Determination of Formaldehyde in Beer and Seafood Using Flow Injection Spectrophotometry

doi:10.7506/spkx1002-6300-200920083

Abstract

Abstract:

A simple and convenient flow injection spectrophotometric method was developed for determining the content of formaldehyde in beer and seafood. Formaldehyde can react with methyl acetylacetate to form a color compound in the presence of ammonia acetate after heating at 60 ℃for 3 min. A maximum absorption wavelength of this new compound was observed at 375 nm. The detection limit for formaldehyde using this method was 3.2 × 10-6 mol/L under the developed optimal conditions and an excellent linear relationship was exhibited in the range of (0.8－8.0) × 10-5 mol/L for formaldehyde determination using this method. Moreover, this method was applied to determine the content of formaldehyde in four kinds of seafood products and three kinds of beer products. The spike recovery rates of formaldehyde were 84.5%－107.4% and 94.6%－114.6%, respectively.

Key words: flow injection analysis, spectrophotometry, formaldehyde, methyl acetylacetate, ammonium acetate

CLC Number:

TS201.6

QIANG Hong，ZHU Hong-xia，ZHU Ruo-hua*，LI Shuo，NIE Run-qiu. Determination of Formaldehyde in Beer and Seafood Using Flow Injection Spectrophotometry[J]. FOOD SCIENCE, 2009, 30(20 ): 371-374.

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Determination of Formaldehyde in Beer and Seafood Using Flow Injection Spectrophotometry

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