[Soil contamination and assessment of heavy metals of Xiangjiang River Basin].
Huan Jing Ke Xue
; 33(1): 260-5, 2012 Jan.
Article
em Zh
| MEDLINE
| ID: mdl-22452220
ABSTRACT
The contents of heavy metals (As, Cd, Cu, Zn, Ni and Pb) in soils from Xiangjiang River Basin, Hunan Province, China, were analyzed by toxicity characteristic leaching procedure (TCLP) and Nemrow method. Results showed that the total contents of As, Cd, Cu, Zn, Ni and Pb were 4.25-549.67, 0.13-76.84, 11.49-281.69, 7.75-7234.81, 5.50-56.65 and 8.60-2084.81 mg x kg(-1), respectively, and the available contents of As, Cd, Cu, Zn, Ni and Pb extracted by TCLP were 0.02-10.97, 0.06-28.41, 0.04-72.29, 0.59-1 152.32, 0.07-10. 65 and 0.17-1 165.58 mg x kg(-1). The contents of available heavy metals extracted by TCLP correlated with total contents of heavy metals. Moreover, the pollution index Nemrow method showed that 72 samples at safety level, alert level, light pollution level, medium pollution level and heavy pollution level ratios were 60.52%, 11.33%, 5.65%, 4.22% and 18.38% separately, illustrating that pollution of heavy metals in soil samples of Xiangjiang River Basin is serious.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Solo
/
Poluentes do Solo
/
Metais Pesados
Tipo de estudo:
Etiology_studies
País como assunto:
Asia
Idioma:
Zh
Ano de publicação:
2012
Tipo de documento:
Article