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Authors
Abstract(s)
Neste trabalho consideram-se dois aspectos principais, sendo eles, a validação de métodos em
análise química e o estudo da qualidade da água nos distritos da Guarda, Viseu e Castelo
Branco.
A validação consiste na análise de determinados parâmetros para verificar se um método
consegue fornecer resultados fiáveis e com qualidade. O método em estudo designa-se por
método à pequena escala, utilizando espectrofotometria de absorção molecular na zona do
visível, em que é possível conhecer a concentração de nitratos, nitritos, amónio, ferro,
alumínio e manganês presentes em águas de consumo humano, calculando-se também a
incerteza associada à respectiva concentração.
Por outro lado, o estudo efectuado nos distritos referidos anteriormente, teve como objectivo
verificar a qualidade da água que chega até ao consumidor.
Os resultados referentes à validação de métodos cumpriram todos os requisitos definidos,
pelo que se pode concluir que os métodos se encontram validados, sendo possível a sua
implementação. No caso do estudo referente à qualidade da água, de um modo geral, a água
analisada é de boa qualidade tendo uma concentração reduzida dos parâmetros referidos.
In this work two main aspects are considered, namely, the validation methods in chemical analysis and the study of water quality in the districts of Guarda, Viseu and Castelo Branco. The validation consists in the analysis of certain parameters to verify that a method can provide reliable and quality results. The study method is called a method on a small scale, using molecular absorption spectrophotometry in the visible range, it is possible to know the concentration of nitrates, nitrites, ammonium, iron, aluminum and manganese present in drinking water, calculating also the uncertainty associated with the respective concentration. On the other hand, the study carried out in the districts mentioned above, aimed to check the quality of water that reaches the consumer. The results of the validation methods met all the requirements set, so it can be concluded that the methods are validated and its practical implementation is possible. In the case of the study relating to water quality, in general, the water analyzed is of good quality having a reduced concentration of said parameters.
In this work two main aspects are considered, namely, the validation methods in chemical analysis and the study of water quality in the districts of Guarda, Viseu and Castelo Branco. The validation consists in the analysis of certain parameters to verify that a method can provide reliable and quality results. The study method is called a method on a small scale, using molecular absorption spectrophotometry in the visible range, it is possible to know the concentration of nitrates, nitrites, ammonium, iron, aluminum and manganese present in drinking water, calculating also the uncertainty associated with the respective concentration. On the other hand, the study carried out in the districts mentioned above, aimed to check the quality of water that reaches the consumer. The results of the validation methods met all the requirements set, so it can be concluded that the methods are validated and its practical implementation is possible. In the case of the study relating to water quality, in general, the water analyzed is of good quality having a reduced concentration of said parameters.
Description
Keywords
Incerteza Método à Pequena Escala Qualidade da Água Validação