novel potentiometric membrane sensor for the determination of trace amounts of chromium ions

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	novel potentiometric membrane sensor for the determination of trace amounts of chromium ions
	Ganjali MR ; Mizani F ; Salavati-Niasari M ; Javanbakht M
发表期刊	ANALYTICAL SCIENCES
ISSN	0910-6340
	2003
卷号	19 期号:2 页码:235-238
关键词	Selective Electrodes Additives Responses
通讯作者	Ganjali, MR
英文摘要	A plasticized Cr3+ ion sensor by incorporating 2,3,8,9-tetraphenyl-1,4,7,10-tetraazacyclododeca-1,3,7,9-tetraene (TTCT) ionophore exhibits a good potentiometric response for Cr3+ over a wide concentration range (1.0 x 10(-6) - 1.0 x 10(-1) M) with a slope of 19.5 mV per decade. The sensor response is stable for at least three months. Good selectivity for Cr3+ in comparison with alkali, alkaline earth, transition and heavy metal ions, and minimal interference are caused by Li+, Na+, K+, Co2+, Hg2+, Ca2+, Pb2+ and Zn2+ ions, which are known to interfere with other chromium membrane sensors. The TTCT-based electrode shows a fast response time (15 s), and can be used in aqueous solutions of pH 3 - 5.5. The proposed sensor was used for the potentiometric titration of Cr3+ with EDTA and for a direct potentiometric determination of Cr3+ content in environmental samples.
语种	英语
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/4589
专题	科研共享资源
推荐引用方式 GB/T 7714	Ganjali MR,Mizani F,Salavati-Niasari M,et al. novel potentiometric membrane sensor for the determination of trace amounts of chromium ions[J]. ANALYTICAL SCIENCES,2003,19(2):235-238.
APA	Ganjali MR,Mizani F,Salavati-Niasari M,&Javanbakht M.(2003).novel potentiometric membrane sensor for the determination of trace amounts of chromium ions.ANALYTICAL SCIENCES,19(2),235-238.
MLA	Ganjali MR,et al."novel potentiometric membrane sensor for the determination of trace amounts of chromium ions".ANALYTICAL SCIENCES 19.2(2003):235-238.

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