Skip to main content
. 2021 May 19;594(7861):71–76. doi: 10.1038/s41586-021-03559-3

Extended Data Table 1.

Analytical data for grain micronutrient concentration

graphic file with name 41586_2021_3559_Tab1_ESM.jpg

Top, numbers of grain analysis runs for microwave digestion and ICP–MS steps for the grain surveys, including limit of detection (LOD) and certified reference material (CRM) recovery values for Ca, Fe, Se and Zn from wheat flour (SRM 1567b, NIST). Bottom, summary statistics for grain concentrations of Ca, Fe, Se and Zn in teff and wheat in Ethiopia, and maize in Malawi. The selected scale used for analysis is shown in italic.