Concentration dependence of ionic conductance measured with ion-selective sub-micro pipette probes in aqueous sodium and potassium chloride solutions

被引:11
作者
Son, J. W. [1 ]
Takami, T. [1 ]
Lee, J-K. [1 ]
Kawai, T. [1 ]
Park, B. H. [1 ]
机构
[1] Konkuk Univ, Div Quantum Phases & Devices, Dept Phys, Seoul 143701, South Korea
关键词
SCANNING ELECTROCHEMICAL MICROSCOPY; ELECTRODES; CELLS;
D O I
10.1063/1.3615281
中图分类号
O59 [应用物理学];
学科分类号
摘要
Selective ionic currents in aqueous sodium and potassium chloride solutions with concentrations from 0.01 M to 1.0 M were measured using sub-micro pipette probes in which a poly(vinyl chloride) film containing crown ethers selectively filtered sodium or potassium ions. The selective ionic currents were monitored with a sub-picoampere current measurement system developed from the techniques of T Omega-gap impedance scanning tunneling microscopy. The ionic currents increased with the concentration of the corresponding solution, and thus these sub-micro pipette probes can be applied to detect local ionic concentration of a specific ion in living cells with ionic concentration higher than 0.1 M. (C) 2011 American Institute of Physics. [doi:10.1063/1.3615281]
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页数:3
相关论文
共 23 条
  • [1] Alberts B., 2008, MOL BIOL CELL, P652
  • [2] Scanning electrochemical microscopy. 40. Voltammetric ion-selective micropipet electrodes for probing ion transfer at bilayer lipid membranes
    Amemiya, S
    Bard, AJ
    [J]. ANALYTICAL CHEMISTRY, 2000, 72 (20) : 4940 - 4948
  • [3] Biological applications of scanning electrochemical microscopy: chemical imaging of single living cells and beyond
    Amemiya, Shigeru
    Guo, Jidong
    Xiong, Hui
    Gross, Darrick A.
    [J]. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2006, 386 (03) : 458 - 471
  • [4] AMMANN D, 1983, ION SEL ELECTRODE R, V5, P3
  • [5] AMMANN D, 1986, DESIGN APPL
  • [6] [Anonymous], ION SELECTIVE INTRAC
  • [7] DEBYE P, 1924, Z PHYS, V25, P49
  • [8] The use of scanning ion conductance microscopy to image A6 cells
    Gorelik, J
    Zhang, YJ
    Shevchuk, AI
    Frolenkov, GI
    Sánchez, D
    Lab, MJ
    Vodyanoy, I
    Edwards, CRW
    Klenerman, D
    Korchev, YE
    [J]. MOLECULAR AND CELLULAR ENDOCRINOLOGY, 2004, 217 (1-2) : 101 - 108
  • [9] Solid contact micropipette ion selective electrode for potentiometric SECM
    Gyetvai, Gergely
    Sundblom, Soren
    Nagy, Livia
    Ivaska, Ari
    Nagy, Geza
    [J]. ELECTROANALYSIS, 2007, 19 (10) : 1116 - 1122
  • [10] THE SCANNING ION-CONDUCTANCE MICROSCOPE
    HANSMA, PK
    DRAKE, B
    MARTI, O
    GOULD, SAC
    PRATER, CB
    [J]. SCIENCE, 1989, 243 (4891) : 641 - 643