A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method

Myung Jong Ju; Kenshi Hayashi; Kiyoshi Toko; Do Hyeon Yang; Seung Woo Lee; Toyoki Kunitake

A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method

Myung Jong Ju, Kenshi Hayashi, Kiyoshi Toko, Do Hyeon Yang, Seung Woo Lee, Toyoki Kunitake

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A new electrochemical sensor with high sensitivity and selectivity for heavy-metal ions was proposed. The sensor was based on the electrochemical impedance spectroscopy (EIS) attributing to a constant phase element (CPE) behavior under dynamically controlled electrode potential. With the measurements of the CPE behavior by the surface-polarization controlling method, various heavy-metal ions could be easily detected and discriminated. No interference of counter anions such as Cl^-, NO₃^- and CH ₃COO^- was observed, and the same metal ions gave similar sensor response patterns regardless of the counter anions. Especially, the present method offers a high sensitivity of ppb levels for the most highly toxic elements, i.e., Hg²⁺ and Hg⁺.

Original language	English
Title of host publication	TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers
Pages	1876-1879
Number of pages	4
Publication status	Published - Nov 9 2005
Event	13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05 - Seoul, Korea, Republic of Duration: Jun 5 2005 → Jun 9 2005

Publication series

Name	Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05
Volume	2

Other

Other	13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05
Country/Territory	Korea, Republic of
City	Seoul
Period	6/5/05 → 6/9/05

All Science Journal Classification (ASJC) codes

Engineering(all)

Cite this

Ju, M. J., Hayashi, K., Toko, K., Yang, D. H., Lee, S. W., & Kunitake, T. (2005). A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method. In TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers (pp. 1876-1879). [3E4.145] (Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05; Vol. 2).

A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method. / Ju, Myung Jong; Hayashi, Kenshi ; Toko, Kiyoshi et al.

TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers. 2005. p. 1876-1879 3E4.145 (Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ju, MJ, Hayashi, K , Toko, K, Yang, DH, Lee, SW & Kunitake, T 2005, A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method. in TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers., 3E4.145, Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05, vol. 2, pp. 1876-1879, 13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05, Seoul, Korea, Republic of, 6/5/05.

Ju MJ, Hayashi K , Toko K, Yang DH, Lee SW, Kunitake T. A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method. In TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers. 2005. p. 1876-1879. 3E4.145. (Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05).

Ju, Myung Jong ; Hayashi, Kenshi ; Toko, Kiyoshi et al. / A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method. TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers. 2005. pp. 1876-1879 (Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05).

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title = "A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method",

abstract = "A new electrochemical sensor with high sensitivity and selectivity for heavy-metal ions was proposed. The sensor was based on the electrochemical impedance spectroscopy (EIS) attributing to a constant phase element (CPE) behavior under dynamically controlled electrode potential. With the measurements of the CPE behavior by the surface-polarization controlling method, various heavy-metal ions could be easily detected and discriminated. No interference of counter anions such as Cl-, NO3- and CH 3COO- was observed, and the same metal ions gave similar sensor response patterns regardless of the counter anions. Especially, the present method offers a high sensitivity of ppb levels for the most highly toxic elements, i.e., Hg2+ and Hg+.",

author = "Ju, {Myung Jong} and Kenshi Hayashi and Kiyoshi Toko and Yang, {Do Hyeon} and Lee, {Seung Woo} and Toyoki Kunitake",

year = "2005",

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series = "Digest of Technical Papers - International Conference on Solid State Sensors and Actuators and Microsystems, TRANSDUCERS '05",

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AU - Ju, Myung Jong

AU - Hayashi, Kenshi

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AU - Lee, Seung Woo

AU - Kunitake, Toyoki

PY - 2005/11/9

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N2 - A new electrochemical sensor with high sensitivity and selectivity for heavy-metal ions was proposed. The sensor was based on the electrochemical impedance spectroscopy (EIS) attributing to a constant phase element (CPE) behavior under dynamically controlled electrode potential. With the measurements of the CPE behavior by the surface-polarization controlling method, various heavy-metal ions could be easily detected and discriminated. No interference of counter anions such as Cl-, NO3- and CH 3COO- was observed, and the same metal ions gave similar sensor response patterns regardless of the counter anions. Especially, the present method offers a high sensitivity of ppb levels for the most highly toxic elements, i.e., Hg2+ and Hg+.

AB - A new electrochemical sensor with high sensitivity and selectivity for heavy-metal ions was proposed. The sensor was based on the electrochemical impedance spectroscopy (EIS) attributing to a constant phase element (CPE) behavior under dynamically controlled electrode potential. With the measurements of the CPE behavior by the surface-polarization controlling method, various heavy-metal ions could be easily detected and discriminated. No interference of counter anions such as Cl-, NO3- and CH 3COO- was observed, and the same metal ions gave similar sensor response patterns regardless of the counter anions. Especially, the present method offers a high sensitivity of ppb levels for the most highly toxic elements, i.e., Hg2+ and Hg+.

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A new electrochemical sensor for heavy-metal ions by the surface-polarization controlling method

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