Quantification of pollutant lead in forest soils
2005 (English)In: Soil Science Society of America Journal, ISSN 0361-5995, Vol. 69, 1399-1404 p.Article in journal (Refereed) Published
Fifteen podzolic forest soils in Norway covering sites with a wide range of atmospheric deposition rates were assayed for their contents of pollutant Ph. Samples from the Of, Oh, E, B, and C horizons were studied. Nitric acid soluble contents of Ph and the corresponding stable Ph isotope ratios were determined by sector field inductively coupled plasma-mass spectrometry (ICP-MS). On the basis of existing knowledge on Pb-206/Pb-207 ratios in atmospheric deposition over Norway across time, the percentage of the Ph supplied by air pollution was calculated for the various samples and soil horizons, assuming that the C horizon was undisturbed. More than 90% of O horizon Ph was from pollution, even at remote sites in the far north. Significant fractions of Ph were pollution-derived also in the E and B horizons at most sites. In the south, more than half of the Ph derived from air pollution has now moved to the upper mineral horizons. Stable Ph isotope ratios are a very precise tool for revealing Ph pollution in terrestrial ecosystems. The present work suggests that similar studies should be done in other parts of the world to objectively assess the anthropogenic contribution to surface soil Ph.
Place, publisher, year, edition, pages
2005. Vol. 69, 1399-1404 p.
IdentifiersURN: urn:nbn:se:umu:diva-20675DOI: 10.2136/sssaj2004.0095OAI: oai:DiVA.org:umu-20675DiVA: diva2:209287