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| Characteristics of dissolved organic matter （DOM） in leachate with different landfill ages | |
| 作者姓名： | HUO Shouliang XI Beidou YU Haichan HE Liansheng FAN Shilei LIU Hongliang |
| 作者单位： | HUO Shouliang（Environment School, Beijing Normal University, Beijing 100875, China;Chinese Research Academy of Environmental Sciences, Beijing 100012, China） ; XI Beidou（Chinese Research Academy of Environmental Sciences, Beijing 100012, China） ; YU Haichan（College of Life Sciences, Beijing Normal University, Beijing 100875, China） ; HE Liansheng（Chinese Research Academy of Environmental Sciences, Beijing 100012, China） ; FAN Shilei（The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China） ; LIU Hongliang（Chinese Research Academy of Environmental Sciences, Beijing 100012, China） ; |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| 摘 要： | The main objective of the study was to investigate the characteristics of dissolved organic matter (DOM) in leachate with different landfill ages through the chemical, spectroscopic, and elemental analysis. Humic acid (HA), fulvic acid (FA), and hydrophilic (HyI) fractions were isolated and purified by the XAD-8 resin combined with the cation exchange resin method. The analytical results of fluorescence excitation-emission matrix spectroscopy (EEMs) revealed that the fluorescence peaks were protein-like fluorescence for young landfill leachate, while the fluorescence peaks for medium and old landfill leachate were humic-like and fulvic-like fluorescence, respectively. Elemental analysis showed that carbon, hydrogen, and nitrogen content decreased with landfill age, while the oxygen content increased. Moreover, the nitrogen content in these isolated fractions followed HA ＞ HyI ＞ FA. The results of elemental analysis, FT-IR, and fluorescence EEMs also confirmed that aromatic carbons and portions of aliphatic functional groups were more abundant in leachate samples with increasing landfill age. |
| 关 键 词： | 有机物质 垃圾 实验研究 污染物 |
| 收稿时间： | 4 June 2007 |
| 修稿时间： | 17 August 2007 |
Characteristics of dissolved organic matter (DOM) in leachate with different landfill ages |
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| HUO Shouliang,XI Beidou,YU Haichan,HE Liansheng,FAN Shilei,LIU Hongliang.Characteristics of dissolved organic matter (DOM) in leachate with different landfill ages[J].Journal of Environmental Sciences,2008,20(4):492-498. | |
| Authors: | HUO Shouliang XI Beidou YU Haichan HE Liansheng FAN Shilei and LIU Hongliang |
| Institution: | 1. Environment School, Beijing Normal University, Beijing 100875, China;Chinese Research Academy of Environmental Sciences, Beijing 100012, China 2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China 3. College of Life Sciences, Beijing Normal University, Beijing 100875, China 4. The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China |
| Abstract: | The main objective of the study was to investigate the characteristics of dissolved organic matter (DOM) in leachate with different landfill ages through the chemical, spectroscopic, and elemental analysis. Humic acid (HA), fulvic acid (FA), and hydrophilic (HyI) fractions were isolated and purified by the XAD-8 resin combined with the cation exchange resin method. The analytical results of fluorescence excitation-emission matrix spectroscopy (EEMs) revealed that the fluorescence peaks were protein-like fluorescence for young landfill leachate, while the fluorescence peaks for medium and old landfill leachate were humic-like and fulvic-like fluorescence, respectively. Elemental analysis showed that carbon, hydrogen, and nitrogen content decreased with landfill age, while the oxygen content increased. Moreover, the nitrogen content in these isolated fractions followed: HA ＞ HyI ＞ FA. The results of elemental analysis, FT-IR, and fluorescence EEMs also confirmed that aromatic carbons and portions of aliphatic functional groups were more abundant in leachate samples with increasing landfill age. |
| Keywords: | dissolved organic matter (DOM) fluorescence EEMs DOM fractionation landfill leachate |
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