title: A new method for the quantitation of aflatoxin M1 in urine by high performance liquid chromatography and its application to the etiologic study of hepatoma.
abstract: A high performance liquid chromatographic (HPLC) method for the analysis of aflatoxin M1 (AFM1) in urine is described. Urine samples were treated with saturated lead acetate and AFM1 was extracted with chloroform. After washing with water to remove impurities the compound was derivatized with trifluoroacetic acid and the AFM1 derivative was analyzed quantitatively by HPLC. The sample pretreatment is simple and more selective. A good line correlation between AFM1 peak height and its concentration was obtained when AFM1 content was in the range of 50-400 pg. The ratio of recovery was 87.42%. Sensitivity is 0.01 ppb. The method is applicable to trace analysis. Results in urine of residents who live in the high/low liver cancer incidence area in Fushui county were the same as that of previous epidemiological investigation.
authors.affiliation: Guangxi Cancer Institute, Nanning, China.
authors.forename: Z H
authors.initials: ZH
authors.lastname: Liu
authors.forename: W S
authors.initials: WS
authors.lastname: Tu
authors.forename: D R
authors.initials: DR
authors.lastname: Li
authors.forename: Y D
authors.initials: YD
authors.lastname: Li
authors.forename: C H
authors.initials: CH
authors.lastname: Xie
authors.forename: Y Z
authors.initials: YZ
authors.lastname: Yang
authors.forename: B B
authors.initials: BB
authors.lastname: Qin
mesh_terms: D016604:Aflatoxin B1; D016607:Aflatoxin M1; D000348:Aflatoxins / Q000493:pharmacokinetics / Q000652:urine*; D000818:Animals; D006528:Carcinoma, Hepatocellular / Q000139:chemically induced* / Q000453:epidemiology / Q000652:urine; D002681:China; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D008113:Liver Neoplasms / Q000139:chemically induced* / Q000453:epidemiology / Q000652:urine; D008832:Microchemistry; D011786:Quality Control; D014417:Tupaia / Q000652:urine
chemical_list: D000348:Aflatoxins; D016607:Aflatoxin M1; D016604:Aflatoxin B1