Simplified version of the sodium salicylate method for analysis of nitrate in drinking waters |
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| Authors: | MIC Monteiro FN Ferreira NMM de Oliveira AK Ávila |
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| Institution: | Centro de Tecnologia Mineral, CETEM, Coordenação de Qu?́mica Anal?́tica, Avenida Ipê, No. 900, Ilha da Cidade Universitária, CEP 21941-590, Rio de Janeiro, RJ, Brazil |
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| Abstract: | The salicylate method for determination of nitrate in drinking waters has been simplified by using the calibration solutions for 54 days, and therefore, reducing the work time. The results obtained can be considered satisfactory with regard to limit of determination (0.10 mg l−1 nitrate as nitrogen (NO3−-N)), precision (relative standard deviations <4% for five determinations were found) and accuracy (recoveries from 88 to 106% for nitrate in spiked drinking water were obtained). |
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| Keywords: | Nitrate determination Spectrophotometric method Salicylate method Water |
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