Spatial distribution of perfluorooctane sulfonate (PFOS) in major rivers in southwest Nigeria

作者：Ololade I A^*

来源：Toxicological and Environmental Chemistry, 2014, 96(9): 1356-1365.

DOI：10.1080/02772248.2015.1028409

• perfluorooctane sulfonate
• Nigeria
• solid-phase extraction
• river water
• organic carbon
• sediment

Concentrations of perfluorooctane sulfonate (PFOS) were measured for the first time in major rivers within southwest, Nigeria. PFOS was concentrated from water and sediment using solid-phase extraction, identified and quantified with high-performance liquid chromatography coupled with tandem mass spectrometry. Concentrations of PFOS ranged from 1.71 to 16.19 ng L-1 in water, and from 1.64 to 10.29 ng g(-1) in sediments across all locations. Comparatively, the concentrations of PFOS observed in this study were within the range ever measured in the environment. Field-based sediment water distribution coefficients (log K-d, L kg(-1)) ranged from 2.08 to 3.56. While no correlation was observed between K-d and organic carbon contents, there was significant positive correlation between K-d and salinity (r(2) = 0.7867), which suggested that activities capable of increasing salinity can enhance PFOS removal from the environment.

• 出版日期2014-10-21