| 京密引水中天然有机物的形态 |
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| 引用本文： | 刘文新,陶澍.京密引水中天然有机物的形态[J].环境化学,1994,13(4):296-301. |
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| 作者姓名： | 刘文新 陶澍 |
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| 作者单位： | 北京大学城市与环境学系!北京1000871 |
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| 摘 要： | 用改进的Ｌｅｅｎｈｅｅｒ分离方法，并引入最新的ＸＡＤ－８，ＸＡＤ－４树脂串联技术，将京密引水中有机物定量分离为悬浮和溶解态两大类。后者又进一步分离为憎水有机物、腐殖酸类，ＸＡＤ－４酸和亲水中性有机物等形成。溶解态有机物含量约为３ｍｇＣ／ｌ，其中一半左右为腐殖酸类。ＸＡＤ－４酸占溶解态有机１５－２０％，非极性憎水有机物所占比例很低。
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| 关 键 词： | 河水 XAD树脂 腐殖酸 形态 |
FRACTIONATION OF TOC IN WATER FROM J1NGMI CANAL, BEIJING |
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| Lai Heixin Tao Shu.FRACTIONATION OF TOC IN WATER FROM J1NGMI CANAL, BEIJING[J].Environmental Chemistry,1994,13(4):296-301. |
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| Authors: | Lai Heixin Tao Shu |
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| Abstract: | Natural occurred organic compounds in water from Jingmi Canal were fractionated into several fractions of suspended solids, hydrophobic compounds, humic substances, XAD- 4 acids and dissolved hydrophilic neutrals by filtration, adsorption on XAD-8 resin at different pH values and adsorption on XAD-4 resin in tandem. The total amount of DOC was found to be 3 mgC/1 or so, more than half of which was humic substances. The XAD-4 acids accounted for about 15 to 20 percent of DOC, meanwhile the hydrophobic solutes possessed only 3. 3 percent. |
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| Keywords: | XAD resin TOC DOC humic substances XAD-4 acids fractionation |
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