Table 3. Maximum water and soil concentrations of imidacloprid, fipronil and fipronil sulfone in rice paddy fields sampled in previous studies with mesocosm and microcosm paddy experiments.

These data are for concentrations following application at 10,000 g/ha as a commercial formulation.

	Imidacloprid	Fipronil	Fipronil sulfone
Water (μg/L)	30.2 [33]
	39 [37]
	49 [71]	1.0 [71]
	52.8 [58]	1.3 [58]
	58.6–73.9 [40]
	189 [41]
	240 [72]
		0.9–2.5 [34]	0.4–0.9 [34]
	157.5 [73]
Soil (μg/kg)	278.4 [33]
	20 [37]
		192 [71]
	227.2–276.2 [40]
		65.8–92.1 [34]	9.7–59.2 [34]
	13.55 [73]