[Determination of T-2 toxin in cereal grains by high performance liquid chromatography with fluorescence detection after immunoaffinity column clean-up and precolumn derivatization].
A method has been developed for the determination of T-2 toxin in cereal grains by high performance liquid chromatography with fluorescence detection after immunoaffinity column clean-up and precolumn derivatization. The derivatization reaction was used to develop a sensitive, reproducible and accurate method for the determination of T-2 toxin in wheat, corn, barley and rice. T-2 toxin was extracted with methanol-water (80: 20, v/v), purified by immunoaffinity columns containing antibodies specific for T-2 toxin, and quantified by reversed-phase high performance liquid chromatography with fluorescence detection (excitation wavelength, 381 nm; emission wavelength, 470 nm) after derivatization with 1-anthroylnitrile (1-AN) and 4-dimethylaminopyridine (DMAP). ZORBAX Eclipse XDB-C18 column and mobile phase of acetonitrile-water (80: 20, v/v) were used for the analysis. Recoveries from the different cereals spiked with T-2 toxin at levels ranging from 0.01 to 1.5 microg/g were from 79.7% to 94.5%, the relative standard deviations were lower than 7% and the limit of detection was 0.01 microg/g based on a signal-to-noise ratio of 3: 1.
Li
Jun
J
Liaoning Entry & Exit Inspection and Quarantine Bureau, Dalian, China. lj666623@sina.com
Xu
Ye
Y
Sui
Kai
K
Wei
Feng
F
Zhao
Shoucheng
S
Wang
Yuping
Y
D000097:Acetonitriles / Q000737:chemistry; D000821:Animal Feed; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002523:Edible Grain / Q000737:chemistry*; D005453:Fluorescence; D005506:Food Contamination / Q000032:analysis*; D011786:Quality Control; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013605:T-2 Toxin / Q000032:analysis*
D000097:Acetonitriles; D013605:T-2 Toxin; C032159:acetonitrile