Six commercial formulations, with different composition, have been characterized in the present study: FLINT MAX (50% tebuconazole, WG); MASSOCUR 12.5 EC (12.5% myclobutanil, EC); IMPACT EVO (12.5% flutriafol, SC); TOPAS (19.4% penconazole, EW); LATINO (formerly known as MITRUS, 12.5% myclobutanil, EC); and IMPALA STAR (2.5% fenbuconazole, EW). These pesticide formulations were acquired from various vendors, and they are described in detail in Supporting Information Table S1 .
Analytical standards of the compounds glyceryl monostearate, 1‐monopalmitin, hexaethylene glycol and 1,2‐benzisothiazol‐3(2H)‐one were purchased from Sigma‐Aldrich (St. Louis, MO, USA). Dimethyl sulfoxide (DMSO) (≥99.7% of purity) and N,N‐dimethyldecanamide were acquired from Honeywell Riedel‐de‐Haёn (Seelze, Germany).
Methanol (99.9% purity) and water, both LC‐MS grade, were obtained from Honeywell Riedel‐de‐Haёn and from JT Baker (Deventer, Netherlands), respectively. Formic acid was purchased from Fisher Scientific (Erembodegem, Belgium).
A mixture of acetic acid, caffeine, Met‐Arg‐Phe‐Ala‐acetate salt and Ultramark 1621 (ProteoMass LTQ/FT‐hybrid ESI positive and negative) from Thermo‐Fisher (Waltham, MA, USA) were employed for the accurate mass calibration of the Q‐Orbitrap analyzer.
Analytical standards of the compounds glyceryl monostearate, 1‐monopalmitin, hexaethylene glycol and 1,2‐benzisothiazol‐3(2H)‐one were purchased from Sigma‐Aldrich (St. Louis, MO, USA). Dimethyl sulfoxide (DMSO) (≥99.7% of purity) and N,N‐dimethyldecanamide were acquired from Honeywell Riedel‐de‐Haёn (Seelze, Germany).
Methanol (99.9% purity) and water, both LC‐MS grade, were obtained from Honeywell Riedel‐de‐Haёn and from JT Baker (Deventer, Netherlands), respectively. Formic acid was purchased from Fisher Scientific (Erembodegem, Belgium).
A mixture of acetic acid, caffeine, Met‐Arg‐Phe‐Ala‐acetate salt and Ultramark 1621 (ProteoMass LTQ/FT‐hybrid ESI positive and negative) from Thermo‐Fisher (Waltham, MA, USA) were employed for the accurate mass calibration of the Q‐Orbitrap analyzer.