Improved approaches for modeling the sorption of phenanthrene by a range of plant species
文献类型：期刊论文
| 作者 | Zhu, Yanhong ; Zhang, Shuzhen ; Zhu, Yong-Guan ; Christie, Peter ; Shan, Xiaoquan |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2007-11-15 |
| 卷号 | 41期号:22页码:7818-7823 |
| 英文摘要 | Equilibrium sorption of phenanthrene and its relationship with plant lipid contents were investigated using roots and shoots of alfalfa, ryegrass, tomato, potato, carrot, cucumber, zucchini, and pumpkin. Lipid extractions using chloroform and hexane were compared, and the influence of dechlorophyllization on lipid determinations was evaluated. The sorption isotherms were close to linear (R-2 > 0.923, F < 0.05) and the plant-water partition coefficients (K-pl) of phenanthrene obtained from the isotherms exhibited significant and positive correlations with plant lipid contents (R-2 > 0.664,P < 0.05). The correlations were more significant (R-2 > 0.906, P < 0.001) when dechlorophyllization was included in the lipid extraction. The measured sorption was higher than that estimated using the octanol-water partition coefficient (K-ow) but was very close to the estimate using the triolein-water partition coefficient (Km). This study leads us to conclude that dechlorophyllization is necessary for plant lipid determination and that K-tw is more accurate as a substitute for the lipid-water partition coefficient (K-lip) than K-ow. These novel approaches may provide substantial improvements in the application of partition-limited models for the estimation of plant uptake of organic contaminants. |
| WOS记录号 | WOS:000250974700036 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22466]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhu, Yanhong,Zhang, Shuzhen,Zhu, Yong-Guan,et al. Improved approaches for modeling the sorption of phenanthrene by a range of plant species[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2007,41(22):7818-7823. |
| APA | Zhu, Yanhong,Zhang, Shuzhen,Zhu, Yong-Guan,Christie, Peter,&Shan, Xiaoquan.(2007).Improved approaches for modeling the sorption of phenanthrene by a range of plant species.ENVIRONMENTAL SCIENCE & TECHNOLOGY,41(22),7818-7823. |
| MLA | Zhu, Yanhong,et al."Improved approaches for modeling the sorption of phenanthrene by a range of plant species".ENVIRONMENTAL SCIENCE & TECHNOLOGY 41.22(2007):7818-7823. |
入库方式： OAI收割
来源：生态环境研究中心
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