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题名:
Primary-ion-conditioned polymeric membrane electrodes for sensitive detection of polyions
作者: Wang, Xuewei1,2; Ding, JiaWang(丁家旺)1; Song, Wenjing1,2; Xie, Kang1,3; Wei Qin(秦伟)1
刊名: SENSORS AND ACTUATORS B-CHEMICAL
ISSN号: 0925-4005
出版日期: 2012-01-03
卷号: 161, 期号:1, 页码:1119-1123
关键词: Potentiometry ; Ion-selective electrode ; Polyion ; Protamine ; Heparin ; Electrode conditioning
学科分类: Chemistry; Electrochemistry; Instruments & Instrumentation
产权排序: [Wang, Xuewei; Ding, Jiawang; Song, Wenjing; Xie, Kang; Qin, Wei] Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Wang, Xuewei; Song, Wenjing] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China; [Xie, Kang] Yantai Univ, Coll Chem & Biol, Yantai 264005, Peoples R China
通讯作者: Qin, W (reprint author), Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Chunhui Rd 17, Yantai 264003, Peoples R China. wqin@yic.ac.cn
作者部门: 环境化学实验室 
中文摘要: A novel operation mode for development of sensitive and renewable polymeric membrane polyion-sensitive electrodes has been explored in this paper. In contrast to the traditional polyion sensors which are conditioned with highly discriminated ions, the proposed polycation-sensitive membrane electrode with dinonylnaphthalene sulfonate as the ion-exchanger is conditioned with the primary ion (protamine), and activated with the discriminated ion (Na+) before measurement. Using this protocol, the membrane with protamine in the membrane bulk but with discriminated ions rich at the membrane outer surface can be prepared. The protamine inside the membrane efficiently suppresses the fluxes of protamine from the sample-membrane interface into the membrane bulk, thus decreasing the detection limit toward protamine by one order of magnitude. With the reproducible protamine fluxes obtained by the conditioning and activation steps, the protamine-sensitive electrode could be reused without significant signal deterioration. Titrimetric analysis of heparin with this novel technique has been demonstrated. The proposed polyion sensing platform offers much promise in the detection of polyions as well as in other polyion-involved bioanalyses.
英文摘要: A novel operation mode for development of sensitive and renewable polymeric membrane polyion-sensitive electrodes has been explored in this paper. In contrast to the traditional polyion sensors which are conditioned with highly discriminated ions, the proposed polycation-sensitive membrane electrode with dinonylnaphthalene sulfonate as the ion-exchanger is conditioned with the primary ion (protamine), and activated with the discriminated ion (Na+) before measurement. Using this protocol, the membrane with protamine in the membrane bulk but with discriminated ions rich at the membrane outer surface can be prepared. The protamine inside the membrane efficiently suppresses the fluxes of protamine from the sample-membrane interface into the membrane bulk, thus decreasing the detection limit toward protamine by one order of magnitude. With the reproducible protamine fluxes obtained by the conditioning and activation steps, the protamine-sensitive electrode could be reused without significant signal deterioration. Titrimetric analysis of heparin with this novel technique has been demonstrated. The proposed polyion sensing platform offers much promise in the detection of polyions as well as in other polyion-involved bioanalyses. (c) 2011 Elsevier B.V. All rights reserved.
研究领域[WOS]: Chemistry ; Electrochemistry ; Instruments & Instrumentation
关键词[WOS]: RESPONSE CHARACTERISTICS ; ELECTROCHEMICAL ASSAY ; REVERSIBLE DETECTION ; HEPARIN ; PROTAMINE ; SENSORS ; POTENTIOMETRY ; POLYANIONS ; BINDING
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000301549400153
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/5532
Appears in Collections:环境化学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Yantai Univ, Coll Chem & Biol, Yantai 264005, Peoples R China

Recommended Citation:
Wang, Xuewei,Ding, Jiawang,Song, Wenjing,et al. Primary-ion-conditioned polymeric membrane electrodes for sensitive detection of polyions[J]. SENSORS AND ACTUATORS B-CHEMICAL,2012,161(1):1119-1123.
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