Investigation of copper speciation in pig slurry by a multitechnique approach

Legros Samuel, Chaurand Perrine, Rose Jérôme, Masion Armand, Briois Valérie, Ferrasse Jean-Henry, Saint Macary Hervé, Bottero Jean Yves, Doelsch Emmanuel. 2010. Investigation of copper speciation in pig slurry by a multitechnique approach. Environmental Science and Technology, 44 (18) : 6926-6932.

Quartile : Outlier, Sujet : ENGINEERING, ENVIRONMENTAL / Quartile : Outlier, Sujet : ENVIRONMENTAL SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : It is now well-known that copper (Cu) can accumulate on the surface of soils upon which pig slurry has been applied. This is due to the high quantity of Cu in pig slurry resulting from its use as a growth promoter in animal feeds. The mobility and bioavailability of Cu from pig slurry spreading can be better predicted by determining the speciation of this element in addition to its total concentration. The aim of this study was to present a multitechnique approach to investigate Cu speciation in pig slurry.First,size fractionation and chemical characterization of each size fraction were performed to complement results obtained inraw samples. Micro X-ray fluorescence spectroscopy (?XRF) highlighted the colocalization of Cu and sulfur (S). Finally, X-ray absorption near-edge structure spectroscopy (XANES) showed that Cu speciation in raw pig slurry and size fractions could be described by Cu2S and that its oxidation state is Cu(I). In addition, geochemical calculation demonstrated that chalcocite (Cu2S) was the major Cu species present under pig slurry lagoon physical-chemical conditions. This Cu speciation in pig slurry may be the main reason for the observed Cu accumulation at the soil surface.

Mots-clés Agrovoc : porcin, lisier, cuivre, soufre

Mots-clés géographiques Agrovoc : France, La Réunion

Classification Agris : Q70 - Traitement des déchets agricoles
L01 - Élevage - Considérations générales

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Legros Samuel ORCID: 0000-0001-7081-6679
• Chaurand Perrine, Université Paul Cézanne (FRA)
• Rose Jérôme, CNRS (FRA)
• Masion Armand, CNRS (FRA)
• Briois Valérie
• Ferrasse Jean-Henry, Université Paul Cézanne (FRA)
• Saint Macary Hervé, CIRAD-PERSYST-UPR Recyclage et risque (FRA)
• Bottero Jean Yves, CNRS (FRA)
• Doelsch Emmanuel, CIRAD-PERSYST-UPR Recyclage et risque (FRA) ORCID: 0000-0002-7478-4296

Source : Cirad - Agritrop (https://agritrop.cirad.fr/556419/)

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