Development and comparison of pH microoptodes for use in marine systems

Research output: Contribution to journal › Conference article › Research › peer-review

Standard

Development and comparison of pH microoptodes for use in marine systems. / Kohls, Oliver; Klimant, Ingo; Holst, Gerhard; Kühl, Michael.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 2978, 1997, p. 82-91.

Research output: Contribution to journal › Conference article › Research › peer-review

Harvard

Kohls, O, Klimant, I, Holst, G & Kühl, M 1997, 'Development and comparison of pH microoptodes for use in marine systems', Proceedings of SPIE - The International Society for Optical Engineering, vol. 2978, pp. 82-91. https://doi.org/10.1117/12.269958

APA

Kohls, O., Klimant, I., Holst, G., & Kühl, M. (1997). Development and comparison of pH microoptodes for use in marine systems. Proceedings of SPIE - The International Society for Optical Engineering, 2978, 82-91. https://doi.org/10.1117/12.269958

Vancouver

Kohls O, Klimant I, Holst G, Kühl M. Development and comparison of pH microoptodes for use in marine systems. Proceedings of SPIE - The International Society for Optical Engineering. 1997;2978:82-91. https://doi.org/10.1117/12.269958

Author

Kohls, Oliver ; Klimant, Ingo ; Holst, Gerhard ; Kühl, Michael. / Development and comparison of pH microoptodes for use in marine systems. In: Proceedings of SPIE - The International Society for Optical Engineering. 1997 ; Vol. 2978. pp. 82-91.

Bibtex

@inproceedings{5a5bcb2b864d4f10a686ce4fe9434c15,
title = "Development and comparison of pH microoptodes for use in marine systems",
abstract = "Traditionally microscale measurements of pH are based on potentiometric measurements with a pH glass microelectrode. The preparation of these electrodes is, however, very time consuming. We developed pH micro-optodes for use in seawater in the range of pH 7 - 9. The optodes are based on immobilized acid-base indicators, which change their color and/or fluorescence properties as a function of the pH. Various dyes were immobilized directly on the tip of a tapered optical fiber by different techniques. We then investigated these pH optodes with respect to response time, mechanical stability and calibration characteristics. Dependent on the optical properties of the indicator material we used different light emitting diodes (LED's) as the light sources and either a photodiode or a photomultiplier as detector.",
keywords = "Environmental sensing, Fiber-optic, Optical microsensor, Optode, pH, Seawater",
author = "Oliver Kohls and Ingo Klimant and Gerhard Holst and Michael K{\"u}hl",
year = "1997",
doi = "10.1117/12.269958",
language = "English",
volume = "2978",
pages = "82--91",
journal = "Progress in Biomedical Optics and Imaging",
issn = "1605-7422",
publisher = "S P I E - International Society for Optical Engineering",
note = "Micro- and Nanofabricated Electro-Optical Mechanical Systems for Biomedical and Environmental Applications ; Conference date: 10-02-1997 Through 10-02-1997",

}

RIS

TY - GEN

T1 - Development and comparison of pH microoptodes for use in marine systems

AU - Kohls, Oliver

AU - Klimant, Ingo

AU - Holst, Gerhard

AU - Kühl, Michael

PY - 1997

Y1 - 1997

N2 - Traditionally microscale measurements of pH are based on potentiometric measurements with a pH glass microelectrode. The preparation of these electrodes is, however, very time consuming. We developed pH micro-optodes for use in seawater in the range of pH 7 - 9. The optodes are based on immobilized acid-base indicators, which change their color and/or fluorescence properties as a function of the pH. Various dyes were immobilized directly on the tip of a tapered optical fiber by different techniques. We then investigated these pH optodes with respect to response time, mechanical stability and calibration characteristics. Dependent on the optical properties of the indicator material we used different light emitting diodes (LED's) as the light sources and either a photodiode or a photomultiplier as detector.

AB - Traditionally microscale measurements of pH are based on potentiometric measurements with a pH glass microelectrode. The preparation of these electrodes is, however, very time consuming. We developed pH micro-optodes for use in seawater in the range of pH 7 - 9. The optodes are based on immobilized acid-base indicators, which change their color and/or fluorescence properties as a function of the pH. Various dyes were immobilized directly on the tip of a tapered optical fiber by different techniques. We then investigated these pH optodes with respect to response time, mechanical stability and calibration characteristics. Dependent on the optical properties of the indicator material we used different light emitting diodes (LED's) as the light sources and either a photodiode or a photomultiplier as detector.

KW - Environmental sensing

KW - Fiber-optic

KW - Optical microsensor

KW - Optode

KW - pH

KW - Seawater

U2 - 10.1117/12.269958

DO - 10.1117/12.269958

M3 - Conference article

AN - SCOPUS:0003475264

VL - 2978

SP - 82

EP - 91

JO - Progress in Biomedical Optics and Imaging

JF - Progress in Biomedical Optics and Imaging

SN - 1605-7422

T2 - Micro- and Nanofabricated Electro-Optical Mechanical Systems for Biomedical and Environmental Applications

Y2 - 10 February 1997 through 10 February 1997

ER -

ID: 201683011