Determination of acetaldehyde in liquid, solid and semi-solid food after pervaporation-derivatization

被引：23
作者：
Papaefstathiou, I
Bilitewski, U
deCastro, MDL
机构：
[1] UNIV CORDOBA,FAC SCI,DEPT ANALYT CHEM,E-14004 CORDOBA,SPAIN
[2] GESELL BIOTECHNOL FORSCH MBH,DEPT ENZYMOL,PROJECT GRP BIOSENSORS,D-3300 BRAUNSCHWEIG,GERMANY
来源：
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1997年 / 357卷 / 08期
关键词：
D O I：
10.1007/s002160050325
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A spectrophotometric method for the determination of acetaldehyde in liquid, semi-solid and solid food samples, employing the coupling of a continuous flow configuration to a pervaporation unit, has been proposed. It is based on the reaction of the analyte with fuchsin in acidic medium and subsequent formation of a coloured product (alkylsulphonic acid chromophore) with sodium sulphite, which was monitored spectrophotometrically. Variable sensitivity was obtained by altering the pervaporation temperature and the thickness of the membrane. The detection limits went down to 4.2 mu g/mL and the precision was between 1.2 and 3.6%.
引用
收藏
页码：1168 / 1173
页数：6
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