title: Complexation-flocculation combined with microwave-assisted headspace solid-phase microextraction in determining the binding constants of hydrophobic organic pollutants to dissolved humic substances.
abstract: The binding constants, KDOC, of selected polycyclic aromatic hydrocarbons (PAHs)-phenanthrene, anthracene, fluoranthene, and pyrene-to dissolved humic substances (DHS) were determined by complexation-flocculation combined with microwave-assisted headspace solid-phase microextraction (CF-MA-HS-SPME). The results obtained are comparable with KDOC data reported in the literature. No disruption of the PAH to DHS binding equilibrium was observed during the complexation-flocculation process. The present study, which is the first to determine KDOC by CF-MA-HS-SPME, provides an alternative approach to determine the KDOC of PAHs. CF-MA-HS-SPME provides some advantages over other methods, such as no limitation of fluorescent compounds, greater determination speed, and the capability of measuring various compounds simultaneously.
authors.affiliation: Department of Marine Environment and Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan. linnohc@mail.nsysu.edu.tw.
authors.forename: Ping-Chieh
authors.initials: PC
authors.lastname: Hsieh
authors.forename: Chon-Lin
authors.initials: CL
authors.lastname: Lee
authors.forename: Jen-Fon
authors.initials: JF
authors.lastname: Jen
authors.forename: Kuei-Chen
authors.initials: KC
authors.lastname: Chang
mesh_terms: D001665:Binding Sites; D004784:Environmental Monitoring / Q000295:instrumentation; D004867:Equipment Design; D005427:Flocculation; D008401:Gas Chromatography-Mass Spectrometry; D006812:Humic Substances / Q000032:analysis*; D057927:Hydrophobic and Hydrophilic Interactions; D008872:Microwaves; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000302:isolation & purification; D052617:Solid Phase Microextraction / Q000295:instrumentation*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006812:Humic Substances; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical