QQ客服 官方微博 反馈留言

	Bioavailability of pentachlorophenol to earthworms (Eisenia fetida) in artificially contaminated soils
	Hu, XY; Wen, B; Shan, XQ; Zhang, SZ
	2005
会议名称	2nd International Conference on Environmental Concerns
会议日期	OCT 12-15, 2004
会议地点	Xiamen, PEOPLES R CHINA
关键词	bioavailability pentachlorophenol earthworms soil aging effect mild extraction
英文摘要	The bioaccumulation of pentachlorophenol in earthworms (Eisenia fetida) was studied for two artificially contaminated soils (S1 and S2). The uptake kinetics of pentachlorophenol (PCP) in earthworms increased quickly within the initial 10 days. This was followed by a nearly steady state for the next 20 days that fit with the equilibrium partitioning model. The correlation coefficients were 0.812 and 0.715 for S1 and S2, respectively. The average biota-to-soil accumulation factor of PCP in S1 was 0.51 +/- 0.09, whereas that of S2 was 0.79 +/- 0.12. There was a significant correlation between log C-soil and log C-worm emonstrating the validity of the equilibrium partitioning model. The bioavailability of PCP was assessed by chemical extraction methods. The results demonstrated. a close correlation between extractable amounts of PCP freshly added in soils and those in earthworms. With increasing residence time of PCP in soil, there was a progressively smaller amount of PCP assimilated by the earthworms. In contrast, the amount extracted by Soxhlet extraction did not show a similar decline. However, the extractable amount of PCP by methanol and methanol-water (1:1) significantly decreased over 440 days. Compared with the methanol-water (1:1) extraction method, the methanol extraction method was preferred to the prediction of the bioavailability of PCP in aged soils.
ISSN号	1093-4529
内容类型	会议论文
源URL	[http://ir.rcees.ac.cn/handle/311016/24767]
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	Hu, XY,Wen, B,Shan, XQ,et al. Bioavailability of pentachlorophenol to earthworms (Eisenia fetida) in artificially contaminated soils[C]. 见:2nd International Conference on Environmental Concerns. Xiamen, PEOPLES R CHINA. OCT 12-15, 2004.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。