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Vertical Distribution and Partitioning of Chromium in a Glaciof luvial Aquifer
Author(s) -
Nikolaidis Nikolaos P.,
Robbins Gary A.,
Scherer Michelle,
McAninch Brian,
Binkhorst Gordon,
Asikainen Jay,
Suib Steven L.
Publication year - 1994
Publication title -
groundwater monitoring and remediation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 47
eISSN - 1745-6592
pISSN - 1069-3629
DOI - 10.1111/j.1745-6592.1994.tb00476.x
Subject(s) - chromium , environmental remediation , aquifer , chemistry , environmental chemistry , environmental engineering , groundwater , contamination , environmental science , geology , geotechnical engineering , ecology , organic chemistry , biology
The vertical distribution and partitioning (between the solid and aqueous phase) of chromium in a glaciofluvial aquifer in northeastern Connecticut were assessed. Most of the chromium (99 percent of its mass) is bound to the soil. Retardation is primarily the result of binding to organic matter and adsorption to iron oxide coatings. However, other attenuation mechanisms also appear to be significant. If the degree of chromium binding observed here is representative of other chromium contaminated sites, pump‐and‐treat remediation will not remove the vast amount of chromium from the subsurface. However, most of the chromium may be immobile, and removal may not be required following the initial pumping to remove the mobile fraction. Further knowledge of the mechanisms that bind chromium to the soil, their reversibility, and their kinetics is essential to developing effective remediation strategies.