Toxicity Assessment of Sediments with Natural Anomalous Concentrations in Heavy Metals by the Use of Bioassay

International Journal of Chemical Engineering - Tập 2010 - Trang 1-6 - 2010
F. Martı́n1, Marlon Escoto2, Juan Fernández1, Emilia Fernández Ondoño1, Elena Arco-Lázaro1, Manuel Sierra Aragón1, Carlos Dorronsoro1
1Departamento de Edafología y Química Agrícola, Universidad de Granada, Campus Fuentenueva s/n, 18071 Granada, Spain
2Departamento de Manejo de Recursos Naturales y Ambiente, Universidad Nacional de Agricultura, P.C. 9, Catacamas, Olancho, Honduras

Tóm tắt

The potential toxicity in riverbed sediments was assessed with a bioassay using the bioluminescent bacteriaVibrio fischeri. The selected area was characterized by the presence of ultramafic rocks (peridotites), and the sediments had high values in Ni, Cr, and Co. For the toxicity bioassay withVibrio fischeri, water-soluble forms were used. The results indicated that most of the samples had a very low degree of toxicity, with 10% of reduction in luminescence in relation to the control; meanwhile 25% of the samples had a moderate degree of toxicity with a reduction in luminescence between 13 and 21% in relation to the control. The toxicity index correlated significantly with the concentrations of Ni and Cr in the water extracts. This toxicity bioassay was proved to be a sensitive and useful tool to detect potential toxicity in solutions, even with anomalous concentrations in heavy metals of natural origin.

Từ khóa


Tài liệu tham khảo

10.1007/0-387-32883-1_3

1992, Canadian Journal of Soil Science, 72, 359, 10.4141/cjss92-032

2000

10.1016/j.scitotenv.2008.07.018

10.1080/10937400802545292

10.1065/jss2005.05.135

10.1016/S0165-9936(03)00504-1

10.1016/j.aca.2007.12.008

10.1016/j.envint.2005.08.022

2008, Soil contamination: from large to small scale

10.1016/j.jhazmat.2008.04.061

10.1016/j.watres.2003.10.042

1995, Biogeodynamics of pollutants in soils and sediments: risk assessment of delayed and non-linear responses

1980, Environmental Technology Letters, 1, 506, 10.1080/09593338009384007

10.1016/S0160-4120(02)00033-8

10.1016/j.jhydrol.2005.01.021

10.1016/j.watres.2005.07.011

10.1016/j.scitotenv.2005.12.027

10.1016/j.scitotenv.2004.03.038

1962, Journal of Agricultural and Food Chemistry, 10, 174, 10.1021/jf60121a004

1982, Soil Science Society of America Journal, 46, 260, 10.2136/sssaj1982.03615995004600020009x

1999, Criterios y estándares para declarar un suelo como contaminado en Andalucía

10.1016/j.chemosphere.2003.09.010

1985

Thông tin
Thông tin xuất bản

International Journal of Chemical Engineering

Tập 2010

1-6

Thông tin tác giả