Calidad del agua de la subcuenca baja del río David y su impacto sobre la salud pública.

Water quality in the lower river basin of David was assessed for the years 2013 and 2014. The water quality index (WQI) proposed by the National Sanitation Foundation (NSF) was used. The parameters analyzed were BOD5, fecal coliform, turbidity, dissolved oxygen, pH, nitrates, phosphates and total solids. Fecal coliforms are classified as poor quality for the four monitored sites. The sampling site less WQI was Rondon. Global WQIfor 2013 was 72.96 while 2014 was 76.73. Low quality sub-basin is classified as good due to the influence of the pH, DO parameters, nitrates and phosphates rated as excellent; however, the main factor of deterioration is fecal coliform contamination as they were detected in amounts exceeding the limits established by Executive Decree No.75 (≤ 250UFC/100 mL) therefore, these waters are not suitable for any kind recreational activity direct contact.D. Rovira et al/ Calidaddel agua...Water quality in the lower river basin of David was assessed for the years 2013 and 2014. The water quality index (WQI) proposed by the National Sanitation Foundation (NSF) was used. The parameters analyzed were BOD5, fecal coliform, turbidity, dissolved oxygen, pH, nitrates, phosphates and total solids. Fecal coliforms are classified as poor quality for the four monitored sites. The sampling site less WQI was Rondon. Global WQIfor 2013 was 72.96 while 2014 was 76.73. Low quality sub-basin is classified as good due to the influence of the pH, DO parameters, nitrates and phosphates rated as excellent; however, the main factor of deterioration is fecal coliform contamination as they were detected in amounts exceeding the limits established by Executive Decree No.75 (≤ 250UFC/100 mL) therefore, these waters are not suitable for any kind recreational activity direct contact.D. Rovira et al/ Calidaddel agua..

El agua, elemento clave para la seguridad alimentaria. Estudio de caso: calidad del agua de consumo de urbanizaciones de David y Dolega.

Plus (+) Economía:ISSN2411-0353 -ISSN-L2644-4046|Vol.6. Núm. 2, Junio –Noviembre 2018AbstractThe quality of water for human consumption was evaluated in seven house developments in the districts of David and Dolega, to contribute to food safety. The study type was descriptive and it was carried out between the years 2016-2018. Chemical, physical and microbiological parameters were evaluated, following standardized analysis techniques. The results show that in general, all the parameters studied were within the permissible values in the Technical Regulation DGNTI-COPANIT 23-395-99(as per Acronym in Spanish),except residual chlorine, this indicates that it is necessary to guarantee the application and monitoring of chlorine in the storage tank. The Panamanian standard establishes a maximum level of 1,5 mg/L and a minimum residual of 0,8 mg/L in the water. No presence of total coliforms was reported in six of the seven house developments evaluated.Plus (+) Economía:ISSN2411-0353 -ISSN-L2644-4046|Vol.6. Núm. 2, Junio –Noviembre 2018AbstractThe quality of water for human consumption was evaluated in seven house developments in the districts of David and Dolega, to contribute to food safety. The study type was descriptive and it was carried out between the years 2016-2018. Chemical, physical and microbiological parameters were evaluated, following standardized analysis techniques. The results show that in general, all the parameters studied were within the permissible values in the Technical Regulation DGNTI-COPANIT 23-395-99(as per Acronym in Spanish),except residual chlorine, this indicates that it is necessary to guarantee the application and monitoring of chlorine in the storage tank. The Panamanian standard establishes a maximum level of 1,5 mg/L and a minimum residual of 0,8 mg/L in the water. No presence of total coliforms was reported in six of the seven house developments evaluated

Aspectos prácticos de la validación e incertidumbre en medidas químicas.

Actualmente, en todo el mundo se realizan millones de determinaciones analíticas, donde se obtienen datos acerca de diferentes matrices y materiales: alimentos, textiles, materiales de construcción, etc. Los valores obtenidos son muy importantes para el comercio y también se relacionan con la vida y salud de la humanidad (calidad del agua, del aire y del suelo, procesos de contaminación, protección general del medio ambiente, investigaciones criminales en análisis forenses y otros muchos ejemplos). Básicamente, estamos hablando de determinaciones costosas, no sólo por ellas en sí, sino por las decisiones que se toman a partir de sus resultados. Así, es bien sabido que un pequeño error en el contenido de una sustancia en un dado producto puede traer cuantiosas pérdidas si el error es por defecto, o grandes reclamos si el mismo es por exceso. Y en lo relacionado a la protección de la salud y el medio ambiente, los errores pueden ser tan graves como para comprometer la vida de las personas. Es por eso que, en todo el mundo, hay una creciente inquietud acerca de la forma de realizar las determinaciones analíticas, lo que implica cada vez mayores esfuerzos a fin no sólo de llevarlas a cabo correctamente, sino de que se pueda demostrar que los resultados obtenidos son confiables