Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Togwell A. Jackson"'
Autor:
Togwell A. Jackson
Publikováno v:
Journal of Paleolimnology. 61:387-401
Total mercury (Hg) profiles of sediment cores from lakes serve as historical records of Hg pollution. They do not, however, provide information about temporal variations in the abundance of the toxic, preferentially bioaccumulated species methylmercu
Autor:
Togwell A. Jackson
Publikováno v:
Geomicrobiology Journal. 35:334-353
Chemical properties and δ13C values of benzene/methanol-extractable “humic matter” and associated kerogen in a large, diverse collection of Precambrian and Phanerozoic sediments from different part...
Autor:
Togwell A. Jackson
Publikováno v:
Environmental Toxicology and Chemistry. 37:515-529
Organs and tissues of whitefish and trout from mercury (Hg)-polluted Lake Ontario were analysed for Hg isotopes, methylmercury (CH3Hg+), and inorganic Hg to investigate possible mass-dependent fractionation (MDF) and mass-independent fractionation (M
Autor:
Derek C. G. Muir, Peter M. Outridge, Jules M. Blais, Timothy J. Veverica, William F. Fitzgerald, Colin A. Cooke, Ana Carolina Ruiz-Fernández, Kenneth H. Coale, John E. Gray, Chad V. Furl, Sarah E. Rothenberg, W. Lyle Lockhart, Collin A. Eagles-Smith, Vincent L. St. Louis, Peter C. Van Metre, Kathleen R. Laird, Brian F. Cumming, Daniella Barraza, Hamed Sanei, Scott A. Reinemann, E.K. Skierszkan, M. Alisa Mast, Biplob Das, William F. Donahue, Robie W. Macdonald, Togwell A. Jackson, Chris J. Curtis, Callie A. Mathieu, Johan A. Wiklund, Daniel R. Engstrom, Paul E. Drevnick, Roland I. Hall, Rhea D. Sanders, Brent B. Wolfe
Publikováno v:
Science of The Total Environment. 568:1157-1170
For the Western North America Mercury Synthesis, we compiled mercury records from 165 dated sediment cores from 138 natural lakes across western North America. Lake sediments are accepted as faithful recorders of historical mercury accumulation rates
Autor:
Togwell A. Jackson
Publikováno v:
Applied Geochemistry. 71:86-98
The Wabigoon River (Ontario, Canada) was affected by dams starting in 1898 and was polluted with pulp and paper mill wastes starting in 1913 and mercury from a chlor-alkali plant from 1962 to 1975. A dated sediment core from a riverine lake was analy
Publikováno v:
Geomicrobiology Journal. :1-21
Analysis of water and sediments from deep and shallow environments in lakes located 6–154 km east or southeast of the smelters at Sudbury, Ontario (Canada) revealed variable, interactive effects of copper, nickel, and sulfate from smelter fallout o
Autor:
Togwell A. Jackson
Publikováno v:
Geoderma. :78-91
Lichens and mosses growing on granitic gneiss in a boreal forest environment caused intense chemical weathering of the rock, producing exclusively biogenic secondary minerals and soils and accumulating solubilised rock-forming elements (Si and metals
Autor:
Togwell A. Jackson
Publikováno v:
Precambrian Research. 264:30-35
This paper reports new information about variations in the abundance of photosynthetic oxygen through Precambrian and Paleozoic time. Non-detrital marine sediments (cherts, limestones, and dolomite) were analysed for NH2OH·HCl/acetic acid-extractabl
Autor:
Togwell A. Jackson
Publikováno v:
Geomicrobiology Journal. 32:799-826
Cores from Arctic and subarctic Canadian lakes were subjected to isotopic, chemical, micropaleontological, and geochronological analyses for the purpose of investigating mass-independent fractionation (MIF) of mercury isotopes. The cores preserved re
Publikováno v:
Geomicrobiology Journal. 32:724-750
Sediment and water samples representing a pollution gradient in a long, narrow lake polluted at one end by heavy metals, arsenic, and acid drainage from mine tailings, together with samples from an unpolluted reference lake, were analyzed to determin