title: Evaluating the impacts of some environmentally relevant factors on the availability of bisphenol A with negligible-depletion SPME.
abstract: The effect of some environmentally relevant factors including salinity, pH, and humic acids on the availability of bisphenol A (BPA) was evaluated by using the negligible-depletion solid-phase microextraction (nd-SPME) biomimetic method. With the variation of salinity (0-500 mM NaCl) and pH (5.0-8.5) of aqueous solutions, the partition coefficients of BPA between the nd-SPME fiber and the aqueous solution varied in the range of logD=3.55-3.86, which indicates that the salinity and pH can influence the availability of BPA. By using Acros humic acid as model dissolved organic matter (DOM), it was also demonstrated that the environmental factors such as salinity and pH could affect the partitioning of BPA between DOM and aqueous solutions. The determined partition coefficients of BPA between dissolved organic carbon (DOC) and aqueous solutions were in the range of logD(DOC)=4.03-5.60 for Acros humic acid solutions with 1-50 mg l(-1) DOC. The influence of salinity and pH on logD(DOC) was more significant at low concentration (0-5 mg l(-1)) of DOC.
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
authors.forename: Xia-lin
authors.initials: XL
authors.lastname: Hu
authors.forename: Jin-feng
authors.initials: JF
authors.lastname: Peng
authors.forename: Jing-fu
authors.initials: JF
authors.lastname: Liu
authors.forename: Gui-bin
authors.initials: GB
authors.lastname: Jiang
authors.forename: Jan Ake
authors.initials: JA
authors.lastname: Jönsson
mesh_terms: D001559:Benzhydryl Compounds; D001682:Biological Availability; D002851:Chromatography, High Pressure Liquid; D006812:Humic Substances; D006863:Hydrogen-Ion Concentration; D010636:Phenols / Q000493:pharmacokinetics*; D012965:Sodium Chloride / Q000737:chemistry; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D006812:Humic Substances; D010636:Phenols; D012965:Sodium Chloride; C006780:bisphenol A; D000098826:Bisphenol A Compounds