Occurrence and Partitioning of Antibiotics in the Water Column and Bottom Sediments from the Intertidal Zone in the Bohai Bay, China

摘要

In this study, the temporal and spatial trends of ten antibiotics belong to four different groups in aqueous and sediment matrices were investigated in the intertidal zone of Bohai Bay as a single object. The total concentrations of those antibiotics ranged from 41.53 to 222.43 ng L-1 and 7.71 to 130.36 ng g(-1) in the surface water and sediment, respectively, and they contained higher levels and detected rates than those in the coastal and offshore areas. Seasonal variation might be impacted by the seasonal river discharge and aquaculture activities. As exhibit, the regions with river discharge or human aquaculture activities exhibited high concentrations of antibiotics in the water and sediments. The pseudo-partitioning values of targeted compounds ranged from 10 to 591 L kg(-1), but they were relatively smaller in the intertidal zone of the Bohai Bay than in the fresh water.