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 techn...

In this paper we d~scuss the sultablllty of the cetyltrimethylammonium bromlde (CTAB) precipitation method for the determination of dissolved DNA (dDNA) In lake water. Factors affecting dDNA recovery from the precipitate and further DAPI fluorometr~c assay were also examined. The proposed method was particularly suitable for routine determination of dDNA concentration in low and moderately eutr...

Cellulose acetate fibers are commonly made by a dry-spinning process, in which cellulose acetate is firstly dissolved in acetone and then the cellulose acetate acetone solution is extruded through spinneret orifices that have extremely small diameters. Any insoluble substances in acetone solutions could cause disruptions in fiber extrusion, and are not tolerated. In this work, acetone-insoluble...

Dissolved Oxygen (DO) is one of the most important factors for aquatic animals as especially those who derive dissolved oxygen from water. DO levels indicate quality Many biotic and abiotic may influence concentration like mixing different water bodies, upwelling, atmospheric exchange, respiration, photosynthesis, ice cover, pollution some physical salinity temperature. The fluctuations in affe...