Estimation of measurement uncertainty for the determination of aflatoxin M1 in milk using immunoaffinity clean-up procedures |
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Authors: | Giovanni Calaresu Patrizia Piras Gavina Carta Roberta Galarini Giannina Chessa |
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Institution: | (1) Istituto Zooprofilattico Sperimentale della Sardegna, Via Duca degli Abruzzi, 8-07100 Sassari, Italy;(2) Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche, Perugia, Italy |
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Abstract: | A measurement uncertainty estimated for aflatoxin M1 determination in milk sample has been calculated using data generated from analytical method validation studies. The protocol
adopted is described in detail in document LGC/VAM/1998/088. The uncertainty budget was based on precision, trueness and ruggedness
data. The individual contributions are described in detail. The expanded uncertainty for aflatoxin M
1 at a concentration of 20 ng L−1 was estimated as 2.81 ng L−1. This was calculated using a coverage factor of two which gives a level of confidence of approximately 95%.
Presented at AOAC Europe / Eurachem Symposium March 2005, Brussels, Belgium |
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Keywords: | Aflatoxin M1 Uncertainty Precision Trueness Ruggedness |
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