Flow-injection spectrofluorimetric determination of ethylenethiourea

被引：0
|
作者：
Tomás Pérez-Ruiz
Carmen Martínez-Lozano
Virginia Tomás
Antonio Sanz
Jesús Martín
机构：
[1] Department of Analytical Chemistry,
[2] Faculty of Chemistry,undefined
[3] University of Murcia,undefined
[4] E-30071 Murcia,undefined
[5] Spain,undefined
来源：
Fresenius' Journal of Analytical Chemistry | 1998年 / 362卷
关键词：
Oxidation; Standard Deviation; Mercury; Sampling Rate; Relative Standard Deviation;
D O I：
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学科分类号：
摘要：
A flow-injection configuration is proposed for the fluorimetric determination of ethylenethiourea. The procedure is based on the inhibitory effect of ethylenethiourea on the oxidation of thiamine to thiochrome by mercury(II). A linear calibration graph was obtained between 0.1 and 2.0 μg mL–1, with a sampling rate of 40 samples per hour and a relative standard deviation of about 1.11%. The usefulness of the method was tested for the determination of ethylenethiourea residues in water, milk, potatoes, pear, grape and apple.
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页码：399 / 403
页数：4
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