Abstract:
:This work evaluates current metal concentrations (Cd, Cu, Pb and Zn) and the operational bio-available chemical extraction fraction in surface sediments in Mazatlán Harbor in Northwest México. Sediment samples were also analyzed for organic carbon, carbonates and particle size. Ranges of bulk metal were as follows: Cd from 3.1 to 3.3 microg/g, Cu from 31.9 to 44.9 microg/g, Pb from 49.6 to 54.0 microg/g, and Zn from 217.8 to 323.5 microg/g. In terms of biological effects, metals concentrations in the sediments lie between the low and median ranges of the mean quality guideline criteria. Comparatively, the metals concentrations increased from 1983 to 1994 and then for 2006, except Pb and Cd that decreased in the last period of time. The bio-available fraction of metals increased from 1983 to 1994, but only bio-available Cu increased from 1994 to 2006, due to mobilization of this metal from the organic matter-sulfide phase.
journal_name
Bull Environ Contam Toxicoljournal_title
Bulletin of environmental contamination and toxicologyauthors
Jara-Marini ME,Soto-Jiménez MF,Páez-Osuna Fdoi
10.1007/s00128-007-9334-0subject
Has Abstractpub_date
2008-02-01 00:00:00pages
150-3issue
2eissn
0007-4861issn
1432-0800journal_volume
80pub_type
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