International interlaboratory study for the determination of the Fusarium mycotoxins zearalenone and deoxynivalenol in agricultural commodities.
JOSEPHS, R.D., SCHUHMACHER, R. and KRSKA, R.
Food Additives and Contaminants 18: 417 – 430.
2001
บทคัดย่อ
Twenty – eight laboratories from 12 different countries participated in an interlaboratory study for the determination of ZEA in maize and DON in maize and wheat employing their usual in – house methods. For the final separation and quantification either GC, HPLC, TLC or ELISA were employed. Coefficients of variation (CV) between laboratory mean results ranged from 28 to 41% for ZEA and from 32 to 38% for DON. A good trueness was obtained for the wheat samples spiked with DON at 475 mg/kg. The high CVs can be traced back to problems occurring by determination of the concentration of the participants’ own calibrant solutions. Additionally, the variability of the results is strongly influenced by the use of different final separation and quantification procedures.