Artículo
Abstract:
An AIR-FTIR study of the vibrational spectrum of glyphosate (N- phosphonomethylglycine) in aqueous solution 1 M in NaCl is reported. Band assignments are given in the 1800-850 cm-1 range based on the analysis of the spectral changes from low to high pH values (2-11). Potentiometric titrations of glyphosate are performed at 0.1, 0.5, and 1 M ionic strengths in NaCl and the pK(a2), PK(a3), and pK(a4) values determined. A chemometric analysis of the spectral data has been carried out to support the assignments and reproduce the pKa values. In addition, the ATR-FTIR spectrum of the 1:1 Fe(III)/glyphosate complex in aqUeOuS solution is analyzed by comparison with that of the free ligand. An ATR-FTIR study of the vibrational spectrum of glyphosate (N-phosphonomethylglycine) in aqueous solution 1 M in NaCl is reported. Band assignments are given in the 1800-850 cm-1 range based on the analysis of the spectral changes from low to high pH values (2-11). Potentiometric titrations of glyphosate are performed at 0.1, 0.5, and 1 M ionic strengths in NaCl and the pKa2, pKa3, and pKa4 values determined. A chemometric analysis of the spectral data has been carried out to support the assignments and reproduce the pKa values. In addition, the ATR-FTIR spectrum of the 1:1 Fe(III)/glyphosate complex in aqueous solution is analyzed by comparison with that of the free ligand.
Registro:
| Documento: | Artículo |
| Título: | An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution |
| Autor: | Barja, B.C.; Dos Santos Afonso, M. |
| Ciudad: | Washington, DC, United States |
| Filiación: | Inquimae Departamento de Quimica Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, 1428, Buenos Aires, Argentina |
| Palabras clave: | Fourier transform infrared spectroscopy; Herbicides; Ionic strength; Iron; pH effects; Sodium chloride; Solutions; Titration; Chemometric analysis; Glyphosate; Water pollution; glyphosate; iron complex; aqueous solution; article; chemical analysis; fourier transformation; infrared spectrometry; water pollutant; water pollution |
| Año: | 1998 |
| Volumen: | 32 |
| Número: | 21 |
| Página de inicio: | 3331 |
| Página de fin: | 3335 |
| DOI: | http://dx.doi.org/10.1021/es9800380 |
| Título revista: | Environmental Science and Technology |
| Título revista abreviado: | Environ. Sci. Technol. |
| ISSN: | 0013936X |
| CODEN: | ESTHA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0013936X_v32_n21_p3331_Barja |
Referencias:
- Franz, J., Mao, M., Siroki, J., (1997) A Unique Global Herbicide; ACS Monograph 189; American Chemical Society: Washington, DC
- Hance, R.I., (1976) Pestic. Sci., 7, pp. 363-366
- Shoval, S., Yariv, S., (1979) Clays Clay Miner., 27, pp. 19-28
- Glass, R.L.J., (1987) Agric. Food. Chem., 35, pp. 497-500
- McConnell, J.S., Hossner, L.R.J., (1989) Agric. Food Chem., 37, pp. 555-560
- Morillo, E., Undabeytia, T., Maqueda, C., (1997) Environ. Sci. Technol., 31, pp. 3588-3592
- McBride, M., Kung, K., (1989) Soil Sci. Soc. Arn.., pp. 1668-1673
- Rueppel, M.L., Brightwell, B.B., Marvel, J.T.J., (1977) Agric. Food Chem., 25 (3), pp. 517-527
- Sprankle, P., Meggit, W.F., Penner, D., (1975) Weed Sci., pp. 224-228
- Sprankle, P., Meggit, W.F., Penner, D., (1975) Weed Sci., pp. 229-234
- Harrick, N.J., (1981) Internal Reflection Spectroscopy, 3rd Ed.; Harrick Scientific Corporation: New York
- Shoval, S., Yariv, S., (1981) Agrochimica, pp. 377-386
- Piccolo, A., Celano, G.J., (1993) Environ. Sci. Health, 28, p. 447457
- Reilly, C.N., Sawyer, D.T., (1961) Experiments for Instrumental Methods; McGraw-Hill: New York
- Hug, S.J., Sulzberger, B., (1994) Langmuir, 10, pp. 3587-3597
- Kubista, M., Sjoback, R., Albinson, B., (1993) Anal. Chem., 65, pp. 994-998
- Parise, A., Siep, L., Pollak, S., Olabe, J., (1995) AnalesAsoc. Qca. Argentina, 83, pp. 211-223
- Malinowski, E.R., (1991) Factor Analysis in Chemistry, 2nd Ed.; J. Wiley: New York
- Massart, D., Vandeginste, B., Deming, S.N., Michotte, Y., Kaufman, L., (1988) Chemometrics: a Textbook; Eisevier: New York
- Maeder, M., Zuberbuhler, A., (1990) Anal. Chem., 62, p. 2220
- Nakamoto, K., (1986) Infrared and Raman Spectra of Inorganic and Coordination Compounds; 4th Ed.; J. Wiley. New York
- Tejedor-Tejedor, M.I., Anderson, M.A., (1990) Langmuir, pp. 602-611
- Bellamy, L.J., (1960) Tlie Infrared Spectra of Complex Molecules; J. Wiley: New York
- Roeges, N.P.G., (1994) A Guide to the Complete Interpretation of Infrared Spectra of Organic Structures; J. Wiley
- Novak, A., Cotrait, M., (1966) Ann. Chim., 1, pp. 263-270
- Appleton, T.G., Hall, J.R., McMahon, I.J., (1986) Inorg. Chem., 25, pp. 726-734
- Subramaniam, V., Hoggard, P.E.J., (1988) Agric. Food Chem., 36, pp. 1326-1329
- LundagerMadsen, Christensen, Gottlieb-Petersen, C., (1978) Acta Chem. Scand., 32, pp. 79-83
- Motekaitis, R., Martell, A.J., (1985) Coord. Chem., 14, pp. 139-149
- De Levie, R., (1996) Anal. Chem., 60, pp. 585-590
Citas:
---------- APA ----------
Barja, B.C. & Dos Santos Afonso, M. (1998) . An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution. Environmental Science and Technology, 32(21), 3331-3335.http://dx.doi.org/10.1021/es9800380
---------- CHICAGO ----------
Barja, B.C., Dos Santos Afonso, M. "An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution" . Environmental Science and Technology 32, no. 21 (1998) : 3331-3335.http://dx.doi.org/10.1021/es9800380
---------- MLA ----------
Barja, B.C., Dos Santos Afonso, M. "An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution" . Environmental Science and Technology, vol. 32, no. 21, 1998, pp. 3331-3335.http://dx.doi.org/10.1021/es9800380
---------- VANCOUVER ----------
Barja, B.C., Dos Santos Afonso, M. An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution. Environ. Sci. Technol. 1998;32(21):3331-3335.http://dx.doi.org/10.1021/es9800380
