Polychlorinated biphenyls in alfalfa: Accumulation, sorption and speciation in different plant parts
Teng, Ying1; Sun, Xianghui1; Zhu, Lingjia1; Christie, Peter1; Luo, Yongming1,2
2017
发表期刊INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
ISSN1522-6514
卷号19期号:8页码:732-738
摘要The accumulation, chemical speciation and distribution of polychlorinated biphenyls (PCBs) were investigated in various parts of alfalfa. Moreover, the adsorption characteristics for PCB 28 by alfalfa and the influencing factors of the adsorption characteristics were studied. There were different degrees of PCB accumulation in alfalfa roots, root nodules and shoots. The decreasing order of the accumulation of PCBs in plant tissues was root nodules > roots > shoots, and the decreasing order of the total PCB contents was roots > shoots > root nodules, indicating that the roots were the main sink for PCB accumulation. There were three modes of PCB speciation in alfalfa roots and root nodules, comprising strong sorption (78%) and weak sorption (19%) on tissue surfaces and absorption within tissues (2%). The adsorption isotherms of PCB 28 indicate that the adsorption capacities of root nodules and shoots were both significantly higher than that of the roots. Both lipids and carbohydrates, and especially lipids, affected the PCB adsorption capacities of the tissues. These results may help in the elucidation of the mechanisms of sorption and accumulation of PCBs in the plants and their main influencing factors and thus contribute to the development of phytoremediation technologies for PCB-contaminated soils.
关键词Polychlorinated Biphenyls Alfalfa Accumulation Speciation Sorption
DOI10.1080/15226514.2017.1284749
项目资助者National Natural Science Foundation of China(41371309 ; K.C. Wong Education Foundation of Hong Kong ; 41230858)
收录类别SCI
关键词[WOS]POLYCYCLIC AROMATIC-HYDROCARBONS ; CONTAMINATED SOIL ; ABSORPTION ; ADSORPTION ; ROOTS ; WATER ; PCBS ; PHYTOREMEDIATION ; TRANSLOCATION ; MODEL
文章类型Article
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS记录号WOS:000402041800006
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/22531
专题中科院海岸带环境过程与生态修复重点实验室
作者单位1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
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GB/T 7714
Teng, Ying,Sun, Xianghui,Zhu, Lingjia,et al. Polychlorinated biphenyls in alfalfa: Accumulation, sorption and speciation in different plant parts[J]. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION,2017,19(8):732-738.
APA Teng, Ying,Sun, Xianghui,Zhu, Lingjia,Christie, Peter,&Luo, Yongming.(2017).Polychlorinated biphenyls in alfalfa: Accumulation, sorption and speciation in different plant parts.INTERNATIONAL JOURNAL OF PHYTOREMEDIATION,19(8),732-738.
MLA Teng, Ying,et al."Polychlorinated biphenyls in alfalfa: Accumulation, sorption and speciation in different plant parts".INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 19.8(2017):732-738.
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