Sorption behavior of phenanthrene in Yangtze estuarine sediments: Sequential separation

► Dual models fitted the experimental data well with R2 > 0.99. ► Sediments were sequentially separated to remove the carbonate and OC. ► OC dominated the whole sorption in sediment samples when TOC > 1%. ► Minerals could dominate the sorption in sediments with 0.1% < TOC < 1% at low Cw.