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题名: An SPE-assisted BODIPY fluorometric paper sensor for the highly selective and sensitive determination of Cd2+ in complex sample: rice
作者: Zhang, Yu1;  Li, Hui1;  Niu, Li-Ya2;  Yang, Qing-Zheng2;  Guan, Ya-Feng1;  Feng, Liang1
刊名: ANALYST
发表日期: 2014
DOI: 10.1039/c4an00198b
卷: 139, 期:12, 页:3146-3153
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: By using sensing technology, the individual component analysis at trace level in complex samples remains problematic simply because of various interfering species. For example, the determination of Cd2+ in rice is difficult due to the co-existing interfering metal cations at thousands or even millions of times higher concentrations. In this study, a heavy-metal ion sensitive BODIPY (4,4-difluoro-4-bora-3a, 4a-diaza-s-indacene)-based fluorometric paper sensor with assistance of solid phase extraction (SPE) was developed for the highly selective and sensitive determination of trace Cd2+ in rice. SPE column packed with prepared sulfonated PS-DVB microspheres was employed to enrich trace Cd2+ and meanwhile remove most interfering heavy-metal ions in simulated complex rice sample with oxalic acid as eluent, which was theoretically selected on the basis of f values. Mn2+, as a major coexistent heavy-metal ion, could not be easily removed by SPE, but showed little fluorescent response for BODIPY fluorometric paper sensor even in excess amounts. Combining the separation and enrichment capability of SPE column with the selectivity of BODIPY-based fluorometric paper sensor, we were able to detect trace Cd2+ in complex samples. The response of fluorometric paper sensor was linearly related with Cd2+ concentrations in the range of 0.5-4 mu M, with a detection limit of 0.5 mu M. Twelve real rice samples spiked with Cd2+ were analysed using this method and the results are in good agreement with ICP-MS measurements.
关键词[WOS]: HEAVY-METAL IONS ;  FLUORESCENT SENSOR ;  LIVING CELLS ;  CHROMATOGRAPHIC-SEPARATION ;  ADSORPTION CAPACITY ;  AQUEOUS-SOLUTION ;  TURN-ON ;  CADMIUM ;  PROBE ;  PRECONCENTRATION
语种: 英语
WOS记录号: WOS:000336737900028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145825
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Separat Sci Analyt Chem, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

Recommended Citation:
Zhang, Yu,Li, Hui,Niu, Li-Ya,et al. An SPE-assisted BODIPY fluorometric paper sensor for the highly selective and sensitive determination of Cd2+ in complex sample: rice[J]. ANALYST,2014,139(12):3146-3153.
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