Distributions of Persistent Organic Pollutants in Sediments and Mollusks

1 Distributions of Persistent Organic Pollutants in Sediments and Mollusks 

DDT equal variance assumed Equal variance not assumed 

3 Dioxin-like Chemicals (PCBs, PCDDs and PCDFs) 

The PCB congeners with International Union of Pme and Applied Chemistry (lUCAP) numbers 28, 52, 101, 112, 118, 138, 153, 155, 180, and 198 were detected in the sediments of the Bohai Sea, whose total concentration ranged from 0.30 to 14.95 ng/g based on dry weight (dw) with a mean of 3.4 ng/g 

Similarly, the same 10 PCB congeners mentioned above were measured in the mollusks of the Bohai Sea. The PCB concentrations in Laizhou Bay were much higher than those in the other areas. The maximum value was detected in Hutouya adjacent to Laizhou, exceeding 15 ng/g (wet weight), 

---