Examinando por Autor "Jojoa Nieto, Oscar Stivel"
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- ÍtemConcentración de fluoruros en aguas volcánicas para consumo humano(Fundación Universitaria Los Libertadores. Sede Bogotá., ) Jojoa Nieto, Oscar Stivel; Salas Zambrano, Andrés; Oscar Stiven Jojoa NietoEcological exploratory longitudinal study. 673 water samples were analyzed during 30 calendar days, by ion selective potentiometry for fluorides with 692 / pH ion Metrohm ® equipment. 8 clusters were selected with two measurement points in each of them, water supply and kitchen tap. A control cluster was established, for not supplied with water from the volcano. Medians were reported due to the non-normal distribution of the data, and non-parametric statistics to determine differences between groups (Mann-Whitney and Kruskal-Wallis) with statistical significance p = <0.05.