Polychlorinated biphenyls in alfalfa: Accumulation, sorption and speciation in different plant parts

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Polychlorinated biphenyls in alfalfa: Accumulation, sorption and speciation in different plant parts
	Teng, Ying 1; Sun, Xianghui 1; Zhu, Lingjia 1; Christie, Peter 1; Luo, Yongming1,2
刊名	INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
	2017
卷号	19 期号:8 页码:732-738
关键词	polychlorinated biphenyls alfalfa accumulation speciation sorption
ISSN号	1522-6514
英文摘要	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.
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	POLYCYCLIC AROMATIC-HYDROCARBONS ; CONTAMINATED SOIL ; ABSORPTION ; ADSORPTION ; ROOTS ; WATER ; PCBS ; PHYTOREMEDIATION ; TRANSLOCATION ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000402041800006
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/22531]
专题	烟台海岸带研究所_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
推荐引用方式 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.