FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (6): 199-202.doi: 10.7506/spkx1002-6630-200906045

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Catalytic Kinetic Spectrophotometric Determination of Trace Formaldehyde in Beverage

FANG Xia,HUANG Yu-gai,LI Ling-ling,CAO Lian-yun   

  1. (Department of Chemistry, Jiangsu Institute of Education, Nanjing 210013, China)
  • Received:2008-03-24 Revised:2008-06-16 Online:2009-03-15 Published:2010-12-29
  • Contact: FANG Xia, E-mail:fxqpliu@163.com

Abstract:

A kinetic spectrophotometric method for determination of trace formaldehyde in beverage was proposed based on the catalytic effect of formadehyde on the discoloration reaction of azure I oxidized by potassium bromate in hydrochloric acid. The linear range is 0. 20 to 6.00 μg/ml. The method has been used to determine the formaldehyde in saled carbonated beverage and in pond water from river samples with satisfying results.

Key words: catalytical reaction, kinetic spectrophotometery, formaldehyde, azure Ⅰ

CLC Number: