Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The robust means of the proficiency test (PT) and the assigned values with their uncertainties determined with this study
| 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 |
