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Analytical Letters Volume 25, 1992 - Issue 12
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Spectrometry

Simultaneous 2nd Order Derivative Spectrophotometry Determination of Sorbic and Benzoic Acids in Soft Drinks

J. C. Garcia Castro Department of Analytical Chemistry, Food Science and Toxicology University of La Laguna, 38070-La, Laguna, Spain
,
M. A. Rodriguez Delgado Department of Analytical Chemistry, Food Science and Toxicology University of La Laguna, 38070-La, Laguna, Spain
,
M. J. Sanchez Department of Analytical Chemistry, Food Science and Toxicology University of La Laguna, 38070-La, Laguna, Spain
&
F. Garcia Montelongo Department of Analytical Chemistry, Food Science and Toxicology University of La Laguna, 38070-La, Laguna, Spain
Pages 2367-2376 | Received 09 Jun 1992, Accepted 18 Aug 1992, Published online: 23 Sep 2006
 
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Abstract

A method is developed for the simultaneous 2nd order spectrophotometric determination of 1 to 7 μg.mL−1 of each of benzoic and sorbic acids in non vegetal soft drinks, using a blank prepared from the same soft drink to be analyzed in order to avoid the interferece from other additives and colouring matter present.

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