Flow-through room temperature phosphorescence optosensing for the determination of lead in sea water

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	Flow-through room temperature phosphorescence optosensing for the determination of lead in sea water
	Blanca San Vicente de la Riva ; Jose Manuel Costa-FernaÂndez ; Rosario Pereiro ; Alfredo Sanz-Medel
发表期刊	Analytica Chimica Acta
ISSN	0003-2670
	1999
页码	1--9
关键词	Flow-through Optosensing Room Temperature Phosphorescence Lead Sea Water
英文摘要	The chelates formed between the heavy metal ion Pb(II) and the reagents 8-hydroxy-5-quinolinesulphonic acid, 8-hydroxy-7-quinolinesulphonic acid and 8-hydroxy-7-iodo-5-quinolinesulphonic acid exhibit strong room temperature phosphorescence (RTP) if retained on the surface of anion exchange resin beads. Based on the on-line formation, in a flow-injection system, of such RTP lead chelates and their transient immobilization on an anion exchange resin, three flow-through optosensing systems are investigated for lead in sea water. Optimum experimental conditions and the analytical performance characteristics of the three optosensors are discussed. Relative standard deviations (RSDs) of the order of 3% are typical at 100 ng ml−1 Pb(II) and the active sensing phases can easily be regenerated by passing 500 μl of 6 M hydrochloric acid. A lead(II) detection limit of 0.1 ng ml−1 (3×background SD, for 2 ml sample injection volumes) was achieved for the optosensor based on 8-hydroxy-7-quinolinesulphonic acid. Possible interferences present in sea water, including cations and anions which could affect the sensor response, are discussed in detail. Finally, the selected RTP flow-through optical sensor has been successfully tested for the determination of lead in sea water at a few ng ml−1.
语种	英语
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/2993
专题	科研共享资源
推荐引用方式 GB/T 7714	Blanca San Vicente de la Riva,Jose Manuel Costa-FernaÂndez,Rosario Pereiro,et al. Flow-through room temperature phosphorescence optosensing for the determination of lead in sea water[J]. Analytica Chimica Acta,1999:1--9.
APA	Blanca San Vicente de la Riva,Jose Manuel Costa-FernaÂndez,Rosario Pereiro,&Alfredo Sanz-Medel.(1999).Flow-through room temperature phosphorescence optosensing for the determination of lead in sea water.Analytica Chimica Acta,1--9.
MLA	Blanca San Vicente de la Riva,et al."Flow-through room temperature phosphorescence optosensing for the determination of lead in sea water".Analytica Chimica Acta (1999):1--9.

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