Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

A method for simultaneous spectrophotometric determination of calcium and magnesium in mineral waters using multivariate calibration methods is proposed. The method is based on the development of the reaction between the analytes and Methylthymol Blue at pH 11. Two operational modes were used: static (spectral information) and flow injection (FI) (spectral and kinetic information). The selection of variables was studied. A series of synthetic solutions containing different concentrations of calcium and magnesium were used to check the prediction ability of the partial least-squares models. The method was applied to the analysis of mineral waters and the results were compared with those obtained by complexometry. No significant differences at the 95% confidence level were found. The proposed method is simple, accurate and reproducible, and it could be easily adapted as a portable (static mode) or automatic (FI) method.

Registro:

Documento: Artículo
Título:Simultaneous spectrophotometric determination of calcium and magnesium in mineral waters by means of multivariate partial least-squares regression
Autor:Blasco, F.; Medina-Hernández, M.J.; Sagrado, S.; Fernández, F.M.
Filiación:Departamento de Química Analítica, Facultad de Farmacia, Universidad de Valencia, C/Vicente Andres Estelles s/n, 46100 Buurjassot, Valencia, Spain
Laboratorio de Análisis de Trazas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Calcium; Flow injection; Magnesium; Mineral waters; Multicomponent analysis; Partial least-squares regression; calcium; dye; magnesium; mineral water; accuracy; analytic method; article; autoanalysis; calibration; controlled study; data analysis; drug concentration; flow injection analysis; intermethod comparison; multivariate analysis; ph; regression analysis; spectrophotometry; water analysis; Calcium; Least-Squares Analysis; Magnesium; Mineral Waters; Multivariate Analysis; Sensitivity and Specificity; Spectrophotometry
Año:1997
Volumen:122
Número:7
Página de inicio:639
Página de fin:643
DOI: http://dx.doi.org/10.1039/a608244k
Título revista:Analyst
Título revista abreviado:Analyst
ISSN:00032654
CODEN:ANALA
CAS:Calcium, 7440-70-2; Magnesium, 7439-95-4
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032654_v122_n7_p639_Blasco

Referencias:

  • Franson, M.A.H., (1992) Standard Methods for the Examination of Water and Wastewater, , American Public Health Association and Water Polution Control Federation, Washington, DC, 18th edn
  • Basson, W.P., Van Staden, J.F., (1980) Fresenius' Z. Anal. Chem., 302, p. 370
  • Wada, H., Ozawa, T., Nakagawa, G., Asano, Y., Ito, S., (1988) Anal. Chim. Acta, 211, p. 213
  • Foster, R.J., Diamond, D., (1992) Anal. Chem., 64, p. 1721
  • Yuan, Y., (1988) Anal. Chim. Acta, 212, p. 291
  • Cañete, F., Ríos, A., Luque De Castro, M.D., Valcárcel, M., (1987) Analyst, 112, p. 262
  • Blanco, M., Coello, J., Gené, J., Iturriaga, H., Maspoch, S., (1989) Anal. Chim. Acta, 224, p. 23
  • Gómez, E., Estela, J.M., Cerdá, V., (1991) Anal. Chim. Acta, 249, p. 513
  • Gómez, E., Tomás, C., Cladera, A., Estela, J.M., Cerdá, V., (1995) Analyst, 120, p. 1181
  • Novikov, E.A., Shpigun, L.K., (1993) Zh. Anal. Khim., 48, p. 1326
  • Ruisánchez, I., Rius, A., Larrechi, M.S., Callao, M.P., Rius, F.X., (1994) Chemom. Intell. Lab. Syst., 24, p. 55
  • Rius, A., Callao, M.P., Rius, F.X., (1995) Anal. Chim. Acta, 316, p. 27
  • Haaland, D.M., Thomas, E.V., (1988) Anal. Chem., 60, p. 1193
  • Leardi, R., (1994) J. Chemom., 8, p. 65
  • Xu, L., Schechter, I., (1996) Anal. Chem., 68, p. 2392
  • Garrido Frenich, A., Jouan-Rimbaud, D., Massart, D.L., Kuttatharmmakul, S., Martinez Galera, M., Martinez Vidal, J.L., (1995) Analyst, 120, p. 2787
  • Cela, R., (1994) Avances en Quimiometria Práctica, , Universidad de Santiago de Compostela, Santiago de Compostela

Citas:

---------- APA ----------
Blasco, F., Medina-Hernández, M.J., Sagrado, S. & Fernández, F.M. (1997) . Simultaneous spectrophotometric determination of calcium and magnesium in mineral waters by means of multivariate partial least-squares regression. Analyst, 122(7), 639-643.
http://dx.doi.org/10.1039/a608244k
---------- CHICAGO ----------
Blasco, F., Medina-Hernández, M.J., Sagrado, S., Fernández, F.M. "Simultaneous spectrophotometric determination of calcium and magnesium in mineral waters by means of multivariate partial least-squares regression" . Analyst 122, no. 7 (1997) : 639-643.
http://dx.doi.org/10.1039/a608244k
---------- MLA ----------
Blasco, F., Medina-Hernández, M.J., Sagrado, S., Fernández, F.M. "Simultaneous spectrophotometric determination of calcium and magnesium in mineral waters by means of multivariate partial least-squares regression" . Analyst, vol. 122, no. 7, 1997, pp. 639-643.
http://dx.doi.org/10.1039/a608244k
---------- VANCOUVER ----------
Blasco, F., Medina-Hernández, M.J., Sagrado, S., Fernández, F.M. Simultaneous spectrophotometric determination of calcium and magnesium in mineral waters by means of multivariate partial least-squares regression. Analyst. 1997;122(7):639-643.
http://dx.doi.org/10.1039/a608244k