Degradation of cellulosic materials under the alkaline conditions of a cementitious repository for low and intermediate level radioactive waste. Part I : Identification of degradation products
Identifieur interne : 000F92 ( PascalFrancis/Corpus ); précédent : 000F91; suivant : 000F93Degradation of cellulosic materials under the alkaline conditions of a cementitious repository for low and intermediate level radioactive waste. Part I : Identification of degradation products
Auteurs : M. A. Glaus ; L. R. Van Loon ; S. Achatz ; A. Chodura ; K. FischerSource :
- Analytica chimica acta [ 0003-2670 ] ; 1999.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
In order to assess the potential role of cellulose degradation products as metal-binding chelates in a repository for radioactive waste, different cellulosic materials (pure cellulose, cotton, tissues and recycling paper) were degraded under the chemical conditions of cement pore water (pH 13.3). The degradation products formed were characterised using different separation techniques (HPIEC, HPAEC, GC-MS, MS/MS) and by high resolution 1H-NMR spectroscopy. The main degradation products of pure cellulose are the diastereomeric α-isosaccharinic acid (α-ISA) and β-isosaccharinic acid (β-ISA), which accounted for ∼80% of total dissolved organic carbon formed. Minor components are short chain aliphatic acids such as formic acid, acetic acid, lactic acid and threonic acid comprising less than 10% of total dissolved organic carbon. The degradation of the other cellulosic materials resulted in lower amounts of α-ISA and β-ISA and in higher yields of small organic acids (acetic acid) and of unidentified compounds. The combination of the different MS and NMR techniques unequivocally shows the structural identity of β-ISA.
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NO : | PASCAL 99-0514909 INIST |
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ET : | Degradation of cellulosic materials under the alkaline conditions of a cementitious repository for low and intermediate level radioactive waste. Part I : Identification of degradation products |
AU : | GLAUS (M. A.); VAN LOON (L. R.); ACHATZ (S.); CHODURA (A.); FISCHER (K.) |
AF : | Waste Management Laboratory, Paul Scherrer Institut/5232 Villigen PSI/Suisse (1 aut., 2 aut.); University of Trier, Department of Inorganic and Analytical Chemistry, Universitätsring 15/54286 Trier/Allemagne (3 aut., 4 aut., 5 aut.); GSF-National Research Center for Environment and Health, Institute of Ecological Chemistry, Ingolstaedter Landstr. 1/85764, Neuherberg/Allemagne (4 aut., 5 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Analytica chimica acta; ISSN 0003-2670; Coden ACACAM; Pays-Bas; Da. 1999; Vol. 398; No. 1; Pp. 111-122; Bibl. 25 ref. |
LA : | Anglais |
EA : | In order to assess the potential role of cellulose degradation products as metal-binding chelates in a repository for radioactive waste, different cellulosic materials (pure cellulose, cotton, tissues and recycling paper) were degraded under the chemical conditions of cement pore water (pH 13.3). The degradation products formed were characterised using different separation techniques (HPIEC, HPAEC, GC-MS, MS/MS) and by high resolution 1H-NMR spectroscopy. The main degradation products of pure cellulose are the diastereomeric α-isosaccharinic acid (α-ISA) and β-isosaccharinic acid (β-ISA), which accounted for ∼80% of total dissolved organic carbon formed. Minor components are short chain aliphatic acids such as formic acid, acetic acid, lactic acid and threonic acid comprising less than 10% of total dissolved organic carbon. The degradation of the other cellulosic materials resulted in lower amounts of α-ISA and β-ISA and in higher yields of small organic acids (acetic acid) and of unidentified compounds. The combination of the different MS and NMR techniques unequivocally shows the structural identity of β-ISA. |
CC : | 001C04G; 001D09C01 |
FD : | Analyse chimique; Analyse multiélément; Analyse qualitative; Analyse structurale; Produit dégradation; Cellulose dérivé; Spectrométrie RMN; Méthode couplée; Chromatographie phase gazeuse; Spectrométrie masse |
ED : | Chemical analysis; Multicomponent analysis; Qualitative analysis; Structural analysis; Degradation product; Cellulose derivatives; NMR spectrometry; Coupled method; Gas chromatography; Mass spectrometry |
SD : | Análisis químico; Análisis multielemento; Análisis cualitativo; Análisis estructural; Producto degradación; Celulosa derivado; Espectrometría RMN; Método acoplado; Cromatografía fase gaseosa; Espectrometría masa |
LO : | INIST-3950.354000088084390130 |
ID : | 99-0514909 |
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Pascal:99-0514909Le document en format XML
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<front><div type="abstract" xml:lang="en">In order to assess the potential role of cellulose degradation products as metal-binding chelates in a repository for radioactive waste, different cellulosic materials (pure cellulose, cotton, tissues and recycling paper) were degraded under the chemical conditions of cement pore water (pH 13.3). The degradation products formed were characterised using different separation techniques (HPIEC, HPAEC, GC-MS, MS/MS) and by high resolution <sup>1</sup>
H-NMR spectroscopy. The main degradation products of pure cellulose are the diastereomeric α-isosaccharinic acid (α-ISA) and β-isosaccharinic acid (β-ISA), which accounted for ∼80% of total dissolved organic carbon formed. Minor components are short chain aliphatic acids such as formic acid, acetic acid, lactic acid and threonic acid comprising less than 10% of total dissolved organic carbon. The degradation of the other cellulosic materials resulted in lower amounts of α-ISA and β-ISA and in higher yields of small organic acids (acetic acid) and of unidentified compounds. The combination of the different MS and NMR techniques unequivocally shows the structural identity of β-ISA.</div>
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<ET>Degradation of cellulosic materials under the alkaline conditions of a cementitious repository for low and intermediate level radioactive waste. Part I : Identification of degradation products</ET>
<AU>GLAUS (M. A.); VAN LOON (L. R.); ACHATZ (S.); CHODURA (A.); FISCHER (K.)</AU>
<AF>Waste Management Laboratory, Paul Scherrer Institut/5232 Villigen PSI/Suisse (1 aut., 2 aut.); University of Trier, Department of Inorganic and Analytical Chemistry, Universitätsring 15/54286 Trier/Allemagne (3 aut., 4 aut., 5 aut.); GSF-National Research Center for Environment and Health, Institute of Ecological Chemistry, Ingolstaedter Landstr. 1/85764, Neuherberg/Allemagne (4 aut., 5 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
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<LA>Anglais</LA>
<EA>In order to assess the potential role of cellulose degradation products as metal-binding chelates in a repository for radioactive waste, different cellulosic materials (pure cellulose, cotton, tissues and recycling paper) were degraded under the chemical conditions of cement pore water (pH 13.3). The degradation products formed were characterised using different separation techniques (HPIEC, HPAEC, GC-MS, MS/MS) and by high resolution <sup>1</sup>
H-NMR spectroscopy. The main degradation products of pure cellulose are the diastereomeric α-isosaccharinic acid (α-ISA) and β-isosaccharinic acid (β-ISA), which accounted for ∼80% of total dissolved organic carbon formed. Minor components are short chain aliphatic acids such as formic acid, acetic acid, lactic acid and threonic acid comprising less than 10% of total dissolved organic carbon. The degradation of the other cellulosic materials resulted in lower amounts of α-ISA and β-ISA and in higher yields of small organic acids (acetic acid) and of unidentified compounds. The combination of the different MS and NMR techniques unequivocally shows the structural identity of β-ISA.</EA>
<CC>001C04G; 001D09C01</CC>
<FD>Analyse chimique; Analyse multiélément; Analyse qualitative; Analyse structurale; Produit dégradation; Cellulose dérivé; Spectrométrie RMN; Méthode couplée; Chromatographie phase gazeuse; Spectrométrie masse</FD>
<ED>Chemical analysis; Multicomponent analysis; Qualitative analysis; Structural analysis; Degradation product; Cellulose derivatives; NMR spectrometry; Coupled method; Gas chromatography; Mass spectrometry</ED>
<SD>Análisis químico; Análisis multielemento; Análisis cualitativo; Análisis estructural; Producto degradación; Celulosa derivado; Espectrometría RMN; Método acoplado; Cromatografía fase gaseosa; Espectrometría masa</SD>
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