Metal accumulation in wild plants surrounding mining wastes

被引:170
作者
Gonzalez, R. Carrillo
Gonzalez-Chavez, M. C. A.
机构
[1] Colegio Postgrad, IRENAT, Mexico City 56230, DF, Mexico
[2] Colegio Postgrad, IRENAT, Mexico City 56230, DF, Mexico
关键词
hyperaccumulator; excluder; trace element; Polygonum aviculare; Jatropha dioica;
D O I
10.1016/j.envpol.2006.01.006
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Four sites were selected for collection of plants growing on polluted soil developed on tailings from Ag, An, and Zn mines at the Zacatecas state in Mexico. Trace element concentrations varied between sites, the most polluted area was at El Bote mine near to Zacatecas city. The ranges of total concentration in soil were as follows: Cd 11-47, Ni 19-26, Ph 232-695, Mn 1132-2400, Cu 134-186 and Zn 116-827 mg kg(-1) air-dried soil weight. All soil samples had concentrations above typical values for non-polluted soils from the same soil types (Cd 0.6 +/- 0.3, Ni 52 +/- 4, Ph 41 +/- 3 mg kg(-1)). However, for the majority of samples the DTPA-extractable element concentrations were less than 10% of the total. Some of the wild plants are potentially metal tolerant, because they were able to grow in highly polluted substrates. Plant metal analysis revealed that most species did not translocate metals to their aerial parts, therefore they behave as excluder plants. Polygonum aviculare accumulated Zn (9236 mg kg(-1)) at concentrations near to the criteria for hyperaccumulator plants. Jatropha dioica also accumulated high Zn (6249 mg kg(-1)) concentrations. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:84 / 92
页数:9
相关论文
共 39 条
[1]  
ALLOWAY BJ, 1995, HEAVY METALS
[2]  
ANGLE J, 2001, RISK ASS INTRO NATIV
[3]  
[Anonymous], 1998, MUNSELL SOIL COLOR C
[4]   Arsenic content in hair of people exposed to natural arsenic polluted groundwater at Zimapan, Mexico [J].
Armienta, MA ;
Rodriguez, R ;
Cruz, O .
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 1997, 59 (04) :583-589
[5]  
Armienta MA., 2003, Geo. Int, V42, P131, DOI [DOI 10.22201/IGEOF.00167169P.2003.42.1.366, 10.22201/igeof.00167169p.2003.42.1.366]
[6]  
AYALA RF, 1999, REV MUNDO MINERO, P12
[7]  
BAKER A J M, 1989, Biorecovery, V1, P81
[9]  
BROOKS RR, 2000, PLANTS HYPERACCUMULA, P380
[10]  
*BS, 1995, CHEM METHODS 3, P1