Efficacy of some washing solutions for removal of pesticide residues in lettuce

Beni-Suef University Journal of Basic and Applied Sciences

Table 1 Some physicochemical properties and Maximum residue limits of the pesticides

Analyte	Purity of certified pesticide reference %	Commercial name	EU-MRL^a	Group	Phytomobility	Solubility in water (mg L⁻¹) (20 °C)	LogP_O/W)^b (pH 7, 20 °C)
Boscalid	99.02	Signum WG	50	Fungicide	Systemic	4.6	2.96
Pyraclostrobin	99.57	Signum WG	2	Fungicide	Systemic	1.9	3.99
Pyrimethanil	99.57	Luna Tranquility SC 500	20	Fungicide	Non-systemic	110	2.84
Fluopyram	99.66	Luna Tranquility SC 500	15	Fungicide	Non-systemic	16	3.3
Fluopicolide	99.00	Infinito SC 687,5	9	Fungicide	Systemic	2.8	2.9
Deltamethrin	99.62	Demond EC 2.5	0.5	Insecticide	Non-systemic	0.0002	4.6
Sulfoxaflor	99.23	Breaker™ 240 SC	4	Insecticide	Systemic	568	0.802

^aEU-MRL: European Union-Maximum Residue Limit (µg kg⁻¹) for lettuce [16]
^bOctanol-water partition coefficient (LogP_O/W) of pesticides represents the ratio of the solubility of a compound in octanol (a non-polar solvent) to its water solubility (a polar solvent)” [27]