The adaptation of coated piezoelectric devices for use in the detection of gases in aqueous solutions |
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| Authors: | Lurance M Webber George G Guilbault |
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| Institution: | Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70122 U.S.A. |
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| Abstract: | A method for the determination of ammonia and hydrogen sulfide in aqueous solution is presented. This method involves the use of a gas-permeable membrane which isolates the piezoelectric crystal device from the solution yet allows the desired gases to pass. Concentrations up to 0.45 M for NH3, and 9 · 10-4 M for H2S give linear calibration curves of concentration vs. frequency change. |
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