Fig. 4
From: Microbial diversity and ecotoxicity of sediments 3 years after the Jiaozhou Bay oil spill
The abundance of PAHs in sampling sediment analysis by GC–MS. The symbol An (Bn, Cn): the nst sampling site of line A (B, C); MED: control site in Jiaozhou Bay; SLR: control site in Shilaoren Beach, which was outside of Jiaozhou Bay. Internal standards were determined using p-terphenyl-D14 (10 μg/mL). The abundance of each PAH was calculated by the internal standards