| Abstract: | Exudates from conifer trees, presumably consisting largely of volatile materials, were sampled at 19 subalpine localitites in Colorado and Idaho where anomalous amounts of several metals were determined in vegetation and mull during previous geochemical testing. The trees sampled were lodgepole pine (Pinus contorta), Engelmann spruce (Picea engelmannii) and Douglas fir (Pseudotsuga menziesii). The condensed exudates were passed through No. 40 Whatman filters, and through 5-micron, 0.45-micron, and 0.05-micron average-pore-diameter membrane filters, evaporated to dryness, and each residue was ashed and analyzed by a semiquantitative spectrographic method. The ashed residues of the exudates contain lithium, beryllium, boron, sodium, magnesium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, arsenic, strontium, yttrium, zirconium, molybdenum, silver, lead, bismuth, cadmium, tin, antimony, barium, and lanthanum. The presence of these elements suggests that volatile exudates from vegetation are a medium for the transport of elements in the biogeochemical cycle in subalpine environments. Thus, air sampling and analysis of aerosols derived from volatile exudates may be a useful tool in geochemical exploration. ?? 1974. |
| Genre: | Article |
| ProdID: | 70011076 |
| Citation Author: | Curtin, G. C.; King, H. D.; Mosier, E. L. |
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| Citation End Page: | 263 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geochemical Exploration |
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| Citation Number Of Pages: | 19 |
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| Citation Search Results Text: | Movement of elements into the atmosphere from coniferous trees in subalpine forests of colorado and Idaho; 1974; Article; Journal; Journal of Geochemical Exploration; Curtin, G. C.; King, H. D.; Mosier, E. L. |
| Citation Start Page: | 245 |
| Citation Volume: | 3 |
| Citation Year: | 1974 |
| Type: | citation/reference |
| Text: | Movement of elements into the atmosphere from coniferous trees in subalpine forests of colorado and Idaho; 1974; Article; Journal; Journal of Geochemical Exploration; Curtin, G. C.; King, H. D.; Mosier, E. L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1974 00:00 -0600 |
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