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Biological Monitoring of Airborne Deposition Within and Around the Ilimaussaq Intrusion, Southwest Greenland

Monograph
By: Kim Pilegaard(Author)
28 pages, illustrations
Biological Monitoring of Airborne Deposition Within and Around the Ilimaussaq Intrusion, Southwest Greenland
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  • Biological Monitoring of Airborne Deposition Within and Around the Ilimaussaq Intrusion, Southwest Greenland ISBN: 9788763511872 Paperback Jan 1987 Not in stock: Usually dispatched within 1-2 weeks
    £20.99
    #212191
Price: £20.99
About this book Customer reviews Biography Related titles

About this book

The lichen Cetraria nivalis and the moss Hylocomium splendens were sampled within and around the alkaline Ilimaussaq intrusion in Southwest Greenland as monitors of the deposition of airborne metals and other elements. The intrusion is rich in U, Th, rare earth elements and heavy metals. The samples were analysed by instrumental neutron activation analysis (Na, K, Sc, Cr, Fe, Co, Zn, As, Se, Br, Rb, Sr, Ag, Sb, Cs, La, Ce, Nd, Sm, Eu, Yb, Tb, Lu, Hf, Ta, W, Au, Hg, Th and U) and by atomic absorption spectrophotometry (Cd and Pb).

Many elements characteristic of the rock-intrusion were found in significantly higher concentrations in plant samples from the intrusion than elsewhere. A factor analysis for Cetraria (including 28 elements determined in >70% of all samples) shows that 5 factors account for 79% of the total variation. The first factor (accounting for 52% of the total variation) included the elements characteristic of the intrusion (prominent members: Sc, Fe, Rb, Cs, La, Ce, Nd, Sm, Eu, Tb, Yb, Lu, Hf, Ta, b, and Th). For Hylocomium (26 elements) 4 factors account for 87% of the total variation. The first factor explained 49% of the total variance and included: Fe, ZN, Rb, Cd, Cs, La, Ce, Sm, Eu, Tb, Yb, Hf, Ta, Pb, and Th.

The source of elements found in the monitor organisms is the rocks of the intrusion, which weather into fine-grained particles subject to wind transport. Preoperational monitoring (i.e. monitoring before mining activities) is essential in areas where exposed mineralizations can act as natural sources of pollution.

Customer Reviews

Biography

Abstract
Introduction
Site description
Materials and methods
Results
Discussion
Acknowledgements
References
Appendices

Monograph
By: Kim Pilegaard(Author)
28 pages, illustrations
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