COPPER TOXICITY THRESHOLDS IN CHINESE SOILS BASED ON SUBSTRATE-INDUCED NITRIFICATION ASSAY

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	COPPER TOXICITY THRESHOLDS IN CHINESE SOILS BASED ON SUBSTRATE-INDUCED NITRIFICATION ASSAY
	Li, Xiao-Fang; Sun, Jin-Wei; Huang, Yi-Zong; Ma, Yi-Bing; Zhu, Yong-Guan
刊名	ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
	2010-02
卷号	29 期号:2 页码:294-300
关键词	Copper Toxicity Threshold Chinese Soil Nitrification Assay
英文摘要	Copper toxicity in 17 Chinese soils was screened using a substrate-induced nitrification assay to generate information for the development of a terrestrial biotic ligand model (tBLM). The leaching effect on the Cu toxicity thresholds was investigated. Both the total Cu-based median effective concentration (EC50) values (46.9-2726 mg/kg) and the solution Cu-based EC50 values (0.04-2.91 mg/L) in unleached soils varied substantially among the soils in the present study. For unleached soils, linear stepwise multiple regression analysis showed that total Ca and soil pH were the best predictors for total Cu-based EC50, while electrical conductivity (EC) and soil pH were the best predictors for solution Cu-based EC50. The variation in solution Cu-based EC50 was largely (R(2) = 0.75) explained by Mg but not Ca and H(+) concentration in soil solution at EC50, suggesting a protective effect of Mg(2+) against Cu toxicity in the test soils. Leaching impacted Cu toxicity differently among the soils and apparently reduced the variations of both the total Cu-based and the solution Cu-based EC50. The predictability of the Cu EC50 by empirical models was decreased after leaching. The leaching effect on Cu toxicity, indicated by a leaching factor, was not predicted by any soil properties. There is a need to investigate quantitatively the mechanisms for the leaching effect on Cu toxicity in soils. Environ. Toxicol. Chem. 2010;29:294-300. (C) 2009 SETAC
WOS记录号	WOS:000274272500008
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21328]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Li, Xiao-Fang,Sun, Jin-Wei,Huang, Yi-Zong,et al. COPPER TOXICITY THRESHOLDS IN CHINESE SOILS BASED ON SUBSTRATE-INDUCED NITRIFICATION ASSAY[J]. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,2010,29(2):294-300.
APA	Li, Xiao-Fang,Sun, Jin-Wei,Huang, Yi-Zong,Ma, Yi-Bing,&Zhu, Yong-Guan.(2010).COPPER TOXICITY THRESHOLDS IN CHINESE SOILS BASED ON SUBSTRATE-INDUCED NITRIFICATION ASSAY.ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,29(2),294-300.
MLA	Li, Xiao-Fang,et al."COPPER TOXICITY THRESHOLDS IN CHINESE SOILS BASED ON SUBSTRATE-INDUCED NITRIFICATION ASSAY".ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 29.2(2010):294-300.