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

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• 作者：Alin Tudorache ; Daniela E. Ioniţă ; Nicoleta M. Marin…
• 关键词：Nitrate measurement ; UV spectrometry ; Groundwater ; Validation ; Measurement uncertainty
• 刊名：Accreditation and Quality Assurance
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：22
• 期：1
• 页码：29-35
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Analytical Chemistry; Food Science; Biochemistry, general; Commercial Law; Ecotoxicology; Marketing;
• 出版者：Springer Berlin Heidelberg
• ISSN：1432-0517
• 卷排序：22

文摘

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.