| 2种脂类物质对多氯联苯的吸附特性研究 |
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| 引用本文： | 孙向辉,滕应,骆永明,涂晨,李振高.2种脂类物质对多氯联苯的吸附特性研究[J].环境科学,2010,31(10):2327-2330. |
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| 作者姓名： | 孙向辉 滕应 骆永明 涂晨 李振高 |
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| 作者单位： | 1. 中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京210008;中国科学院研究生院,北京100049
2. 中国科学院土壤环境与污染修复重点实验室(南京土壤研究所),南京,210008 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目（KZCX2-YW-404, CXTD-Z2005-4）；国家自然科学基金项目（40921061, 40701080） |
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| 摘 要： | 研究了2种脂类物质卵磷脂(PC)和甘油三酯(TG)对PCB28的吸附特性.结果表明,2种脂类物质均可以在8h内达到对PCB28的吸附平衡,吸附量大,且PC高于TG.在PCB28初始浓度为50～250μg·L-1,随着PCB28初始浓度的增加,PC和TG对PCB28的绝对吸附量和相对吸附量均不断增加,其对PCB28的等温吸附均可以用Linear吸附方程较好表征,计算得到PC和TG对PCB28吸附的Kd值分别为38.84L·g-1和20.14L·g-1,PC对PCB28具有更强的吸附能力,脂肪酸碳链长度可能是影响脂类物质吸附机制的主要原因.
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| 关 键 词： | 卵磷脂 甘油三酯 PCB28 吸附 |
| 收稿时间： | 2009/12/15 0:00:00 |
| 修稿时间： | 2010/3/23 0:00:00 |
Sorption Behavior of PCB28 to Phosphatidylcholine and Triglyceride |
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| SUN Xiang-hui,TENG Ying,LUO Yong-ming,TU Chen and LI Zhen-gao.Sorption Behavior of PCB28 to Phosphatidylcholine and Triglyceride[J].Chinese Journal of Environmental Science,2010,31(10):2327-2330. |
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| Authors: | SUN Xiang-hui TENG Ying LUO Yong-ming TU Chen and LI Zhen-gao |
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| Institution: | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. xhsun@issas.ac.cn |
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| Abstract: | Sorption behaviors of PCB28 to phosphatidylcholine (PC)and triglyceride (TG) were studied. Results showed that sorption equilibrium could be achieved in 8 h for PCB28, and the sorption amount on PC was higher than that of TG when the initial PCB28 concentration is in the range of 50-250 microg x L(-1). As the initial PCB28 concentration increases, the absolute sorption amount and relative sorption amount on PC and TG enhances. And linear isotherm is suggested as the most appropriated fitting type, sorption constants K(d) calculated from linear isotherm for PC and TG are 38.84 L x g(-1) and 20.14 L x g(-1) respectively, which suggested that PC had a higher sorption ability to PCB28 than that of TG, and the fatty acid chain length might be important factors to influence the sorption mechanism of PC and TG. |
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