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

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Shouei Fujishige , Sumiko Takizawa and Kaoru Tsuzuki

Laboratory for Polymers and Textiles, Tokyo Kasei University, Tokyo 173-8602, Japan

J. Chem. Educ., 2001, 78 (12), p 1678

DOI: 10.1021/ed078p1678

Publication Date (Web): December 1, 2001

Abstract

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.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Laboratory Instruction

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Consumer Chemistry

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This article has been cited by 3 ACS Journal articles (3 most recent appear below).

Investigating UV-Blocking Properties of Sunscreens on the Microscale
Jeremiah K. N. Mbindyo and Amber K. Brown
Journal of Chemical Education2010 87 (12), 1388-1388
- Investigating UV-Blocking Properties of Sunscreens on the Microscale
  Jeremiah K. N. Mbindyo and Amber K. Brown
  Journal of Chemical Education2010 87 (12), 1388-1388
  A laboratory experiment exploring the effectiveness of various types of sunscreens in blocking UV light, which previously appeared in this Journal, has been adapted to the microscale. The experiment is used in an undergraduate environmental chemistry ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Experimental Determination of Ultraviolet Radiation Protection of Common Materials
João Paiva , Susana C. A. Tavares and Joaquim C. G. Esteves da Silva
Journal of Chemical Education2007 84 (12), 1963
- Experimental Determination of Ultraviolet Radiation Protection of Common Materials
  João Paiva , Susana C. A. Tavares and Joaquim C. G. Esteves da Silva
  Journal of Chemical Education2007 84 (12), 1963
  Aiming at a better understanding of the problems associated with the depletion of the ozone layer, we propose several experiments to be performed by students of different levels: secondary and first-year undergraduate students. The oxidation of iodide ...
  Abstract | Hi-Res PDF | PDF w/ Links
Two-Step Semi-Microscale Preparation of a Cinnamate Ester Sunscreen Analog
Ryan G. Stabile and Andrew P. Dicks
Journal of Chemical Education2004 81 (10), 1488
- Two-Step Semi-Microscale Preparation of a Cinnamate Ester Sunscreen Analog
  Ryan G. Stabile and Andrew P. Dicks
  Journal of Chemical Education2004 81 (10), 1488
  The two-step synthesis and characterization of a sunscreen analog (ethyl trans-4-methoxycinnamate) is presented. This experiment is tailored towards students with a sound theoretical understanding of organic chemistry and related laboratory techniques. ...
  Abstract | Hi-Res PDF | PDF w/ Links