Plant uptake and in-soil degradation of PCB-5 under varying cropping conditions
Article
Article Title | Plant uptake and in-soil degradation of PCB-5 under varying cropping conditions |
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ERA Journal ID | 35098 |
Article Category | Article |
Authors | Li, Huashou (Author), Liu, Longyuan (Author), Lin, Chuxia (Author) and Wang, Shaorui (Author) |
Journal Title | Chemosphere |
Journal Citation | 84 (7), pp. 943-949 |
Number of Pages | 7 |
Year | 2011 |
Publisher | Elsevier |
Place of Publication | Oxford, United Kingdom |
ISSN | 0045-6535 |
1465-9972 | |
1879-1298 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.chemosphere.2011.06.007 |
Abstract | A 60-d greenhouse experiment was conducted to investigate the uptake and in-soil degradation of PCB-5 under single cropping and intercropping conditions involving three crop plant species: pumpkin, soybean and corn. Volatilization of PCB-5 from the soil surface was also tested. The results show that while uptake of PCB-5 by the test plant species is possible and the root concentration of PCB-5 had a control on the upward transport of PCB-5 to the above-ground portion of the plants, the PCB-5 extracted by the plants mainly accumulated in the root materials. Phytoextraction contributed insignificantly toward the loss of the soil-borne PCB-5. Volatilization of PCB-5 from the soil was recorded but it appeared that this did not result in a marked loss of PCB-5 in the bulk soil though it might cause remarkable removal of PCB-5 in a thin layer of the topsoil (1 mm). It is likely that the in-soil biodegradation contributed markedly to the observed reduction in soil-borne PCB-5. The in-soil biodegradation of PCB-5 was significantly enhanced under intercropping conditions, which appeared to be related to increased microbial activities, particularly bacterial activities. The soil residual PCB-5 was correlated with the activity of the following enzymes: catalase (CAT), polyphenol oxidase (PPO) and peroxidase (POD). |
Keywords | polychlorinated biphenyl; intercropping; biodegradation; phytoextraction; organic pollutant; soil; organic pollutants |
ANZSRC Field of Research 2020 | 410604. Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) |
410499. Environmental management not elsewhere classified | |
300409. Crop and pasture protection (incl. pests, diseases and weeds) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | South China Agricultural University, China |
Australian Centre for Sustainable Catchments | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q0w90/plant-uptake-and-in-soil-degradation-of-pcb-5-under-varying-cropping-conditions
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