Seasonal monitoring of inland bathing waters using a sequential injection method as a fast and effective tool for nutrient quantification (N:P)

Raquel B. R. Mesquita*, Ana Machado, Inês C. Santos, Adriano A. Bordalo, António O. S. S. Rangel

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

7 Citações (Scopus)

Resumo

In this work, an expedite flow method for the combined determination of major nutrients, nitrogen base ions (nitrate, nitrite and ammonium) and phosphate, is described for seasonal monitoring of inland bathing waters. Individual determinations were adapted and comprised within the same manifold to attain a comprehensive assessment of the environmental status of natural waters. The multiparametric determination was performed to explore the features of a sequential injection analysis technique yielding a real-time assessment of various parameters and effective in-line sample handling. The sequential injection multiparametric method enabled the determination within the ranges: 15.0-150 μM nitrate; 0.15-5.00 μM nitrite; 1.00-60 μM ammonium; and 0.2-30 μM phosphate. The determination rates provided a full nutrient analysis within 7 minutes, an overwhelming improvement in relation to the individual determination of each parameter. The described method was successfully applied to seasonal monitoring of six inland bathing waters dealing in-line with sample variability.
Idioma originalEnglish
Páginas (de-até)1973-1980
Número de páginas8
RevistaAnalytical Methods
Volume8
Número de emissão9
DOIs
Estado da publicaçãoPublicado - 7 mar. 2016

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