Then, trophodynamics of dioxins in the marine food web were studied.Positive relationships were found between trophic levels and lipid equivalent concentrations of most coplanar PCBs.

• 对泥样中的二恶英类物质、六六六类物质和六氯苯检测后发现，柱状泥各层都有二恶英类物质检出，说明渤海湾生物还处于二恶英类物质的暴露中。