Abstract
Abstract Boron and lithium were determined in over a hundred coals and power station ashes by inductively coupled plasma atomic emission spectroscopy. The levels of boron in coals and fly ashes range from 15 to 83 μg.g−1 and from 23 to 600 μg.g−1, respectively, while lithium occurred at levels of between 45 and 81μg.g−1 in coals and 77 and 359μg.g−1 in fly ashes. Both elements were found to vary considerably between different coals and ashes produced. In most cases the boron concentration was found to increase systematically between the first and last precipitators where smaller particle size fractions are collected. The availability of boron from the leaching of fly ashes by water was investigated. Leachabilities were found to vary for ashes produced at different power stations.
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