- Pilegaard K.
- Environmental Pollution
- 17: 81-92
The epiphytic lichen Lecanora conizaeoides was used as a monitor organism of
airborne metals around an industrial area (a steelworks and an iron foundry) at
Frederiksvaerk, Denmark. Ca, Cd, Cr, Cu, Fe, Mg, Mn, Ni, Pb, V and Zn
were determined by atomic absorption spectrophotometry and K and Na by flame
emission techniques. SO 2 air pollution levels were estimated by the distribution of
lichen species with different SO 2 sensitivities.
A similar regional variation was found within the Frederiksvaerk area of
concentrations of the heavy metals Cd, Cr, Cu, Fe, Mn, Ni, Pb, V and Zn, showing
increasing concentrations in Lecanora conizaeoides towards the pollution sources.
The order of the maximum enrichment factors was: Cd74, Pb 62, Cu 35, Cr 34, V 31,
Fe 28, Mn 28, Zn 26 and Ni 9.
The air pollution in the area results in elevated concentrations of heavy metals in
Lecanora conizaeoides within a radius of at least 3 km from the industrial area.
- Wednesday, 24 February 2010 09:06