticide recoveries (RSD%) using dichloromethane as eluting solvent during SPE procedure with GC-MS analysis. Water samples spiked at 2.5 𝜇g L^−1  *(𝑛=7).

Sorbent	Recovery (%) ± RSD (%)^*
	Pyrimethanil	Flumetralin	Kresoxim-methyl
C18-bonded silica	102±5.2	79±6.1	80±8.8
Florisil	39±1.4	80±4.3	14±0.3
Silica gel	7±0.3	70±1.6	17±0.2
ENVI-Carb	74±6.7	73±1.4	80±7.4
ENVI-Carb/LC-NH2	54±3.4	41±2.9	52±2.7