Skip to main content

Table 4 The robust means of the proficiency test (PT) and the assigned values with their uncertainties determined with this study

From: Two-dimensional heart-cut LC-LC improves accuracy of exact-matching double isotope dilution mass spectrometry measurements of aflatoxin B1 in cereal-based baby food, maize, and maize-based feed

Material PT robust mean (μg/kg) Assigned value x a (μg/kg) Expanded uncertainty U(x a ) (μg/kg) Relative expanded uncertainty (%) Coverage factor (k)
Baby food 0.20 0. 197 0.017 8.9 2
Maize 2.8 3.1 0.14 4.6 2
Animal feed 8.6 9.9 0.66 6.7 2