Determination of low concentrations of lithium in public water

  • Sergio DOVIDAUSKAS Instituto Adolfo Lutz - Secretaria de Estado da Saúde - SES - SP
  • Isaura Akemi OKADA Instituto Adolfo Lutz - Secretaria de Estado da Saúde - SES - SP
  • Felipe Rodrigues dos SANTOS Instituto Adolfo Lutz - Secretaria de Estado da Saúde - SES - SP
Keywords: method validation, ion chromatography, lithium, water supply.

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%.    

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Published
2021-02-10
How to Cite
DOVIDAUSKAS, S., OKADA, I. A., & Rodrigues dos SANTOS, F. (2021). Determination of low concentrations of lithium in public water. Revista Do Instituto Adolfo Lutz, 78(1), 1 a 5. Retrieved from https://periodicoshomolog.saude.sp.gov.br/index.php/RIAL/article/view/34533
Section
ORIGINAL ARTICLE