Effect of soil organic matter on the plant uptake of perfluorooctanoic acid (PFOA) and perfluorooctanesulphonic acid (PFOS) in lettuce on granular activated carbon-applied soil

The presence of perfluorooctanoic acid (PFOA) and perfluorooctanesulphonic (PFOS) in crops is an important consideration for food safety. soil organic matter (SOM) content may affect the adsorption potential PFOA PFOS water their subsequent uptake crops. To better understand these dynamics, lettuce were investigated using granular activated carbon (GAC)-treated soils with varying SOM content. GAC was investigated, maximum capacities calculated to be 9.091 mg g?1 27.778 g?1, respectively. These values decreased 5.208 17.241 respectively, after addition 0.04 wt% humic acid. average plant factor (PUF) low high perfluoroalkyl polyfluoroalkyl (PFAA)-contaminated 4.0 restricted 0.353 0.108 PFOS. PUFs approximately two times lower than those 2.6 SOM. Addition 1 successfully reduced PUF by up 99.4%, 0.006 0.005 SOM-treated 0.079 0.023 soil. Although GAC-treated drastically decreased, at least four higher that Therefore, remediation PFOA- PFOS-contaminated farmland carbonaceous adsorbent.