Cyanobacterial blooms in kaliski region water reservoirs and water quality parameters / Zakwity sinicowe w zbiornikach okolic Kalisza a wskaźniki jakości wody

Abstract

Cyanobacterial blooms occur frequently in artifi cial lakes, especially in water reservoirs with small retention exposition to anthropopressure. The abundant occurrence of cyanobacteria is accompanied by danger of oxygen imbalance in the aquatic environment and the secretion of toxins that are possible threat to human health and life. Cyanobacterial cell growth depends on a number of physical (temperature, light exposure), chemical (pH, concentration of compounds containing nitrogen and phosphorus) and biological (the presence of other organisms) factors. This paper presents the results of the analysis of water from reservoirs located in southern Wielkopolska region (Pokrzywnica-Szałe, Gołuchów and Piaski-Szczygliczka). Some important physico-chemical parameters of water samples taken from investigated reservoirs as well as cyanotoxins concentration were determined. Furthermore, the cyanobacterial species were identifi ed. There was also an attempt made to correlate the water parameters with the cyanobacteria development and cyanotoxins production. On the basis of the results obtained in the analyzed season, it can be concluded that water from Pokrzywnica and Gołuchów reservoirs was rich in nutrients, hence the intense cyanobacterial blooms and cyanotoxins in water were observed.Brought to you by | MIT Libraries Authenticated Download Date | 5/12/18 1:34 PM

Investigation on silver complexes of novel 1,2,3-triazole linked crown ethers by NMR analysis

“…[6][7][8][9] The main goal of research in the field of macrocyclic systems is to investigate their properties and potential application in molecular recognition, complexation, catalysis, analysis and construction the modified electrodes, etc. [10][11][12][13][14][15][16] All of the investigated ligands possess several structural units which can potentially take part in binding of metal cations: oxygen atom donors in polyether crown skeleton, sulfur atoms as soft donors as well as the endocyclic nitrogen atoms of 1,2,3-triazole rings incorporated into the macrocyclic structure. Due to the presence of such different binding sites, these ligands should interact with cations to form stable complexes with alkali metals and alkaline earth metals as well as transition metals.…”