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Photoacoustic spectroscopic studies of methylene blue and malachite green adsorbed on silica |
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| Authors: | V. Plichon D. Lelievre M. Le Liboux D. Fournier J.L. Cecile S. Boissay |
| Affiliation: | Laboratoire de Chimie Analytique des Milieux Réactionnels, ESPCI, 10 rue Vauquelin, F- 75231 Paris Cedex 05 France;Laboratoire d''Optique Physique, ESPCI, 10 rue Vauquelin, F-75231 Paris Cedex 05 France;Département de Minéralurgie, BRGM, BP 6009, F-45060 OrléansFrance |
| Abstract: | Spectra and calibration curves of methylene blue and malachite green adsorbed on silica show that photoacoustic spectroscopy can be used for the determination of these compounds. The problem of the existence of an equilibrium between monomer and dimer for methylene blue is considered. |
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