Mobility and fractionation of copper in sandy soils
| Autor: | Yuncong Li, Qian Sun, Ashok K. Alva, Tiantian Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
lcsh:GE1-350
Chemical Health and Safety Chemistry Health Toxicology and Mutagenesis media_common.quotation_subject copper fungicide chemistry.chemical_element Sequential fractionation Fractionation sequential fractionation Toxicology Copper column leaching Speciation speciation lcsh:Environmental pollution pore volumes Environmental chemistry lcsh:TD172-193.5 Soil water lcsh:Environmental sciences media_common |
| Zdroj: | Environmental Pollutants & Bioavailability, Vol 31, Iss 1, Pp 18-23 (2019) |
| ISSN: | 2639-5940 2639-5932 |
| DOI: | 10.1080/09542299.2018.1558114 |
| Popis: | The transport and fractionation of copper (Cu) were investigated in three soils which were under continuous citrus production for over 30 years. The above soils received 50 kg Cu ha−1, and were leached with eight pore volumes of water (equivalent to a total of 91 cm of rainfall). Following the completion of leaching, the leaching columns were sectioned into 5 cm depth increments for analyses of soil Cu. Concentrations of different forms of soil Cu were analyzed using a sequential fractionation procedure. The leaching column study indicated as much as 98% of the applied Cu remained in the upper 5 cm of the soil despite leaching eight pore volumes of water. Copper recovered in eight pore volumes of leachate accounted for 0.18–2.87% of Cu applied. The organically bound and precipitated forms of Cu accounted for 33–87% and 6–44% of total soil Cu, respectively. |
| Databáze: | OpenAIRE |
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