AI Article Synopsis
- PFOA is a persistent pollutant that's being studied for its toxic effects on earthworms (Eisenia fetida) in artificial soil.
- The study measured the activities of several enzymes and malondialdehyde (MDA) levels after exposing earthworms to varying concentrations of PFOA over different time periods.
- Results indicated that enzyme activities fluctuated with time, showing significant biochemical effects of PFOA on earthworms and highlighting its ecological toxicity to soil invertebrates.
Article Abstract
Perfluorooctanoic acid (PFOA) is considered a persistent environmental pollutant. The aim of this study was to assess the potential toxicity of PFOA to earthworms (Eisenia fetida) in artificial soil. The activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and glutathione S-transferase (GST) as well as the contents of malondialdehyde (MDA) were measured after exposure to 0, 5, 10, 20, and 40 mg kg PFOA in soils for 7, 14, 21, and 28 days. The results showed that SOD activity increased at 14 days and decreased from 21 to 28 days; MDA levels were highest in the treatment with 40 mg kg PFOA after 28 days of exposure. In contrast, CAT and POD activities increased after 14-21 days of exposure and significantly decreased with long-term exposure (28 days). GST activity increased significantly from 14 to 28 days. Our results indicate that PFOA has biochemical effects on E. fetida, thereby contributing to our understanding of the ecological toxicity of PFOA on soil invertebrates.
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| http://dx.doi.org/10.1007/s11356-017-9776-9 | DOI Listing |
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