[Determination of flumioxazin residue in foods using gas chromatography-mass spectrometry].
A method for the determination of flumioxazin residue in foods by gas chromatography-mass spectrometry (GC-MS) has been developed. The food sample was extracted with acetonitrile or ethyl acetate, concentrated in a rotary evaporator, then dissolved in acetonitrile-methyl benzene (3 : 1, v/v) and purified with an NH2-solid phase extraction (SPE) column. The final extract was analyzed by gas chromatography-mass spectrometry with selected ion monitoring mode (GC-MS-SIM). External standard method was used for the quantification. The mean recoveries of flumioxazin spiked in foods were 79.4% - 101%, and the relative standard deviations were 0.242% -7.15% (n = 10). The detection limit for each was 0.01 mg/kg. This method has high sensitivity, veracity and is suitable for the determination of pesticide residues in foods.
Lin
Li
L
Shenzhen Exit & Entry Inspection and Quarantine Bureau, Shenzhen 518067, China. linli1103@sohu.com
Ye
Gang
G
Xie
Liqi
L
Lan
Fang
F
Wu
Weidong
W
Jin
Baohui
B
D000818:Animals; D048588:Benzoxazines / Q000032:analysis* / Q000302:isolation & purification; D005227:Fatty Acids / Q000737:chemistry / Q000302:isolation & purification; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D057230:Limit of Detection; D016014:Linear Models; D010573:Pesticide Residues / Q000032:analysis* / Q000302:isolation & purification; D010797:Phthalimides / Q000032:analysis* / Q000302:isolation & purification; D015203:Reproducibility of Results; D012997:Solvents / Q000737:chemistry; D013997:Time Factors
D048588:Benzoxazines; D005227:Fatty Acids; D010573:Pesticide Residues; D010797:Phthalimides; D012997:Solvents; C106487:flumioxazin