Abstract
The capacity of Hylocomium splendens to sorb heavy metal ions from dilute solutions was studied. The sorption and retention generally followed the order: Cu, Pb > Ni > Co > Zn, Mn. This order proved valid within a wide range of concentrations and independently whether the ions were supplied in pure or mixed solutions. The capacity of the moss tissues to sorb traces of Cu and Pb in the presence of comparatively large amounts of Ca, K, Mg, and Na was found to be very great. This makes it probable that these ions, supplied with the precipitation, are almost quantitatively sorbed by the moss carpets. A large share of Ni when present in precipitation, will also possibly be sorbed. A natural carpet of Hylocomium splendens showed a continuous uptake of Mn, Fe, and Ca from young to old tissues, whereas the increase in the concentrations of minor heavy metals was balanced by the dry matter decrease through decomposition. The developing and mature mor layer below the moss carpet had not enriched heavy metals above the concentrations of the old moss tissues.
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