Atmospheric Pb and Ti Accumulation Rates from Sphagnum Moss: Dependence upon Plant Productivity

Autor:	William Shotyk, H. Kempter, Michael Krachler
Rok vydání:	2010
Předmět:	geography geography.geographical_feature_category biology Chemistry Ombrotrophic Wetland General Chemistry biology.organism_classification Sphagnum Moss Atmosphere Productivity (ecology) Bioaccumulation Environmental chemistry Botany Environmental Chemistry Bog
Zdroj:	Environmental Science & Technology. 44:5509-5515
ISSN:	1520-5851 0013-936X
DOI:	10.1021/es100366d
Popis:	The accumulation rates of atmospheric Pb and Ti were obtained using the production rates of Sphagnum mosses collected in four ombrotrophic bogs from two regions of southern Germany: Upper Bavaria (Oberbayern, OB) and the Northern Black Forest (Nordschwarzwald, NBF). Surfaces of Sphagnum carpets were marked with plastic mesh and one year later the production of plant matter was harvested. Metal concentrations were determined in acid digests using sector field ICP-MS employing well established analytical procedures. Up to 12 samples (40 × 40 cm) were collected per site, and 6−10 sites were investigated per bog. Variations within a given sampling site were in the range 2.3−4× for Pb concentrations, 1.8−2.5× for Ti concentrations, 3−8.3× for Pb/Ti, 5.6−7.8× for Pb accumulation rates, and 2.3−6.4× for Ti accumulation rates. However, the median values of these parameters for the sites (6−10 per bog) were quite consistent. The mosses from the bogs in NBF exhibited significantly greater productivity (187−202 g m−...
Databáze:	OpenAIRE
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