Radiocarbon (14C) Concentration of Local Pollution in Street Trees Located at Intersections

2018-03-13T13:46:36Z (GMT) by Daisuke Ogawa
<p>At large intersections, vehicles consume and generate a large amount of fossil fuel. Carbon derived from fossil fuels that do not contain radioactive carbon (<sup>14</sup>C), i.e., dead carbon, is released in large amounts in the roadside air environment. By means of photosynthesis, street trees along the roadside assimilate both dead carbon, not containing radioactive carbon (<sup>14</sup>C), and contemporary carbon, which includes radioactive carbon (<sup>14</sup>C). Therefore, the concentration of radioactive carbon (<sup>14</sup>C) in leaves of trees growing in heavily polluted environments decreases. </p>