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

Table 3 Uncertainty budget for the baby food material

The first six rows represent the terms of Eq. 2; the row labeled w _X,i lists the six individual results (in italics the result corresponding to the first six rows); w _T is the result of Eq. 4; the number in parentheses is the numerical value of u _c referred to the corresponding last digits of the quoted result; the last column shows the percent contribution to the respective u _c