Elemental composition of airborne dust in the Shale Shaker House during an offshore drilling operation

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      <subfield code="a">During 2 days of an offshore drilling operation inthe North Sea, 16 airborne dust samples from the atmosphere of the Shale Shaker House were collected onto filters. During this operation, drilling mud composed of a water slurry of barite (Ba SO4) together with minor amounts of additives, among them chrome lignosulphonate and chrome lignite, was circulated between the borehole and the Shale Shaker House. The total amount of dust collected varied from 0.04 to 1.41 mg m exp.(-3) with barium (Ba) as the single most abundant element. The open shale shaker turned out to be the major cause of generation of dust from the solid components of the drilling mud</subfield>
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