Optimization of Solid-Phase Extraction Conditions for Perfluorooctanoic Acid in LeachateYing WANG, Xiaolan ZENG, Zhipeng YU, Jiyuan JIN, Ruidong MI and Yuan SUNWuhan Univ. J. Nat. Sci., 27 4 (2022) 341-348DOI: https://doi.org/10.1051/wujns/2022274341