Author: Gabriel Orlando GrimaldiPublisher:
ISBN:
Category :
Languages : en
Pages : 234
Book Description
Sorption of Polycyclic Aromatic Hydrocarbons to Minerals and Low-organic-carbon Aquifer Sediments
Author: Gabriel Orlando GrimaldiPublisher:
ISBN:
Category :
Languages : en
Pages : 234
Book Description
Sorption of Mixtures of Polycyclic Aromatic Hydrocarbons on Low Organic Content Soils
Author: Daniel Peter SmidtPublisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 176
Book Description
Black Carbon in Marine Sediments
Author: AmyMarie Accardi-DeyPublisher:
ISBN:
Category : Carbon compounds
Languages : en
Pages : 304
Book Description
Sorption is a key factor in determining the fate of polycyclic aromatic hydrocarbons (PAHs) in the environment. Here, PAH sorption is proposed as the sum of two mechanisms: absorption into a biogenic, organic carbon (OC) fraction and adsorption onto a combustion-derived, black carbon (BC) fraction. To study BC adsorption, a 375 deg C thermal oxidation method was employed to remove OC and isolate the BC fraction. Test studies showed that nitrogen-containing macromolecules charred during this pretreatment causing a positive bias to the BC measurement. Meanwhile, the oxidation of relatively small BC particles underestimated the total BC content in non-charring samples. Models based on carbon oxidation were then proposed to estimate reasonably the total BC and OC contents of sediment samples. The adsorption of pyrene onto isolated BC particles was then studied by constructing a nonlinear isotherm, which was characterized with a BC-normalized distribution coefficient and a Freundlich exponent. Pyrene sorption to Boston Harbor sediment was then modeled as the sum of OC absorption and BC adsorption using the measured adsorption parameters and literature absorption values. Finally, literature reports of high PAH distribution coefficients from the field and nonlinear PAH isotherms from the laboratory were re-explained by considering BC adsorption.
U.S. Geological Survey Water-supply Paper
Author: Sorption of Hydrophobic Ionizable Organic Compounds in Low Organic Carbon Aquifer Material
Author: Christopher William LopezPublisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 260
Book Description
Sorption Kinetics of Polynuclear Aromatic Hydrocarbons on Aquifer Material
Author: Doreen F. ConnaughtonPublisher:
ISBN:
Category :
Languages : en
Pages : 370
Book Description
Toxicological Profile for Polycyclic Aromatic Hydrocarbons
Author: Publisher:
ISBN:
Category : Polycyclic aromatic hydrocarbons
Languages : en
Pages : 500
Book Description
Polycyclic Aromatic Hydrocarbon Bioavailability in Contaminated Soils and Sediments
Author: Joseph Paul KreitingerPublisher:
ISBN:
Category :
Languages : en
Pages : 350
Book Description
Polycyclic Aromatic Hydrocarbons
Author: Leif Krag RowlesPublisher:
ISBN:
Category : Lake sediments
Languages : en
Pages : 360
Book Description
Sorption Properties of Sediments and Energy-related Pollutants
Author: John J. HassettPublisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 148
Book Description