Sorption of 17α-ethinyl estradiol, bisphenol A and phenanthrene to different size fractions of soil and sediment

Investigation of pharmaceuticals, personal care products and endocrine disrupting chemicals in a tropical urban catchment and the influence of environmental factors

“…The concentration ratios between tributaries and reservoir were larger than 1, indicating the attenuation of BPA in the reservoir. As discussed for caffeine, these processes would likely involve dilution, sorption (Sun et al, 2012), photo-and microbial degradation (Table S8). Compared to the other sites, Canals 2 ,3 and 5 had relatively higher median concentrations of BPA (260.5, 237.5 and 184 ng/L, respectively).…”

The effect of particle size on sorption of estrogens, androgens and progestagens in aquatic sediment

“…Additionally, estimated K d values from each fraction and steroid were used to determine relationships between the K d values and physical charateristics of each particle size fraction (Table 4). While complete sorption isotherms were not measured, a previous study evaluating sorption of T and EE2 to sediment particle fractions yielded isotherms described by linear or near linear models [23,24].…”

“…Existing studies focus on interactions between estrogens and colloids [12,19] or dissolved organic matter [20] or selected soil/sediment particle size fractions [2,21] or mineral constituents [22] and do not look at distribution among fractions within a whole soil or sediment. Sun et al [23] systematically evaluated the sorptive behavior of a synthetic estrogen, 17␣-ethinyl estradiol (EE2), and two other endocrine active compounds, BPA and phenanthrene, in soil and sediment particle size fractions and determined sorption of all three compounds was strongly correlated with the organic carbon (OC) content of the soil. Recently, Yong et al [24] evaluated sorption behavior of T in five fractions from an agricultural soil.…”

Adsorptive fractionation of dissolved organic matter (DOM) by carbon nanotubes

“…In addition, CNTs have been found to interact with dissolved organic matter (DOM), modifying behavior of both DOM and CNTs (Hyung et al, 2007;Lin and Xing, 2008a;Lin et al, 2009;Sun et al, 2012;Yang and Xing, 2010). To better understand the environmental implications of CNTs release into water bodies, one must study DOM adsorption by CNTs (Wang et al, 2011(Wang et al, , 2008Yang and Xing, 2009) and more importantly, evaluate DOM fractionation during adsorption.…”