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Mineralogical Magazine; April 2003; v. 67; no. 2; p. 163-171; DOI: 10.1180/0026461036720093
© 2003 Mineralogical Society of Great Britain and Ireland
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Airborne particulate matter (PM10) in the china clay area, Cornwall, UK

B. Parsons1, L. Salter1, T. Coe2, R. Mathias2, R. J. Richards3 and T. P. Jones2

1 Cornwall College, Cornwall TR15 3RD, UK
2 Department of Earth Sciences, Cardiff University, Park Place, Cardiff CF10 3US, UK
3 School of Biosciences, Cardiff University, Museum Avenue, Cardiff CF10 3YE, UK

* E-mail: barbara.parsons{at}cornwall.ac.uk

Work was undertaken in 1997 as part of a UK government programme to monitor air quality in the Cornish china clay area. These studies showed that concentrations of airborne particulate matter with an aerodynamic diameter <10 µm (PM10) did not exceed UK National Air Quality Strategy (NAQS, 1995) guidelines but were, however, greater than those normally associated with rural areas. Subsequently, in the summer of 2000, airborne dust sampling was conducted at three sites around the IMERYS (formerly ECCI) Kernick mica dam, a potential source of resuspended airborne particulates from china clay waste minerals. Analytical scanning electron microscopy examination of the collected material suggested that up to 61% of the airborne PM10 monitored next to the mica dam could be associated with china clay extraction compared with 46% 2 km to the south. Results showed the presence of substantial percentages of respirable kaolinite, muscovite and quartz; the major components of china clay waste. The health effects of the particular mineral dust emissions associated with china clay mining are reviewed.

KEYWORDS: china clay, mica dams, PM10, airborne dust, health effects




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Mineralogical Magazine, April 1, 2003; 67(2): 153 - 162.
[Abstract] [Full Text] [PDF]


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