A Simple Preparative Method to Evaluate Total UV Protection by Commercial Sunscreens

• Shouei Fujishige ^[1] ; Sumiko Takizawa ^[1] ; Kaoru Tsuzuki ^[1]
  1. [1] Tokyo Kasei University

     Tokyo Kasei University

     Japón

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 78, Nº 12, 2001, pág. 1678
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The optical transparency of a cellulose membrane in the UV region is equivalent to that of a high-quality quartz plate. A simple preparative method to obtain UV absorption spectra of sunscreens over two length regions, UVB and UVA, is presented with some experimental results obtained using a Visking tubular membrane. The thickness of the optical path can be controlled by simple squeezing at the surface of the membrane holding the creamy sample in the tubular space on a flat plate.