An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution

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 gly...

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Autores principales: Barja, B.C., Dos Santos Afonso, M.
Formato: JOUR
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0013936X_v32_n21_p3331_Barja
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_0013936X_v32_n21_p3331_Barja2023-10-03T14:11:38Z An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution Barja, B.C. Dos Santos Afonso, M. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0013936X_v32_n21_p3331_Barja
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
Barja, B.C.
Dos Santos Afonso, M.
An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution
topic_facet 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
description 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.
format JOUR
author Barja, B.C.
Dos Santos Afonso, M.
author_facet Barja, B.C.
Dos Santos Afonso, M.
author_sort Barja, B.C.
title An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution
title_short An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution
title_full An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution
title_fullStr An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution
title_full_unstemmed An ATR-FTIR study of glyphosate and its Fe(III) complex in aqueous solution
title_sort atr-ftir study of glyphosate and its fe(iii) complex in aqueous solution
url http://hdl.handle.net/20.500.12110/paper_0013936X_v32_n21_p3331_Barja
work_keys_str_mv AT barjabc anatrftirstudyofglyphosateanditsfeiiicomplexinaqueoussolution
AT dossantosafonsom anatrftirstudyofglyphosateanditsfeiiicomplexinaqueoussolution
AT barjabc atrftirstudyofglyphosateanditsfeiiicomplexinaqueoussolution
AT dossantosafonsom atrftirstudyofglyphosateanditsfeiiicomplexinaqueoussolution
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