Deyao Qi

Shanghai University

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Haiying Liu

Michigan Technological University

Yongcheng Liu

Yan'an University

Tongyin Yu

Fudan University

Zhanen Zhang

Suzhou University of Science and Technology

Xinxin Wu

China Jiliang University

Kang Sun

Institute of Chemical Industry of Forest Products

Yunlong Zhuang

Jiaqi Deng

Shaanxi University of Technology

Yubo Fan

State Key Laboratory of Chemical Engineering

Pingsan Zhao

University of Georgia

Cooperative Institutions

Fudan University

Shanghai University

Chinese Academy of Sciences

Shanghai Jiao Tong University

Chinese Academy of Forestry

Institute of Chemical Industry of Forest Products

University of Science and Technology of China

Qilu University of Technology

Shandong Academy of Sciences

Shanghai Ocean University

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BASED ON PLANT TISSUE MEMBRANE BIOSENSOR

Chinese Journal of Applied Chemistry (1992)

Deyao Qi Yunlong Zhuang Xiaohong Zheng

Plant tissue

10.3724/j.issn.1000-0518.1992.5.90

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Citations (0)

Study of cation transfer across the water/nitrobenzene interface facilitated by a synthetic neutral dicarboxamide

Electroanalysis (1995)

Zhongmin Hu Weiqing Zhang Pingsan Zhao Deyao Qi

Abstract The transfer of proton, alkali, and alkaline earth metal ions across the water/nitrobenzene interface, facilitated by a synthetic neutral dicarboxamide ionophore in the nitrobenzene phase was investigated using cyclic voltammetry. The ionophore‐facilitated transfer of Li + , Ca 2+ , and Ba 2+ ions showed cathodic current peaks, and the transfer of H + ions apparently resulted in peaks of both anodic and cathodic currents within the potential window. The transfer process of these ions was found to be controlled by the diffusion of the ionophore in the nitrobenzene. The formation of a 1 : 1 complex for H + and of 1 : 2 (cation to ionophore) complexes for Li + , Ca 2+ , and Ba 2+ ions was inferred, through peak separation or the dependence of the cathodic peak potential on the logarithm of the ionophore concentration, to be involved in the transfer process. The equilibrium constants K LI,M for the exchange reaction of the ion M Z+ with the Li‐ + ionophore complex at the water/nitrobenzene interface were evaluated and correlated with the potentiometric selectivity coefficients K .

Nitrobenzene

10.1002/elan.1140070716

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Citations (3)

Characterization of Composite Membrane of Polyvinyl alcohol and Regenerated Silk Fibroin for Immobilization of Horseradish Peroxidase and an Amperometric NeckeloceneMediated Sensor Sensitive to Hydrogen Peroxide

Journal of Chemical Technology & Biotechnology (1996)

Haiying Liu Xiaolin Zhang Zhanen Zhang Deyao Qi Yubo Fan

Horseradish peroxidase (HRP) was effectively entrapped in a novel composite membrane of poly(vinyl alcohol) and regenerated silk fibroin. IR spectroscopy was employed to characterize the structure of the composite membrane and scanning electron microscopy was used to visualize the morphology of the composite membrane. HRP was utilized to amplify the amperometric response of the sensor by catalyzing reduction of hydrogen peroxide via nickelocene, an electron transfer mediator between immobilized HRP and a glassy carbon electrode. The influence of various experimental parameters such as pH, temperature and applied potential were explored for optimum analytical performance. The sensor possessed a variety of characteristics including good sensitivity, rapid response time and a low detection of limit of 0·1 μmol dm−3, which arose from the efficiency of electron transfer between immobilized HRP and the electrode via nickelocene.

Fibroin

Horseradish peroxidase

Amperometry

Polyvinyl Alcohol

Vinyl alcohol

10.1002/(sici)1097-4660(199609)67:1<77::aid-jctb526>3.3.co;2-w

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A phenazine methosulphate-mediated sensor sensitive to lactate based on entrapment of lactate oxidase and horseradish peroxidase in composite membrane of poly(vinyl alcohol) and regenerated silk fibroin

Electrochimica Acta (1997)

Haiying Liu Zhanen Zhang Xiaolin Zhang Deyao Qi Yongcheng Liu

Vinyl alcohol

Fibroin

Horseradish peroxidase

Entrapment

10.1016/s0013-4686(96)00190-9

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Citations (12)

THE RESPONSE CHARACTERISTICS OF LITHIUM ION-SELECTIVE MICROELECTRODE IN BIOLOGICAL BODY FLUIDS

Chinese Journal of Applied Chemistry (1989)

Yunlong Zhuang Deyao Qi

10.3724/j.issn.1000-0518.1989.2.6366

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Reagentless amperometric biosensor highly sensitive to hydrogen peroxide based on the incorporation of Meldola Blue, fumed-silica and horseradish peroxidase into carbon paste

Fresenius Journal of Analytical Chemistry (1997)

Haiying Liu Zhanen Zhang Yubo Fan Miao Dai Xiaolin Zhang

Amperometry

Horseradish peroxidase

Fumed silica

Carbon paste electrode

Methylene blue

10.1007/s002160050156

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Citations (17)

DOUBLE-BARRELED SODIUM ION-SELECTIVE MICROELECTRODE FOR BIOMEDICAL MEASUREMENTS

Chinese Journal of Applied Chemistry (1990)

Yunlong Zhuang Deyao Qi

A double-barreled sodium ion-selective microelectrode based on N, N'-bis(dibenzyl)-3,6-dioxaoctyl diamide, with tip diameter of 2.5μm, has been constructed. The microelectrode shows a linear relationship in the range of 10-3~5×10-1mol·dm-3(25℃)in NaCl solution.The selectivity coefficients with respect to K+, Mg2+, and Ca2+ are 0.053, 6.2×10-4, and 5.8×10-3, respectively. The response characteristics of the microelectrode for Na+ in body fluids was measured. The Na+ concentrations in some clinical microsamples were determined using this microelectrode.

10.3724/j.issn.1000-0518.1990.5.94

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A reagentless biosensor highly sensitive to hydrogen peroxide based on new methylene blue N dispersed in Nafion® gel as the electron shuttle

Journal of Electroanalytical Chemistry (1996)

Haiying Liu Tallin Ying Kang Sun Deyao Qi

Horseradish peroxidase

Nafion

Methylene blue

10.1016/s0022-0728(96)04756-0

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Citations (20)

THE RESPONSE CHARACTERISTICS OF LITHIUM ION-SELECTIVE MICROELECTRODE IN BIOLOGICAL BODY FLUIDS

Chinese Journal of Applied Chemistry (1989)

Yunlong Zhuang Deyao Qi

A new PVC lithium ion-selective microelectrode based on potassium tetraphenylborate(KTPB) or sodium tetraphenylborate (NaTPB) and plasticized by di-(n-octyl)-phenylphos-phonate (DOPP) has been constructed. The microelectrode based on KTPB has lower detection limit and better selectivity characteristics for bivalent ions, but the microelcetrodebased on NaTPB has lower membrane resistance. The response characteristics of microelectrode for different concentrations in Li+ has been examined experimenetally in synthetic in-tracellular solution,serum and physiological saline.

10.3724/j.issn.1000-0518.1989.2.63

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Citations (1)

Biosensing of Hydrogen Peroxide at Carbon Paste Electrode Incorporating N-Methyl Phenazine Methosulphate, Fumed-Silica and Horseradish Peroxidase

Analytical Letters (1997)

Wanlan Luo Haiying Liu Huihong Deng Kang Sun Changhou Zhao

ABSTRACT Biosensing of hydrogen peroxide was made at a carbon paste electrode incorporating fumed silica, horseradish peroxidase and N-methyl phenazine methosulphate. Cyclic voltammetric and amperometric measurements were used for the first time to demonstrate the suitability of electron communication between horseradish peroxidase and a carbon paste electrode via N-methyl phenazine methosulphate, an electron transfer mediator. Performance and characteristics of the biosensor were evaluated with respect to response time, detection limit, applied potential and concentration of the mediator. Effect of applied potential and amount of the mediator in carbon paste on the Michaelis-Menten constant of the biosensor was investigated. The biosensor possessed a variety of characteristics including long stability and rapid response and high sensitivity to hydrogen peroxide, with a detection limit of 0.08 μM.

Horseradish peroxidase

Phenazine

Fumed silica

Amperometry

Carbon paste electrode

10.1080/00032719708002797

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Citations (10)