PCBs in Donggang River Watershed sediments, Taiwan.

Polychlorinated biphenyls (PCBs) were measured in the sediments of the Donggang River Watershed, one of the most polluted bodies of water in southern Taiwan. Field data showed that detectable concentrations of 121 PCB congeners were found and total PCBs were measured in 32 out of 33 samples, and 98 congeners were detected. The total concentrations of PCBs in the sediment ranged from 25.

Characteristics and distribution of polycyclic aromatic hydrocarbons in sediments from Donggang river and its tributaries, Taiwan.

Analyses of environmental xenobiotic pollutants, such as polycyclic aromatic hydrocarbons (PAHs), were an important worldwide issue because of their detrimental effects on aquatic biota. In this study, we had investigated the distribution, origin and toxicity of PAHs in the Donggang watershed sediments in southwestern Taiwan. The study results showed that the sixteen representative PAHs were detected in all collected samples with concentrations ranging from 23 to 2534 ngg(-1) dw.