Use of Co speciation and soil properties to explain variation in Co toxicity to root growth of barley (Hordeum vulgare L.) in different soils

被引：52

作者：

Mico, C. ^{[1
]}

Li, H. F. ^{[1
]}

Zhao, F. J. ^{[1
]}

McGrath, S. P. ^{[1
]}

机构：

[1] Rothamsted Res, Ctr Soils & Ecosyst Funct, Dept Soil Sci, Harpenden ALS 2JQ, Herts, England

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 156卷 / 03期

基金：

英国生物技术与生命科学研究理事会;

关键词：

Cobalt; Soil properties; Plant toxicity; Barley; Bioavailability; Risk assessment;

D O I：

10.1016/j.envpol.2008.05.017

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 [工学]; 0830 [环境科学与工程];

摘要：

The influence of soil properties on the bioavailability and toxicity of Co to barley (Hordeum vulgare L) root elongation was investigated. Ten soils varying widely in soil properties were amended with seven doses Of CoCl2. Soil properties greatly influenced the expression of Co toxicity. The effective concentration of added Co causing 50% inhibition (EC50) ranged from 45 to 863 mg kg(-1), representing almost 20-fold variation among soils. Furthermore, we investigated Co toxicity in relation to Co concentrations and free Co2+ activity in soil solution. The EC50 values showed variation among soils of 17- and 29-fold, based on the Co concentration in soil solution and free CO2+ activity, respectively. Single regressions were carried out between Co toxicity threshold values and selected soil properties. Models obtained showed that soil effective cation exchange capacity (eCEC) and exchangeable calcium were the most consistent single predictors of the EC50 values based on soil added Co. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：883 / 890

页数：8

共 40 条

[1]

ION ANTAGONISMS IN MICROORGANISMS - INTERFERENCE OF NORMAL MAGNESIUM METABOLISM BY NICKEL, COBALT, CADMIUM, ZINC, AND MANGANESE [J].

ABELSON, PH ;

ALDOUS, E .

JOURNAL OF BACTERIOLOGY, 1950, 60 (04) :401-413

[2]

Adriano D., 2001, TRACE ELEMENTS TERRE

[3]

Concentration and distribution of cobalt in higher plants: The use of micro-PIXE spectroscopy [J].

Bakkaus, E ;

Gouget, B ;

Gallien, JP ;

Khodja, H ;

Carrot, F ;

Morel, JL ;

Collins, R .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2005, 231 :350-356

[4]

Phytotoxicity of cobalt, chromium and copper in cauliflower [J].

Chatterjee, J ;

Chatterjee, C .

ENVIRONMENTAL POLLUTION, 2000, 109 (01) :69-74

[5]

Chhabra R., 1975, P INT CLAY C, P439

[6]

ZINC AND COBALT BIOCONCENTRATION AND TOXICITY IN SELECTED ALGAL SPECIES [J].

COLEMAN, RD ;

COLEMAN, RL ;

RICE, EL .

BOTANICAL GAZETTE, 1971, 132 (02) :102-&

[7]

CRITICAL LEVELS OF 20 POTENTIALLY TOXIC ELEMENTS IN YOUNG SPRING BARLEY [J].

DAVIS, RD ;

BECKETT, PHT ;

WOLLAN, E .

PLANT AND SOIL, 1978, 49 (02) :395-408

[8]

Day P.R., 1965, METHODS SOIL ANAL 1, P562, DOI DOI 10.2134/AGRONMONOGR9.1.C43

[9]

EC European Commission, 2003, Technical Guidance Document on Risk Assessment in Support of Commission Directive 93/67/EEC on Risk Assessment for New Notified Substances/Commission Regulation (EC) No 1488/94 on Risk Assessment for Existing Substances/Directive 98/8/EC of the European Parliament and of the Council Concerning the Placing of Biocidal Products on the Market (Printed in Italy)

[10]

GADD GM, 1978, MICROBIAL ECOL, V4, P303, DOI 10.1007/BF02013274

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