Formentini, Thiago
- Institutionen för mark och miljö, Sveriges lantbruksuniversitet
- Universidade Federal de Santa Maria (UFSM)
Sammanfattning
Zinc (Zn) occurs naturally in soils, but spreading Zn-rich livestock manure on agricultural soils may lead to hazardous Zn levels. Interactions between exogenous Zn (from animal manure) and the soil matrix must be assessed to predict its behavior. We conducted soil density fractionation using sodium polytungstate solutions (LST) to isolate and identify the soil constituents and investigated their associations with Zn within five density fractions by characterizing the total organic carbon (TOC), mineralogy and Zn speciation. We analyzed a clayey Hapludox soil from a field experiment that had received pig slurry applications over an 11-year period, causing a 2-fold increase in the Zn concentration within the 0-5 cm layer relative to the control soil. Two density fractions with contrasting compositions were found: (i) a light fraction (
Nyckelord
Heavy metal; Soil contamination; Agricultural recycling; Pig slurry
Publicerad i
Geoderma
2021, volym: 394, artikelnummer: 115044
Utgivare: ELSEVIER
SLU författare
Globala målen (SDG)
SDG12 Hållbar konsumtion och produktion
UKÄ forskningsämne
Markvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1016/j.geoderma.2021.115044
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/111984