@ARTICLE{EsteveRomero19941381,
author={Esteve Romero, J.S. and Alvarez Rodríguez, L. and García Alvarez-Coque, M.C. and Ramis-Ramos, G.},
title={Spectrophotometric determination of phenols by coupling with diazotized 2,4,6-trimethylaniline in a micellar medium},
journal={The Analyst},
year={1994},
volume={119},
number={6},
pages={1381-1386},
doi={10.1039/AN9941901381},
note={cited By 20},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-37049070504&doi=10.1039%2fAN9941901381&partnerID=40&md5=a2e93e9a3f2cb1e68057e856a2ca9b37},
affiliation={Escola Superior de Tecnologia i Ciències Experimentals, Universitat Jaume i, 12006 Castelló, Spain; Departament de Química Analítica, Facultat de Química, Universitat de València, 46100 Burjassot (València), Spain},
abstract={The unstable absorbances and large values of the blanks obtained when a phenol is determined by coupling with a diazotized arylamine are caused by hydroxy-de-diazoniation of the diazonium ions, followed by coupling of the resulting phenol with the reagent excess in the basic medium. Diazotized 2,4,6-trimethylaniline (TMA) produces 2,4,6-trimethylphenol, which does not couple with the reagent excess, and gives low blanks. A sodium dodecyl sulfate micellar medium is used to prepare the TMA solutions and to catalyse the coupling reaction. The limits of detection were in the range 0.2-4.6 μmol dm-3, with a repeatability of about 2%. The procedure was applied to the determination of epinephrine and paracetamol in pharmaceutical preparations.},
references={Shirmer, R.E., (1982) Modern Methods of Pharmaceutical Analysis, 1, pp. 83-91. , CRC Press Boca Raton, FL; Norwitz, G., Keliher, P.N., (1981) Anal. Chem., 53, p. 56; Norwitz, G., Keliher, P.N., (1981) Anal. Chem., 53, p. 1238; March, J., (1992) Advanced Organic Chemistry, p. 669. , Wiley New York; Kataeva, S.E., Gulitashvili, Sh. V., (1988) Gig. Sanit., 9, p. 37; Baiocchi, C., Gennaro, M.C., Campi, E., Mentasti, E., Aruga, R., (1982) Anal. Lett., 15, p. 1539; Korenman, Ya. Y., Alymova, A.T., Medvedeva, E.L., (1988) Gig. Sanit., 12, p. 45; Love, L.J. Cline, Habarta, J.G., Dorsey, J.G., (1984) Anal. Chem., 56, p. 1133R; Pelizzetti, E., Pramauro, E., (1985) Anal. Chim. Acta, 169, p. 1; Ramis-Ramos, G., Esteve-Romero, J.S., Alvarez-Coque, M.C.García, (1989) Anal. Chim. Acta, 223, p. 327; Esteve-Romero, J.S., Alvarez-Coque, M.C.García, Alfonso, E.F.Simó, Ramis-Ramos, G., (1990) Anal. Chim. Acta, 235, p. 317; Esteve-Romero, J.S., Ramis-Ramos, G., Alvarez-Coque, M.C.García, (1991) J. Colloid Interface Sci., 141, p. 44; Esteve-Romero, J.S., Alvarez-Coque, M.C.García, Ramis-Ramos, G., (1991) Talanta, 38, p. 1285; Rappoport, Z., (1979) CRC Handbook of Tables for Organic Compound Identification, p. 434. , CRC Press Boca Raton, FL, 3rd edn; (1989) US Pharmacopeia XXII, p. 14. , US Pharmacopeial Convention Rockville, MD},
correspondence_address1={Esteve Romero, J.S.; Escola Superior de Tecnologia i Ciències Experimentals, , 12006 Castelló, Spain},
issn={00032654},
language={English},
document_type={Article},
source={Scopus},
}

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Diazotized 2,4,6-trimethylaniline (TMA) produces 2,4,6-trimethylphenol, which does not couple with the reagent excess, and gives low blanks. A sodium dodecyl sulfate micellar medium is used to prepare the TMA solutions and to catalyse the coupling reaction. The limits of detection were in the range 0.2-4.6 μmol dm-3, with a repeatability of about 2%. The procedure was applied to the determination of epinephrine and paracetamol in pharmaceutical preparations.","references":"Shirmer, R.E., (1982) Modern Methods of Pharmaceutical Analysis, 1, pp. 83-91. , CRC Press Boca Raton, FL; Norwitz, G., Keliher, P.N., (1981) Anal. Chem., 53, p. 56; Norwitz, G., Keliher, P.N., (1981) Anal. Chem., 53, p. 1238; March, J., (1992) Advanced Organic Chemistry, p. 669. , Wiley New York; Kataeva, S.E., Gulitashvili, Sh. V., (1988) Gig. Sanit., 9, p. 37; Baiocchi, C., Gennaro, M.C., Campi, E., Mentasti, E., Aruga, R., (1982) Anal. Lett., 15, p. 1539; Korenman, Ya. Y., Alymova, A.T., Medvedeva, E.L., (1988) Gig. Sanit., 12, p. 45; Love, L.J. Cline, Habarta, J.G., Dorsey, J.G., (1984) Anal. Chem., 56, p. 1133R; Pelizzetti, E., Pramauro, E., (1985) Anal. Chim. Acta, 169, p. 1; Ramis-Ramos, G., Esteve-Romero, J.S., Alvarez-Coque, M.C.García, (1989) Anal. Chim. Acta, 223, p. 327; Esteve-Romero, J.S., Alvarez-Coque, M.C.García, Alfonso, E.F.Simó, Ramis-Ramos, G., (1990) Anal. Chim. Acta, 235, p. 317; Esteve-Romero, J.S., Ramis-Ramos, G., Alvarez-Coque, M.C.García, (1991) J. Colloid Interface Sci., 141, p. 44; Esteve-Romero, J.S., Alvarez-Coque, M.C.García, Ramis-Ramos, G., (1991) Talanta, 38, p. 1285; Rappoport, Z., (1979) CRC Handbook of Tables for Organic Compound Identification, p. 434. , CRC Press Boca Raton, FL, 3rd edn; (1989) US Pharmacopeia XXII, p. 14. , US Pharmacopeial Convention Rockville, MD","correspondence_address1":"Esteve Romero, J.S.; Escola Superior de Tecnologia i Ciències Experimentals, , 12006 Castelló, Spain","issn":"00032654","language":"English","document_type":"Article","source":"Scopus","bibtex":"@ARTICLE{EsteveRomero19941381,\nauthor={Esteve Romero, J.S. and Alvarez Rodríguez, L. and García Alvarez-Coque, M.C. and Ramis-Ramos, G.},\ntitle={Spectrophotometric determination of phenols by coupling with diazotized 2,4,6-trimethylaniline in a micellar medium},\njournal={The Analyst},\nyear={1994},\nvolume={119},\nnumber={6},\npages={1381-1386},\ndoi={10.1039/AN9941901381},\nnote={cited By 20},\nurl={https://www.scopus.com/inward/record.uri?eid=2-s2.0-37049070504&doi=10.1039%2fAN9941901381&partnerID=40&md5=a2e93e9a3f2cb1e68057e856a2ca9b37},\naffiliation={Escola Superior de Tecnologia i Ciències Experimentals, Universitat Jaume i, 12006 Castelló, Spain; Departament de Química Analítica, Facultat de Química, Universitat de València, 46100 Burjassot (València), Spain},\nabstract={The unstable absorbances and large values of the blanks obtained when a phenol is determined by coupling with a diazotized arylamine are caused by hydroxy-de-diazoniation of the diazonium ions, followed by coupling of the resulting phenol with the reagent excess in the basic medium. Diazotized 2,4,6-trimethylaniline (TMA) produces 2,4,6-trimethylphenol, which does not couple with the reagent excess, and gives low blanks. A sodium dodecyl sulfate micellar medium is used to prepare the TMA solutions and to catalyse the coupling reaction. The limits of detection were in the range 0.2-4.6 μmol dm-3, with a repeatability of about 2%. The procedure was applied to the determination of epinephrine and paracetamol in pharmaceutical preparations.},\nreferences={Shirmer, R.E., (1982) Modern Methods of Pharmaceutical Analysis, 1, pp. 83-91. , CRC Press Boca Raton, FL; Norwitz, G., Keliher, P.N., (1981) Anal. Chem., 53, p. 56; Norwitz, G., Keliher, P.N., (1981) Anal. Chem., 53, p. 1238; March, J., (1992) Advanced Organic Chemistry, p. 669. , Wiley New York; Kataeva, S.E., Gulitashvili, Sh. V., (1988) Gig. Sanit., 9, p. 37; Baiocchi, C., Gennaro, M.C., Campi, E., Mentasti, E., Aruga, R., (1982) Anal. Lett., 15, p. 1539; Korenman, Ya. Y., Alymova, A.T., Medvedeva, E.L., (1988) Gig. Sanit., 12, p. 45; Love, L.J. Cline, Habarta, J.G., Dorsey, J.G., (1984) Anal. Chem., 56, p. 1133R; Pelizzetti, E., Pramauro, E., (1985) Anal. Chim. Acta, 169, p. 1; Ramis-Ramos, G., Esteve-Romero, J.S., Alvarez-Coque, M.C.García, (1989) Anal. Chim. Acta, 223, p. 327; Esteve-Romero, J.S., Alvarez-Coque, M.C.García, Alfonso, E.F.Simó, Ramis-Ramos, G., (1990) Anal. Chim. Acta, 235, p. 317; Esteve-Romero, J.S., Ramis-Ramos, G., Alvarez-Coque, M.C.García, (1991) J. 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