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In-house validation of a UV spectrometric method for measurement of nitrate concentration in natural groundwater samples

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Abstract

This paper presents the validation and evaluation of measurement uncertainty of a method for quantitative measurement of nitrate concentration in various groundwater samples by means of molecular UV absorption spectrometry. A calibration study was conducted for the working range from 0.10 mg/L to 6.00 mg/L NO3 −, being accordingly determined detection and quantification limits of 0.07 mg/L NO3 − and 0.10 mg/L NO3 −, respectively. It was also proven that the method is accurate and precise. Selectivity and applicability were discussed. Measurement uncertainty was evaluated based on the validation data.

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Acknowledgements

This work was supported by a Grant of the Romanian National Authority for Scientific Research, CNCS–UEFISCDI, project number PN–RU–PD–2011–3–0081.

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Authors and Affiliations

  1. Emil Racoviţă Institute of Speleology of Romanian Academy, Calea 13 Septembrie, No. 13, 050711, Bucharest, Romania

    Alin Tudorache & Constantin Marin

  2. Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 2-14 Bd. Regina Elisabeta, 030018, Bucharest, Romania

    Daniela E. Ioniţă, Nicoleta M. Marin & Irinel A. Badea

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  1. Alin Tudorache
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  2. Daniela E. Ioniţă
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  3. Nicoleta M. Marin
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  4. Constantin Marin
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  5. Irinel A. Badea
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Correspondence to Alin Tudorache.

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Tudorache, A., Ioniţă, D.E., Marin, N.M. et al. In-house validation of a UV spectrometric method for measurement of nitrate concentration in natural groundwater samples. Accred Qual Assur 22, 29–35 (2017). https://doi.org/10.1007/s00769-016-1244-6

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  • DOI: https://doi.org/10.1007/s00769-016-1244-6

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