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Laboratory studies of aqueous partitioning tracer tests for measuring nonaqueous phase liquid volumes
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ABSTRACT: The partitioning tracer test (PT) is an innovative method for measuring nonaqueous phase liquid (NAPL) volume distributions in contaminated aquifers. During a PTT, a tracer pulse containing nonpartitioning and partitioning tracers is injected to an aquifer and extracted from downgradient wells. The appearance of the tracers at downgradient locations is analyzed to determine tracer mean residence times, for example, using the methods of moments and retardation factors based on reside...
Related newspaper, magazine, and journal articles from HighBeam Research
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Selected Traditional Structural Descriptors and R^sub M^ Values for Estimation and Prediction of Lipophilicity of Homologous Series of Saturated Fatty Acids
JAOCS, Journal of the American Oil Chemists' Society
; ABSTRACT: An homologous series of carboxylic FA, from methanoic to triacontanoic, were characterized by selected structural descriptors based on distance matrix (W, A, ^sup 0^B, ^sup 1^B), adjacency matrix (M, M^sup ν^, ^sup 0967;, ^sup 1967;, ^sup 2967;, ^sup 0967;^sup ν^, ^sup 1967;^sup
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Mobility and Persistence of Petroleum Hydrocarbons in Peat Soils of Southeastern Mexico
Soil & Sediment Contamination
; Spilled crude petroleum from oil wells contains numerous hydrocarbons, some of which are toxic and threaten life. We have studied the mobility and persistence of hydrocarbons in waterlogged soils that contain large proportions of fermented organic matter (Histosols) and large concentrations of
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Diffusion of macromolecules in membranes of hyalyronic acid ester
Biomedical Materials
; Biocompatible and biodegradable hyaluronate esters may be useful in peptide controlled release. Permeability and partition coefficients were measured for a series of solutes in membranes formed from ethyl or benzyl esters of the polysaccharide hyaluronic acid. The solutes were primarily peptides
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Absorption and drug development: solubility, permeability and charge state.(Book Review)
Chemistry and Industry
; Absorption and drug development: solubility, permeability and charge state A Avdeef Chichester: John Wiley & Sons, 2003 Drug development is one of the more glamourous areas of chemistry. Whether the image is of scientists in white coats synthesising innovative drugs in clean and well-equipped
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Solvent extraction principles and practice (2nd ed).
Chemistry and Industry
; Solvent extraction principles and practice (2nd ed) J Rydberg, M Cox, C Musikas and G Choppin (eds) New York: Marcel Dekker, 2004 Pages 750 195 [pounds sterling] ISBN 0 8247 5063 2 The prototypical separation process is distillation. That was what those hairy old alchemists did with their alembics
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