期刊
ANALYTICA CHIMICA ACTA
卷 511, 期 1, 页码 155-158出版社
ELSEVIER
DOI: 10.1016/j.aca.2004.01.025
关键词
HPLC; DAD; formaldehyde; spirits; derivatization
A high-performance liquid chromatography (HPLC) method with diode-array detection (DAD) to identify and quantify formaldehyde (FA) in spirits is described. Formaldehyde was quantified with DAD after derivatization with ethyl 3-oxobutanoate and ammonia to yield the diethyl 2,6-dimethyl- 1.4-dihydropyridine-3,5-dicarboxylate. The response of the detection system was linear within the range of 0.25-2.00 mug/ml with a correlation coefficient of 0.9998. The average formaldehyde concentration in the samples ranged between 0.27 and 3.01 mg/l. The coefficient of variation was lower than 4.84% and recoveries ranged from 93.4 to 100.4%. Purity of formaldehyde derivative peak was confirmed by spectral data. (C) 2004 Elsevier B.V. All rights reserved.
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