Development of an optode membrane for high pH values.

Afsaneh Safavi; Marzieh Sadeghi

doi:10.1016/j.saa.2006.03.034

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PubMed · 17030006

Development of an optode membrane for high pH values.

Afsaneh Safavi·Marzieh Sadeghi

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Abstract

The development of an optical pH sensor for high pH values is described based on the immobilization of Aniline Blue on an optically transparent triacetylcellulose membrane. The membrane is useful for repetitive and reversible pH measurements in the pH range of 8.8-13. The relative standard deviation is about 1.6% and 2% for seven measurements of the maximum change at 579 nm from pH 9 to 10.8 and from pH 11.1 to 12.8, respectively. Other advantages of the sensor include rapid equilibration time, long term stability, reversibility, high sensitivity, freedom from interference of other cations and ease of fabrication.

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Aniline Compounds Electrodes Hydrogen-Ion Concentration Membranes, Artificial Solutions Spectrophotometry, Ultraviolet Time Factors Journal Article Research Support, Non-U.S. Gov't

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Afsaneh Safavi, Marzieh Sadeghi. 2006-04-07. Development of an optode membrane for high pH values.. https://doi.org/10.1016/j.saa.2006.03.034

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