期刊
JOURNAL OF SEPARATION SCIENCE
卷 39, 期 9, 页码 1749-1756出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201600167
关键词
Chili; Magnetic solid-phase extraction; Reduced graphene oxide; Sudan dyes; Tomato sauce
资金
- National Natural Science Foundation of China [21305028, 21106101, 21475095]
- Natural Science Foundation of Hebei Province [B2013209238]
- Research Foundation of Education Bureau of Hebei Province [Q2012155]
A simple, effective, and robust magnetic solid-phase extraction method was developed using magnetite/reduced graphene oxide nanoparticles as the adsorbent for the simultaneous determination of Sudan dyes (I, II, III, and IV) in foodstuffs. The magnetite/reduced graphene oxide nanoparticles were characterized by X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometry. The extraction parameters including extraction time, elution solution, and elution time and volume were investigated in detail. Such magnetite/reduced graphene oxide nanoparticles based magnetic solid-phase extraction in combination with high-performance liquid chromatography and variable wavelength detection gave the detection limits of 3-6 mu g/kg for Sudan I-IV in chili sauce, tomato sauce, chili powder, and chili flake samples. The recoveries were 79.6-108% at three spiked levels with the intra-and inter-day relative standard deviations of 1.2-8.6 and 4.5-9.6%, respectively. The feasibility was further performed by a comparison with commercial alumina-N. This method is suitable for the routine analysis of Sudan dyes due to its sensitivity, simplicity, and low cost.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据