Now showing items 1-10 of 15
Solubilization of hen brain neurotoxic esterase in dimethylsulfoxide
(Elsevier, 1985-10-15)
Neurotoxic esterase is the putative site of initiation of organophosphorus-induced neuropathy. The protein is membrane-associated and will thus require solubilization before it can be purified. Its enzymic activity was ...
Environmental Reporting by the Fortune 50 Firms
(Springer-Verlag; Springer-Verlag New York Inc., 1997-11)
Improving exposure assessment in environmental epidemiology: Application of spatio-temporal visualization tools
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2005-05)
A thorough assessment of human exposure to environmental agents should incorporate mobility patterns and temporal changes in human behaviors and concentrations of contaminants; yet the temporal dimension is often ...
Mercury Air/Surface Exchange Kinetics of Background Soils of the Tahquamenon River Watershed in the Michigan Upper Peninsula
(Kluwer Academic Publishers; Springer Science+Business Media, 2001-02)
Air/surface exchange of mercury was investigated over background soils at five sites in the Tahquamenon River watershed in the Michigan Upper Peninsula in the summer of 1998. Measurements of Hg fluxes were performed during ...
Factors Controlling Mercury Transport in an Upland Forested Catchment
(Kluwer Academic Publishers; Springer Science+Business Media, 1998-07)
Total mercury (Hg) deposition and input/output relationships were investigated in an 11-ha deciduous forested catchment in northern Vermont as part of ongoing evaluations of Hg cycling and transport in the Lake Champlain ...
Mercury Accumulation in Foliage over Time in Two Northern Mixed-Hardwood Forests
(Kluwer Academic Publishers; Springer Science+Business Media, 2002-01)
Concentrations of mercury (Hg) in live foliage increased ten-fold from spring bud break (mean ± std. dev. from bothsites: 3.5±1.3 ng g -1 ) to autumn litterfall(36±8 ng g -1 ). Mercury in foliage did not behavesimilarly ...
Historical trends of airborne trace metals in Detroit from 1971 to 1992
(Kluwer Academic Publishers; Springer Science+Business Media, 1996-03)
Ambient concentrations of particulate Fe, Zn, Ph, Ni, Cr, Cd and Hg were measured at nine sites located in the metropolitan area of Detroit from 1971 to 1992. The ambient concentrations of all the trace metals were found ...
Mercury concentrations in two “great waters”
(Kluwer Academic Publishers; Springer Science+Business Media, 1995-02)
Although many sources of Hg to surface waters have been identified including atmospheric deposition, resuspension of contaminated sediments, and direct discharges, there are very few recent data on ambient concentrations ...
International field intercomparison of atmospheric mercury measurement methods
(Kluwer Academic Publishers; Springer Science+Business Media, 1995-02)
To determine the extent of comparability of sampling and analytical procedures for atmospheric mercury (Hg) being used by different scientific groups around the world and hence the compatibility of measurement results, the ...
Wet deposition of mercury and ambient mercury concentrations at a site in the Lake Champlain basin
(Kluwer Academic Publishers; Springer Science+Business Media, 1995-02)
The “Great Waters” program, established in the 1990 Clean Air Act Amendments, mandated that atmospheric deposition of hazardous air pollutants to Lake Champlain (including Hg) be assessed. An assessment of the magnitude ...