Using FTIR-ATR Spectroscopy To Teach the Internal Standard Method

• Michael K. Bellamy ^[1]
  1. [1] Northwest Missouri State University

     Northwest Missouri State University

     Township of Polk, Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 87, Nº 12 (December), 2010, págs. 1399-1401
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The internal standard method is widely applied in quantitative analyses. However, most analytical chemistry textbooks either omit this topic or only provide examples of a single-point internal standardization. An experiment designed to teach students how to prepare an internal standard calibration curve is described. The experiment is a modified version of an experiment that uses the internal standard method to quantify the percentage of vinyl acetate in poly(ethylene-co-vinyl acetate). Students gain a good understanding of how to apply the internal standard method as the concentration of internal standard changes throughout the experiment. The experiment also provides students with hands-on experience with the use of Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy.