Plant uptake and soil fractionation of five ether-PFAS in plant-soil systems
Zhang, W; Cao, H; Liang, Y
| HERO ID | 9952516 |
|---|---|
| In Press | No |
| Year | 2021 |
| Title | Plant uptake and soil fractionation of five ether-PFAS in plant-soil systems |
| Authors | Zhang, W; Cao, H; Liang, Y |
| Journal | Science of the Total Environment |
| Volume | 771 |
| Page Numbers | 144805 |
| Abstract | Considering the grave concerns caused by conventional per- and polyfluorinated substances (PFAS), production and use of fluoroalkylether compounds (ether-PFAS) have been on the rise. These ether-PFAS are deemed as PFAS replacement chemicals. To understand distribution of ether-PFAS in plant-soil systems, we investigated plant uptake of five selected ether-PFAS (i.e., PFMOPrA, PFMOBA, GenX, ADONA, F53B) by Carex comosa (longhair sedge) and the fractionation of these compounds in soil. Our results demonstrated that all five ether-PFAS in this study were taken up by C. comosa and translocated to plant shoots to different extents. Exposure concentration and time both positively affected plant uptake of ether-PFAS. Unlike the other four ether-PFAS, F53B with the longest carbon chain length and a sulfonic functional group was largely accumulated in C. comosa roots with limited translocation to plant shoots. Results from sequential extractions revealed that the five ether-PFAS had different distributions in soil with regard to extractable by water, basic methanol, acidic methanol and non-extractable. Concentration of ether-PFAS in water-soluble fraction increased with decreasing carbon chain length and logKow values and had a positive linear relationship with the mass of ether-PFAS in plant shoots (R2 = 0.64) and in whole plants (R2 = 0.94). Our results also indicated that the aging process could facilitate ether-PFAS to become non-extractable, hence reducing their mobility in soil and bioavailability to plants. |
| Doi | 10.1016/j.scitotenv.2020.144805 |
| Pmid | 33529820 |
| Wosid | WOS:000627895900031 |
| Url | https://www.proquest.com/docview/2486145922?accountid=171501&bdid=35857&_bd=V2nMySxBsJFW1vdxKYqLjHvfZhU%3D |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |