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Published online 28 June 2005
Published in Soil Sci Soc Am J 69:1314-1319 (2005)
DOI: 10.2136/sssaj2004.0397
© 2005 Soil Science Society of America
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Weathering of Pyrite and Sphalerite in Soils Contaminated with Pyritic Sludge

Raúl Hita and José Torrent*

Departamento de Ciencias y Recursos Agrícolas y Forestales, Universidad de Córdoba, Edificio C4, Campus de Rabanales, 14071 Córdoba, Spain



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  		Fig. 1. Relationship between the estimated initial contents of pyrite and sphalerite in all soil samples.

 


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  		Fig. 2. Relationship between the increase in CBD-extractable Fe ({Delta}Fed) ascribed to pyrite weathering and the increase in total Fe ({Delta}Fet) ascribed to contamination with pyrite in the soil samples collected in November 2000 and June 2001.

 


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  		Fig. 3. Relationship between the increase in acid oxalate-extractable Fe ({Delta}Feo) ascribed to pyrite weathering and the increase in total Fe ({Delta}Fet) ascribed to contamination with pyrite in the soil samples collected in November 2000 and June 2001.

 


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  		Fig. 4. Relationship between acid oxalate-extractable Zn (Zno) and total Zn (Znt) in the soil samples collected in November 2000 and June 2001.

 


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  		Fig. 5. Relationship between the amount of Zn released from sphalerite [calculated as (Znd – Zncb + Znc)] and total Zn (Znt) in the soils collected in November 2000 and June 2001.

 




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