Química Farmacéutica
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Browsing Química Farmacéutica by Subject "Absorción atómica"
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Item Comparación estadística de las técnicas analíticas de espectroscopia de Absorción Atómica Horno de Grafito (AAS-GF) y espectroscopia de emisión atómica de plasma acoplado inductivamente (ICP-OES) para la determinación de Arsénico en Vinagre(Universidad Santiago de Cali, 2025-11-20) Saldarriaga Agamez, Christiam; Castillo Alaya, Jorge Enrique (Director)Objective: To apply the analytical techniques of inductively coupled plasma atomic emission (ICP-OES) and graphite furnace atomic absorption (AA-GF) for the determination of arsenic in vinegar and through a statistical analysis of the coefficient of variation in the results obtained to determine the most optimal method for the quantification of arsenic in vinegar. Methods: During the configuration of the parameters for the atomic absorption equipment, the following was used as carrier gas: Argon, carrier flow: 2.0 L/min in all ramp states, except in atomization, hollow cathode lamp: Arsenic, power source: 300W, matrix modifier: Nickel, detection wavelength 103.7 nm and graphite cell. On the other hand, the configuration parameters for the inductively coupled atomic emission equipment were: plasma power source: 1500W, cooling gas flow: 10L/min, auxiliary gas flow: 0.2L/min, nebulizer gas flow: 0.7/min, torch alignment: Axial, sample flow: 1mL/min, sample introduction medium: Acidic aqueous solution with 2% nitric acid, emptying time: 20s, wavelength for Arsenic: Argon is used as carrier, cooling and auxiliary gas and detection wavelength: 189 nm. Results: Once the results were obtained, the t-test statistical model was applied to compare the results obtained in the tests, differences were found, since the two methods generate significantly different results (P<0.05), generating a coefficient of variation of 3.8% for AA and 0.5% for ICP.