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- W85218149 abstract "Cadmium is a heavy metal with the potential of damaging biological systems. Therefore the authors have conducted a survey to screen several forest species for their ability to accumulate this pollutant. Sampling sites were selected on the basis of traffic volume. Leaf samples were collected, washed and analyzed by atomic absorption spectrophotometry. They found no correlation between cadmium concentration in leaves and distance the tree was from the roadway. A direct relationship did exist between volume of traffic and cadmium concentrations. Highest levels (1.0 ppm to 9.95 ppm) were found on the site with a volume of traffic of 60,000 vehicles per day. Lowest levels (0.77 ppm to 4.24 ppm) were detected on the control site which was remote from any major source of contamination. They found cadmium accumulation to be species dependent. Pin oak (Quercus palustris) and hickories (Carya spp.) were found to be the greatest accumulators, while sweetgum (Liquidambar styraciflua), blackgum (Nyssa sylvatica) and black cherry (Prunus serotina) had the lowest cadmium levels at all sites. The second phase of the study was to make a more detailed examination of pin oak under greenhouse conditions to see if the tree is physiologically impaired by various levels of cadmiummore » or in fact, could act as a sink for the pollutant.« less" @default.
- W85218149 created "2016-06-24" @default.
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- W85218149 date "1975-01-01" @default.
- W85218149 modified "2023-09-23" @default.
- W85218149 title "Effects of cadmium on forest trees" @default.
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