synopsisSorption by wool of mercuric nitrate, mercuric chloride, and methylmercuric chloride was measured by atomic absorption spectroscopy. Both inorganic mercury compounds are efficiently taken up a t low concentrations from acid solution. The rate of binding from the nitrate is appreciably slower than from the chloride. Methylmercuric chloride is bound slowly at low pH, rapidly at p H 6. The extent of its binding is roughly 10% to 20% of that of the inorganic salts. The wool-bound mercury can be recovered by serial extraction with aqueous citrate or ethylenediaminetetraacetate a t pH 6. The residual, firmly bound mercury is roughly equivalent to the sulfhydryl sulfur. Sorption of inorganic mercury compounds a t low pH roughly follows a Freundlich isotherm in the concentration range 5 X lo6 to 10-lM. Sorption of methylmercuric chloride at pH 6 follows a roughly parallel isotherm in the range 5 X to 10-3M. These datasuggest the potential value of wool and other animal keratins to remove and recover mercury from contaminated water. Wool may also serve as an instructive model for mercury binding and release in the body.
The Geo-mapping Frontiers project was initiated to improve geoscience knowledge in the least understood parts of Canada's north. This publication presents a compilation and interpretation of geologic structures derived from both high and low resolution enhanced
magnetic data (available from the GSC), enhanced LANDSAT imagery and topographic (DEM) data. The data sets included in this OPEN FILE include low resolution airborne magnetic data, a CDED DEM, legacy geological data (IPY map) and structural data compiled by the Yukon and NWT Geological Surveys as
well as a newly interpreted dataset of geologic structures for the entire area of Canada's Arctic north of 60°.
This is the second of a series of reports for the Geo-mapping Frontiers project, and is intended to provide structural information for mapping and exploration in Canada's Arctic.
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