Abstract：
:An in vitro method that simulated the physiological conditions of the digestive process was applied to samples taken from an old mining site, providing information on the levels of metals (Cd, Pb and As) that can be ingested and assimilated by humans. Samples were first characterized by determining pH, texture, mineralogical composition and total metal contents. The mean pH value was 5.4, ranging from 3.1 to 8.4. The mean total metal content for Pb was 2,632+/-59 mg kg(-1), 65+/-1.5 mg kg(-1) for Cd and 279.9+/-9.9 mg kg(-1) for As. Cadmium was the most bioavailable metal both in the stomach and intestinal phases (mean value of 47% and 27.8%, respectively), followed by lead (25.3% and 11.5%) and arsenic (4.9% and 0.5%). A Pearson correlation matrix suggested that pH and mineralogical composition were important factors controlling metal bioavailability from materials in abandoned mining sites.
journal_name
Chemospherejournal_title
Chemosphereauthors
Navarro MC,Pérez-Sirvent C,Martínez-Sánchez MJ,Vidal J,Marimón Jdoi
10.1016/j.chemosphere.2005.08.017subject
Has Abstractpub_date
2006-04-01 00:00:00pages
484-9issue
3eissn
0045-6535issn
1879-1298pii
S0045-6535(05)01016-7journal_volume
63pub_type
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