We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Uncertainty in aflatoxin B<sub>1</sub> analysis using information from proficiency tests.
- Authors
Maroto, Alicia; Boqué, Ricard; Riu, Jordi; Ruisánchez, Itziar; Òdena, Marta
- Abstract
We describe how to calculate uncertainty in the determination of aflatoxin B1 in nuts and maize using an HPLC method with prederivatisation with trifluoroacetic acid and fluorescence detection. The uncertainty is easily calculated using the information obtained from the participation in several proficiency tests. All the sources of uncertainty are grouped in two terms: (1) matrix variability, intermediate precision and sample heterogeneity, and (2) method concordance. This methodology has the advantage that no extra work needs to be done because all the information to calculate uncertainty comes from proficiency tests. The uncertainty values were calculated using samples whose concentration ranged between 2 and 20 μg L−1. The relative standard uncertainty computed for aflatoxin B1 was 16.3%.
- Subjects
AFLATOXINS; MYCOTOXINS; FLUORESCENCE; CHROMATOGRAPHIC analysis; BIOCHEMISTRY
- Publication
Analytical & Bioanalytical Chemistry, 2005, Vol 382, Issue 7, p1562
- ISSN
1618-2642
- Publication type
Article
- DOI
10.1007/s00216-005-3321-2