title: [Determination of aflatoxin B1, B2, G1, G2 in Ben Lamge granules by HPLC-FLD after multi-pretreatment clean-up].
abstract: To establish a multi-pretreatment method for the determination of aflatoxin B1, B2, G1, G2 in Chinese patent medicines, aflatoxins were analyzed by high performance liquid chromatography-fluorescence detector with post-column derivatization, after the multi-pretreatment of samples. The results showed that after the samples extracted with MeOH-H2O, dehydrated by anhydrous magnesium sulphate and sodium chloride, and finally purified by neutral alumina, the impurity interference of different sources in Chinese patent medicines matrix can be effectively removed, and the main peak can be nicely separated from the impurity peak. The detection limits were 0.25, 0.25, 0.50, 0.25 μg x L(-1) for AFB1, AFB2, AFG1, AFG2, respectively. The quantification limits were 1.00, 0.50, 1.00, 0.50 μg x L(-1), respectively. Aflatoxin B1, G1 showed a good linear relationship at a range of 1.0-50 μg x L(-1), aflatoxin B2, G2 at a range of 0.5-12.5 μg x L(-1) (R2 > 0.99). The average recovery was 80.40% - 108.6%. The present method is simple, reproducible with the reasonable recoveries and can be applied for the determination of aflatoxins in Chinese patent medicines.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Zhang
authors.forename: Cong-cong
authors.initials: CC
authors.lastname: Ran
authors.forename: Dan
authors.initials: D
authors.lastname: Chen
authors.forename: Jun-mei
authors.initials: JM
authors.lastname: Li
authors.forename: Ye
authors.initials: Y
authors.lastname: Jiang
mesh_terms: D000348:Aflatoxins / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004304:Dosage Forms; D004340:Drug Contamination; D004365:Drugs, Chinese Herbal / Q000032:analysis*
chemical_list: D000348:Aflatoxins; D004304:Dosage Forms; D004365:Drugs, Chinese Herbal