دورية أكاديمية
Fractionation of natural organic matter in drinking water and characterization by 13C cross-polarization magic-angle spinning NMR spectroscopy and size exclusion chromatography.
| العنوان: | Fractionation of natural organic matter in drinking water and characterization by 13C cross-polarization magic-angle spinning NMR spectroscopy and size exclusion chromatography. |
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| المؤلفون: | Wong S; Institut für Polymerforschung, Dresden, Germany., Hanna JV, King S, Carroll TJ, Eldridge RJ, Dixon DR, Bolto BA, Hesse S, Abbt-Braun G, Frimmel FH |
| المصدر: | Environmental science & technology [Environ Sci Technol] 2002 Aug 15; Vol. 36 (16), pp. 3497-503. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 0213155 Publication Model: Print Cited Medium: Print ISSN: 0013-936X (Print) Linking ISSN: 0013936X NLM ISO Abbreviation: Environ Sci Technol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Washington DC : American Chemical Society Original Publication: Easton, Pa. : American Chemical Society, c1967- |
| مواضيع طبية MeSH: | Water Supply*, Environmental Monitoring/*methods , Organic Chemicals/*analysis, Carbohydrates/analysis ; Carbon Isotopes ; Chromatography, Gel ; Magnetic Resonance Spectroscopy ; Molecular Weight |
| مستخلص: | Natural organic matter from drinking water sources was fractionated, and the fractions were characterized by NMR and SEC with the aim of relating NOM structure to treatability. Organic matter was isolated from two Australian surface waters (Horsham, Moorabool) by reverse osmosis and from a groundwater (Wanneroo) by anion exchange. The isolates were fractionated according to polarity and charge by resin adsorption. 13C NMR spectra of the freeze-dried fractions showed the most hydrophobic fraction to be high in aliphatic and aromatic carbon while slightly hydrophobic organics have more carbonyl and alkoxyl carbon. The Horsham and Wanneroo hydrophilic fractions show strong alkoxyl signals attributed to carbohydrate. Moorabool hydrophilics contain aromatic (phenolic) carbon; the apparent absence of carbohydrate appears to be an artifact. Size-exclusion chromatograms were recorded on the original and fractionated organics with both UV and dissolved organic carbon detection. The Horsham and Moorabool organics have similar molecular size distributions while Wanneroo is dominated by strongly absorbing species having large hydrodynamic radii. The hydrophobic and charged hydrophilic fractions also have high apparent MW, while the neutral fraction is higher in low-MW compounds of relatively low specific absorbance, suggestive of carbohydrates. |
| المشرفين على المادة: | 0 (Carbohydrates) 0 (Carbon Isotopes) 0 (Organic Chemicals) |
| تواريخ الأحداث: | Date Created: 20020907 Date Completed: 20030129 Latest Revision: 20190714 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1021/es010975z |
| PMID: | 12214640 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 0013-936X |
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| DOI: | 10.1021/es010975z |