We measure most heavy metal contaminants using XRF from bulk sediments, but mercury (Hg) is measured in an atomic fluorescence spectrometer.

Spheroidal carbonaceous particles that reflect the exposure of a lake to air pollutants from industrial fossil-fuel burning are counted using light microscopy after laboratory removal of carbonates, silicates and labile organic matter. Measurements of Persistent Organic Pollutants (POPs) are conducted by agreement with external laboratories. As the history of these contaminants is well known we can use their concentration profiles in sediments as an auxiliary dating technique.