Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy

The natural attenuation of oil spill contaminated soils, with different exposure times, in Patagonian environment was evaluated by the use of several parameters to quantify the degree of changes in the composition. Column (CC) and gas chromatography (GC); UV-visible and 1H NMR techniques were used t...

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Autores principales:	Ríos, S.M., Nudelman, N.S.
Formato:	JOUR
Materias:	Compositional parameters Environmental exposure NMR spectra of petroleum samples Oil spill behavior Patagonian soils Petroleum residues aliphatic compound aromatic compound carboxylic acid hydrocarbon petroleum Gas chromatography Nuclear magnetic resonance spectroscopy Oil spills Parameter estimation Soil surveys crude oil gas chromatography natural attenuation nuclear magnetic resonance oil spill principal component analysis soil pollution transformation analysis of variance article chemical analysis chemical composition column chromatography environmental impact exposure parameter proton nuclear magnetic resonance proton transport quantitative analysis soil analysis ultraviolet radiation Argentina Biodegradation, Environmental Chromatography, Gas Fertilizers Magnetic Resonance Spectroscopy Petroleum Principal Component Analysis Soil Soil Pollutants Patagonia South America
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_09593330_v29_n1_p23_Rios
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_09593330_v29_n1_p23_Rios2023-10-03T15:52:47Z Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy Ríos, S.M. Nudelman, N.S. Compositional parameters Environmental exposure NMR spectra of petroleum samples Oil spill behavior Patagonian soils Petroleum residues aliphatic compound aromatic compound carboxylic acid hydrocarbon petroleum Gas chromatography Nuclear magnetic resonance spectroscopy Oil spills Parameter estimation Soil surveys carboxylic acid crude oil gas chromatography natural attenuation nuclear magnetic resonance oil spill principal component analysis soil pollution transformation analysis of variance article chemical analysis chemical composition column chromatography environmental impact exposure gas chromatography oil spill parameter principal component analysis proton nuclear magnetic resonance proton transport quantitative analysis soil analysis soil pollution ultraviolet radiation Argentina Biodegradation, Environmental Chromatography, Gas Fertilizers Magnetic Resonance Spectroscopy Petroleum Principal Component Analysis Soil Soil Pollutants Patagonia South America The natural attenuation of oil spill contaminated soils, with different exposure times, in Patagonian environment was evaluated by the use of several parameters to quantify the degree of changes in the composition. Column (CC) and gas chromatography (GC); UV-visible and 1H NMR techniques were used to determine compositional and structural indexes. The results show that the nC18/Phytane GC index, that was 1.5 for crude oil, decreased with exposure time to values between 0.97-0.17 in the residues. The percentages for the four aliphatic (H1 - H4) and the aromatic (HA) proton types, determined by 1H NMR, were: 12.9-34.4 (H1), 43.3-60.2 (H2), 4.24-24.2 (H3), 1.33-17.9 (H4), and 0.44-4.81 (HA), in crude oil and residues, respectively. Furthermore, the characterization of significant 1H NMR signals indicated the presence of carboxylic acid hydrogens in the polar fraction of the crude oil and of residues of two years age. The Principal Components Analysis (PCA) of the parameters determined by CC, GC and NMR showed that the first three principal components (1st, 2nd, and 3rd PC), accounted for more than 84% of variance. The 1st PC is largely influenced by H3, H1, H4, H2, and the nC18/Phytane GC parameter, in the order given. The evaluation of the different parameters by PCA suggests that 1H NMR is more useful than GC to evaluate the degree of the chemical transformations of oil spills in soils. © Taylor & Francis, 2008. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09593330_v29_n1_p23_Rios
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Compositional parameters Environmental exposure NMR spectra of petroleum samples Oil spill behavior Patagonian soils Petroleum residues aliphatic compound aromatic compound carboxylic acid hydrocarbon petroleum Gas chromatography Nuclear magnetic resonance spectroscopy Oil spills Parameter estimation Soil surveys carboxylic acid crude oil gas chromatography natural attenuation nuclear magnetic resonance oil spill principal component analysis soil pollution transformation analysis of variance article chemical analysis chemical composition column chromatography environmental impact exposure gas chromatography oil spill parameter principal component analysis proton nuclear magnetic resonance proton transport quantitative analysis soil analysis soil pollution ultraviolet radiation Argentina Biodegradation, Environmental Chromatography, Gas Fertilizers Magnetic Resonance Spectroscopy Petroleum Principal Component Analysis Soil Soil Pollutants Patagonia South America
spellingShingle	Compositional parameters Environmental exposure NMR spectra of petroleum samples Oil spill behavior Patagonian soils Petroleum residues aliphatic compound aromatic compound carboxylic acid hydrocarbon petroleum Gas chromatography Nuclear magnetic resonance spectroscopy Oil spills Parameter estimation Soil surveys carboxylic acid crude oil gas chromatography natural attenuation nuclear magnetic resonance oil spill principal component analysis soil pollution transformation analysis of variance article chemical analysis chemical composition column chromatography environmental impact exposure gas chromatography oil spill parameter principal component analysis proton nuclear magnetic resonance proton transport quantitative analysis soil analysis soil pollution ultraviolet radiation Argentina Biodegradation, Environmental Chromatography, Gas Fertilizers Magnetic Resonance Spectroscopy Petroleum Principal Component Analysis Soil Soil Pollutants Patagonia South America Ríos, S.M. Nudelman, N.S. Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy
topic_facet	Compositional parameters Environmental exposure NMR spectra of petroleum samples Oil spill behavior Patagonian soils Petroleum residues aliphatic compound aromatic compound carboxylic acid hydrocarbon petroleum Gas chromatography Nuclear magnetic resonance spectroscopy Oil spills Parameter estimation Soil surveys carboxylic acid crude oil gas chromatography natural attenuation nuclear magnetic resonance oil spill principal component analysis soil pollution transformation analysis of variance article chemical analysis chemical composition column chromatography environmental impact exposure gas chromatography oil spill parameter principal component analysis proton nuclear magnetic resonance proton transport quantitative analysis soil analysis soil pollution ultraviolet radiation Argentina Biodegradation, Environmental Chromatography, Gas Fertilizers Magnetic Resonance Spectroscopy Petroleum Principal Component Analysis Soil Soil Pollutants Patagonia South America
description	The natural attenuation of oil spill contaminated soils, with different exposure times, in Patagonian environment was evaluated by the use of several parameters to quantify the degree of changes in the composition. Column (CC) and gas chromatography (GC); UV-visible and 1H NMR techniques were used to determine compositional and structural indexes. The results show that the nC18/Phytane GC index, that was 1.5 for crude oil, decreased with exposure time to values between 0.97-0.17 in the residues. The percentages for the four aliphatic (H1 - H4) and the aromatic (HA) proton types, determined by 1H NMR, were: 12.9-34.4 (H1), 43.3-60.2 (H2), 4.24-24.2 (H3), 1.33-17.9 (H4), and 0.44-4.81 (HA), in crude oil and residues, respectively. Furthermore, the characterization of significant 1H NMR signals indicated the presence of carboxylic acid hydrogens in the polar fraction of the crude oil and of residues of two years age. The Principal Components Analysis (PCA) of the parameters determined by CC, GC and NMR showed that the first three principal components (1st, 2nd, and 3rd PC), accounted for more than 84% of variance. The 1st PC is largely influenced by H3, H1, H4, H2, and the nC18/Phytane GC parameter, in the order given. The evaluation of the different parameters by PCA suggests that 1H NMR is more useful than GC to evaluate the degree of the chemical transformations of oil spills in soils. © Taylor & Francis, 2008.
format	JOUR
author	Ríos, S.M. Nudelman, N.S.
author_facet	Ríos, S.M. Nudelman, N.S.
author_sort	Ríos, S.M.
title	Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy
title_short	Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy
title_full	Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy
title_fullStr	Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy
title_full_unstemmed	Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy
title_sort	natural attenuation of oil spills in patagonian soils. characterization by 1h nmr spectroscopy
url	http://hdl.handle.net/20.500.12110/paper_09593330_v29_n1_p23_Rios
work_keys_str_mv	AT riossm naturalattenuationofoilspillsinpatagoniansoilscharacterizationby1hnmrspectroscopy AT nudelmanns naturalattenuationofoilspillsinpatagoniansoilscharacterizationby1hnmrspectroscopy
_version_	1807314905125093376

Natural attenuation of oil spills in Patagonian soils. Characterization by 1H NMR spectroscopy

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