Abstract
Abstract An analytical procedure involving differential thermal extraction has been used to partition lead species in soil and dust into five thermal fractions: 120°C loss of moisture, 400°C removal of organic matter, 600°C low temperature fraction, 950°c high temperature fraction, and residue. Results obtained from samples of mine‐waste contaminated soils and dusts from Winstar, England showed that most of the lead was in the high temperature fraction, primary mineral galena (PbS), and residue, the weathered product of galena. Experiments with reciplicate samples demonstrate adequate precision which is limited by subsampling. The accuracy, evaluated by comparing total lead with the sum of the five fractions, proved to be satisfactory.
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