Carrera Ingeniería Bioquímica

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    Implementación del Parámetro de Dióxido de azufre (SO2) bajo el Método US. EPA.: Parte 60; Apéndice A - Método 6C, en el Sistema de Calidad del Laboratorio AMBI FOR HEALTH SERVICES CÍA. LTDA.
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos. Carrera de Ingeniería Bioquímica, 2016-03) Acosta Villacís, Álvaro Gabriel; Valencia Silva, Alex Fabián
    Validation is the process established to obtain and documented evidence demonstrating a method of analysis, enough to generate reliable and reproducible results expected within defined ranges work well; It provides a high degree of confidence and assurance of the analytical method and is performed compulsorily when developing a new procedure, ensuring that the proposed method meets the desired results. It should be noted that the methods described in standards or official texts are considered validated, although they refer only to general methods. To perform the validation of the method for determining SO2, the methodology described in US.EPA applied. 6C method, supplemented by an instrumental analyzer which employs detection principle Pulsed Fluorescence method and reliability was checked by evaluation of parameters such as; precision, accuracy, linearity and specificity. Also included, the determination of measurement uncertainty and the working range for this method. The results of the working ranges were: low range (LR); working limits from 1 ppm to 150 ppm of SO2, with 6.27% uncertainty, coefficients repeatability CVr = 0.68 and reproducibility CVR = 2.59 less than 5%. The medium range (MR) with limits from 150 ppm to 300 ppm of SO2 with uncertainty of 2.90% and coefficients of variation for repeatability CVr = 0.34 and reproducibility CVR= 0.56 less than 1%. While senior (HR) whose job level is from 304.6 ppm to 1029 ppm of SO2 introduced an uncertainty of 2.59% and coefficients of variation for repeatability and lower reproducibility 1% respectively, CVr = 0.075% and CVR = 0.37% .