Amperometric determination of hydrogen peroxide residue in beverages using a Nafion modified palladium electrode

Tunghai University Institutional Repository > 農學院 > 食品科學系所 > 期刊論文 > Item 310901/23026

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://140.128.103.80:8080/handle/310901/23026

题名:	Amperometric determination of hydrogen peroxide residue in beverages using a Nafion modified palladium electrode
作者:	Hsu, C.-L., Jang, H.-D., Su, M.-S., Chang, K.-S., Huang, Y.-S.
贡献者:	European Food Research and Technology 226 (4) , pp. 809-815
关键词:	Amperometric detection;Ascorbic acid;Aseptic packages;Hydrogen peroxide;Nafion
日期:	2008
上传时间:	2013-05-24T09:17:55Z (UTC)
出版者:	Department of Food Science, Tunghai University
摘要:	Hydrogen peroxide (H 2O 2) residues are not permitted in food due to health concerns. An amperometric sensor based on a Nafion modified palladium (Pd) electrode was developed for the rapid determination of the H 2O 2 residue in aseptically packaged beverages. A prepared Pd electrode shows a slowly increasing reaction upon repeating the procedure of adding the same concentration of H 2O 2 into the reaction cell unless pretreating the electrode with cyclic voltammetry to obtain reproducible surfaces, whereas a Nafion modified Pd electrode can reach stable reaction to H 2O 2 without any pretreatment. The interference level of ascorbic acid (the ration of electrochemical response to ascorbic acid to the electrochemical response of H 2O 2) was calculated as 0.0004 for the Nafion modified Pd electrode. Interference (99.5%)from ascorbic acid was diminished by Nafion membrane. The response of the sensor to H 2O 2 in distilled water is linear over the range of 0.25-15 μM (r 2 = 0.9956). The sensor developed in this study can efficiently determine H 2O 2 residues in commercial beverages with good linear correlation between spiked H 2O 2 concentration and detected H 2O 2 concentration, for winter melon-flavored drink, r 2 = 0.9904 in the range of 0.25-15 μM and for lemon-flavored tea, r 2 = 0.9927 in the range of 0.25-25 μM. ? 2007 Springer-Verlag.
显示于类别:	[食品科學系所] 期刊論文

文件中的档案:

档案	大小	格式	浏览次数
index.html	0Kb	HTML	509	检视/开启

在THUIR中所有的数据项都受到原著作权保护.

数据加载中.....