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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2001
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| Online Access: | https://www.redalyc.org/articulo.oa?id=32773405 |
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| _version_ | 1866811648839254016 |
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| author | Kely Viviane de Souza |
| author_facet | Kely Viviane de Souza |
| contents | Spectrophotometric determination of phenol in the presence of congeners by multivariated calibration Kely Viviane de Souza Patricio Peralta-Zamora Multidisciplinaria (Ciencias Naturales y Exactas) Phenol multivariated calibration spectrophotometric determination The generation of poly-hydroxilated transient species during the photochemical treatment of phenol usuallyimpedes the spectrophotmetric monitoring of its degradation process. Frequently, the appearance of compoundssuch as pyrocatechol, hydroquinone and benzoquinone produces serious spectral interference, whichhinder the use of the classical univariate calibration process. In this work, the use of multivariate calibrationis proposed to permit the spectrophotometric determination of phenol in the presence of these intermediates.Using 20 synthetic mixtures containing phenol and the interferents, a calibration model was developed byusing a partial least square regression process (PLSR) and processing the absorbance signal between 180and 300 nm. The model was validated by using 3 synthetic mixtures. In this operation, typical errors lowerthan 3% were observed. Close correlation between the results obtained by liquid chromatography and theproposed method was also observed. 2001 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32773405 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.73 |
| format | Artículo científico |
| id | redalyc_32773405 |
| language | en |
| publishDate | 2001 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Spectrophotometric determination of phenol in the presence of congeners by multivariated calibration Kely Viviane de Souza Multidisciplinaria (Ciencias Naturales y Exactas) Phenol multivariated calibration spectrophotometric determination Spectrophotometric determination of phenol in the presence of congeners by multivariated calibration Kely Viviane de Souza Patricio Peralta-Zamora Multidisciplinaria (Ciencias Naturales y Exactas) Phenol multivariated calibration spectrophotometric determination The generation of poly-hydroxilated transient species during the photochemical treatment of phenol usuallyimpedes the spectrophotmetric monitoring of its degradation process. Frequently, the appearance of compoundssuch as pyrocatechol, hydroquinone and benzoquinone produces serious spectral interference, whichhinder the use of the classical univariate calibration process. In this work, the use of multivariate calibrationis proposed to permit the spectrophotometric determination of phenol in the presence of these intermediates.Using 20 synthetic mixtures containing phenol and the interferents, a calibration model was developed byusing a partial least square regression process (PLSR) and processing the absorbance signal between 180and 300 nm. The model was validated by using 3 synthetic mixtures. In this operation, typical errors lowerthan 3% were observed. Close correlation between the results obtained by liquid chromatography and theproposed method was also observed. 2001 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32773405 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.73 |
| title | Spectrophotometric determination of phenol in the presence of congeners by multivariated calibration |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Phenol multivariated calibration spectrophotometric determination |
| url | https://www.redalyc.org/articulo.oa?id=32773405 |