Mass concentrations of airborne asbestos in the non-occupational environmental : a preliminary report of U.K. measurements

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      <subfield code="a">Airborne asbestos mass concentrations were measured at a number of sites by taking high-volume electrostatic precipitator samples and analysisng by X-ray difraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRD was shown to overestimate chrysotile levels owing to interference by non-fibrous analogues. The sites sampled included two asbestos waste tips, the inmediate enviroments of two asbestos products factories, a decontamination site and a busy urban road junction, as well as rural and urban background. Levels appreciably above the background were recorded at industrial sites</subfield>
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