File Entry: Especiación de metales en sedimentos del río Cuchivero, Venezuela

Created: 2016-11-25 14:51:19
Information Version 1 (of 1)

Version created on: 2016-11-25 14:51:19


Information Description


The total concentration and the chemical forms of heavy metals were determined in
superficial sediments of the Cuchivero river, Venezuela, using sequential extraction and
atomic absorption spectrophotometry with flame. Pollution indices were used to study the
distribution, pollution and environmental risk in the sediments. Total values ranged from,
394-457 mgkg-1 Fe, 46,87-74,82 Mn, 6,45-11,92 Zn, 1,70-5,75 Ni, 0,39-3,7 Cu, 1,25-3,63
Cr, 0,37-1,82 Co, 0,10-0,30 Cd y <Ld-0,20 mgkg-1 Pb. The metals were found to be
strongly associated with the residual fraction minerals (70 to 90%), carbonates and iron
oxihidroxides. Manganese and cadmium were associated mostly exchangeable fraction
(60-70%). The indices indicate that the source of metals is mainly bedrock; no metal
enrichment and contamination exist. The risk of environmental disruption is low for Fe
and Co, high for Zn and Ni, medium for Cu and Cr, and very high for Mn, Cd and Pb
 


Information Download

Information Uploader

Information License

All versions of this File are licensed under:

Information Credits (0)

(People/Groups)

None

Information Attributions (0)

(Workflows/Files)

None

Information Tags (8)

Log in to add Tags

Information Shared with Groups (1)

Information Featured In Packs (0)

None

Log in to add to one of your Packs

Information Attributed By (0)

(Workflows/Files)

None

Information Favourited By (0)

No one

Information Statistics

 

Version History

In chronological order:



Comments Comments (0)

No comments yet

Log in to make a comment


What is this?

Linked Data

Non-Information Resource URI: https://www.myexperiment.org/files/1885


Alternative Formats

HTML
RDF
XML