Evaluation of Quality of Bottom Sediments of Water Reservoir Poraj by Applying Sediment Quality Guidelines and Spiatal Analysis
Published Online: Apr 04, 2019
Page range: 141 - 147
Received: Jan 03, 2018
Accepted: Apr 19, 2018
DOI: https://doi.org/10.21307/acee-2018-032
Keywords
© 2018 Katarzyna Rozpondek et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
The aim of this study was to evaluate the quality of bottom sediments of water reservoir Poraj by applying a set of sediment quality guidelines (SQGs) and a spatial analysis. Samples of bottom sediments were collected at 46 measuring points. Collected samples were analyzed in terms of total trace element content, toxicity and organic matter. Concentrations of three trace elementss were above PEC value: Zn (22% of samples), Pb (17%) and Cd (17%). Considering mean PECQ value, 17% of samples were predicted to be toxic. For TEC value, 76% of bottom sediments samples were predicted to be non-toxic. Values of PECQ ranged from 0.04 to 2.08 with mean of 0.38. PERI from 4.36 to 323.62 with mean of 55.35. PERI above 150 was observed in 17% of collected samples. The Coefficient of determination were determined between studied factors: PERI and PECQ (R2= 0.98), PECQ and TEC (R2= 0.99), PERI and TEC (R2= 0.98), PERI and PE (R2= 0.06), PECQ and PE (R2= 0.07). Low correlation between toxic effect and PERI or PECQ indicated that there are other factors that contribute to the toxicity of the sediments. Spatial analysis performed in geostatistical software allowed determining areas with the highest ecological risk.
Streszczenie
Celem badań była ocena jakości osadów dennych zbiornika wodnego Poraj z zastosowaniem wytycznych dotyczących jakości osadów (ang. SQGs –