| Quantification and characterization of condensed organic matter in sediments from the Pearl River Delta and Estuary, South China |
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| 作者姓名： | Yong RAN Ke SUN Baosahn XING Chende SUN |
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| 作者单位： | [1]State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China [2]Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, Massachusetts 01003, USA [3]Key Laboratory of Element and lsotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China |
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| 摘 要： | Nonhydrolyzable carbon （NHC） and black carbon （BC） were measured upon treatments with the HCl/HF/trifluoroacetic acid method, and with the combustion method at 375 ℃, respectively in three contaminated soils from the urban area of Guangzhou and twenty-two bulk and size-fractionated sediments from the Pearl River Delta and Estuary, China. The isolated NHC and BC fractions were also characterized using elementary analysis, radiocarbon accelerated mass spectroscopy （AMS）, solid state ^13C cross-polarization and magic angle spinning unclear magnetic resonance spectroscopy （^13C-CP/MAS NMR）, Fourier transformed infrared spectroscopy （FTIR）, and Raman microspectrometry. The results showed that the NHC and BC accounted for 25.6%-84.7 % and 4.14%-17.3%, respectively, of the total organic carbon （OC） with averages of 51.9% and 11.2% in the soils and sediments. For the less contaminated, low OC fiver and estuary sediments （WR and C08）, the OC and NHC concentrations increased with decreasing particle size.
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| 关 键 词： | 废水处理 地球化学 沉积物 溶解有机物 放射性碳 |
Quantification and characterization of condensed organic matter in sediments from the Pearl River Delta and Estuary, South China |
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| Yong RAN Ke SUN Baosahn XING Chende SUN.Quantification and characterization of condensed organic matter in sediments from the Pearl River Delta and Estuary, South China[J].Chinese Journal of Geochemistry,2006,25(B08):265-266. |
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| Abstract: | |
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| Keywords: | natural organic matter raiocarbon geochemical property sediment Pearl River |
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