Flow dissolution of 1,5-diphenylcarbazide for the determination of chromium(vi)

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An alternative procedure for the flow injection spectrophotometric determination of Cr(VI) with 1,5-diphenylcarbazide (DPC), involving on-line dissolution of the reagent, is presented. Solid DPC (25% m/m in silica) is packed in a PTFE column, which is then incorporated in a single-line flow system s...

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Detalles Bibliográficos
Autor principal: Andrade, F.J
Otros Autores: Tudino, M.B, Troccoli, O.E
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1996
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a ANALA 
100 1 |a Andrade, F.J. 
245 1 0 |a Flow dissolution of 1,5-diphenylcarbazide for the determination of chromium(vi) 
260 |c 1996 
270 1 0 |m Troccoli, O.E.; Laboratorio de Analisis de Trazas, Quimica Inorg Analit Quimica Fisica, Universidad de Buenos Aires, (1428) Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
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504 |a De Andrade, J.C., Rocha, J.C., Pasquini, C., Baccan, N., (1983) Analyst, 108, p. 621 
504 |a De Andrade, J.C., Rocha, J.C., Baccan, N., (1984) Analyst, 109, p. 645 
504 |a De Andrade, J.C., Rocha, J.C., Baccan, N., (1985) Analyst, 110, p. 197 
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504 |a Davies, L., (1993) Efficiency in Research, Development and Production, , The Royal Society of Chemistry, Cambridge 
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520 3 |a An alternative procedure for the flow injection spectrophotometric determination of Cr(VI) with 1,5-diphenylcarbazide (DPC), involving on-line dissolution of the reagent, is presented. Solid DPC (25% m/m in silica) is packed in a PTFE column, which is then incorporated in a single-line flow system so that reagent dissolution is effected as the sample passes through the column. This procedure reduces the chemical contribution to the dispersion value to a minimum and gives a low detection limit owing to the absence of refractive index peaks. An improvement of the figures of merit compared with those reported previously is shown. The calibration graph is linear up to 0.800 mg l-1 Cr(VI), with a slope of 0.49 l mg-1; the detection limit is 0.005 mg l-1. The relative standard deviation is better than 1%.  |l eng 
593 |a Laboratorio de Analisis de Trazas, Departamento de Quimica Inorganica, Ciudad Universitaria, (1428), Buenos Aires, Argentina 
690 1 0 |a CHROMIUM(VI) DETERMINATION 
690 1 0 |a FLOW INJECTION 
690 1 0 |a ON-LINE DISSOLUTION 
690 1 0 |a CHROMIUM 
690 1 0 |a DIPHENYLCARBAZIDE 
690 1 0 |a POLITEF 
690 1 0 |a ARTICLE 
690 1 0 |a DISPERSION 
690 1 0 |a DISSOLUTION 
690 1 0 |a FLOW 
690 1 0 |a REFRACTION INDEX 
700 1 |a Tudino, M.B. 
700 1 |a Troccoli, O.E. 
773 0 |d 1996  |g v. 121  |h pp. 613-616  |k n. 5  |p ANALYST  |x 00032654  |w (AR-BaUEN)CENRE-426  |t Analyst 
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856 4 0 |u https://doi.org/10.1039/an9962100613  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_00032654_v121_n5_p613_Andrade  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032654_v121_n5_p613_Andrade  |y Registro en la Biblioteca Digital 
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962 |a info:eu-repo/semantics/article  |a info:ar-repo/semantics/artículo  |b info:eu-repo/semantics/publishedVersion 
999 |c 79784 

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