in situ measurement of bioavailable metal concentrations at the downstream on the morava river using transplanted aquatic mosses and dgt technique

this work summarized the results of a long term monitoring programme performed downstream on the morava river (czech republic). during this programme the total dissolved concentrations and bioavailable fraction of selected metals (zn, pb, ni, cu) were monitored. for the determination of bioavailable metals species, diffusive gradients in thin films technique (dgt) together with moss bags technique utilizing fontinalis antipyretica moss species were used. all of the measured metal concentrations were compared with an amount of accumulated mass by fontinalis antipyretica, represented as a concentration factor, cf. obtained results shown that further investigation of dgt technique and metal accumulation processes by fontinalis antipyretica is needed to conclude if the dgt technique is a good alternative for the biomonitoring technique using fontinalis antipyretica moss bags as a means to measure (bio)available metal concentrations in natural water. significant correlation with cf was found in the case of dgtzn and dgtpb concentrations. on the other site, accumulated mass of cu by fontinalis antipyretica correlated significantly with total dissolved concentration of cu. in the case of ni no correlation was found between total dissolved ni concentrations, dgtni concentration and cf of fontinalis antipyretica.