“Daily Dietary Lithium Intake in Belgium Using Duplicate Portion Sampling”, Rudy Van Cauwenbergh, Peter Hendrix, H. Robberecht, Hendrik Deelstra1999-03-01 (lithium-in-water)⁠:

For the first time, daily dietary lithium intake for adults in Belgium has been evaluated by duplicate portion sampling, the heating of the samples in a microwave oven and atomic absorption spectrometric determination of the element.

The mean intake value for adults (8.6±4.6 μg/day) is very low compared to the scarce literature data.

Since the lithium requirement of humans and animals is still unknown, no comparison could be made with RDA values.

[Keywords: lithium intake, duplicate portion sampling, Belgium]