Keywords
ion chromatography
lithium
water supply
How to Cite
Abstract
This note presents the validation of a method for determining the lithium at concentrations less than
40 μg L‑1 in the public water supply, by using the ion chromatography and external calibration, and
the analytical curve was obtained by the linear regression (ordinary least squares). The employed
method is selective, showing the detection limit equal to 1.0 μg L‑1 and the quantification limit equal
to 2.0 μg L‑1. Recovery tests in three concentration levels presented results from 99.4 to 101.9%. On
the precision evaluation in the same three concentration levels, the coefficients of variation exhibited
values between 1.1 and 4.0%.
References
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