All pesticides
were of certified quality and purchased from Dr. Ehrenstorfer (Augsburg,
Germany), Sigma–Aldrich (Steinheim, Germany), J&K Chemical
(Beijing, China). Full name, chemical formula, and accurate mass are
listed inSupporting Information Table-S1.
HPLC-grade acetonitrile, methanol, and acetone were provided from
Sigma–Aldrich (Merck, Germany). HPLC-MS grade formic acid and
ammonium acetate were purchased from Sigma–Aldrich. Deionized
water was obtained using a Milli-Q plus ultrapure water system from
Millipore (Miford, USA). The sorbents of primary second amine (PSA),
multiple walled carbon nanotubes (MWCNTs), and octadecylsilane (C18)
were provided from Agela (Tianjin, China). Analytical-grade sodium
chloride and anhydrous magnesium were provided from Zhejiang Medicine
(Hangzhou, China), and baked for 3 h at 650 °C prior to use.
were of certified quality and purchased from Dr. Ehrenstorfer (Augsburg,
Germany), Sigma–Aldrich (Steinheim, Germany), J&K Chemical
(Beijing, China). Full name, chemical formula, and accurate mass are
listed in
HPLC-grade acetonitrile, methanol, and acetone were provided from
Sigma–Aldrich (Merck, Germany). HPLC-MS grade formic acid and
ammonium acetate were purchased from Sigma–Aldrich. Deionized
water was obtained using a Milli-Q plus ultrapure water system from
Millipore (Miford, USA). The sorbents of primary second amine (PSA),
multiple walled carbon nanotubes (MWCNTs), and octadecylsilane (C18)
were provided from Agela (Tianjin, China). Analytical-grade sodium
chloride and anhydrous magnesium were provided from Zhejiang Medicine
(Hangzhou, China), and baked for 3 h at 650 °C prior to use.