title: Changes in the adsorption of bisphenol A, 17 α-ethinyl estradiol, and phenanthrene on marine sediment in Hong Kong in relation to the simulated sediment organic matter decomposition.
abstract: Marine sediment with an input of particulate organic matter was incubated to simulate the early aging process. On the sediment after various incubation periods, adsorption and desorption tests were conducted for three selected organic micropollutants: bisphenol A (BPA), 17α-ethinyl estradiol (EE2), and phenanthrene (Phe). The results showed significant sediment organic matter (SOM) decomposition during the incubation, and the SOM decay and transformation had a profound impact on the adsorption of organic compounds by the sediment. An increasing-delay-increasing pattern of change was observed for the SOM normalized partition coefficients of EE2 and Phe. This change was accordant to the transformation of SOM from labile organics into active biomass and its microbial products, and finally into more condensed and humic-like substances. Comparison between the 3 model micropollutants indicates that the chemical adsorption behaviors were mostly affected by their hydrophobic properties.
authors.affiliation: Department of Civil Engineering, The University of Hong Kong, Hong Kong, China; Guangdong Key Laboratory of Membrane Materials and Membrane Separation, Guangzhou Institute of Advanced Technology, Chinese Academy of Sciences, Guangzhou, China.
authors.forename: Ying-heng
authors.initials: YH
authors.lastname: Fei
authors.affiliation: Department of Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA, USA.
authors.forename: Baoshan
authors.initials: B
authors.lastname: Xing
authors.affiliation: Department of Civil Engineering, The University of Hong Kong, Hong Kong, China. Electronic address: xlia@hkucc.hku.hk.
authors.forename: Xiao-yan
authors.initials: XY
authors.lastname: Li
mesh_terms: D000327:Adsorption; D001559:Benzhydryl Compounds / Q000737:chemistry*; D018533:Biomass; D004784:Environmental Monitoring; D004958:Estradiol / Q000032:analysis / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D006723:Hong Kong; D008956:Models, Chemical; D010616:Phenanthrenes / Q000032:analysis / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D004958:Estradiol; D010616:Phenanthrenes; D010636:Phenols; D014874:Water Pollutants, Chemical; C031181:phenanthrene; C006780:bisphenol A; D000098826:Bisphenol A Compounds
keywords: Adsorption; Endocrine disrupting chemicals (EDCs); Marine sediment; SOM decomposition; Sediment organic matter (SOM)