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Preliminary assessment of agriculture influence on heavy metal content in bottom sediments of small water reservoirs and in rushes

100%

Szydłowski K. , Podlasińska J.

tom nr III/1

949--962

The main purpose of the paper was to determine the influence of catchment management on the bottom sediments quality of small water reservoirs as well as to determine toxic metal content in rushes. Samples of bottom sediments were collected in winter 2013 year, form 4 sediment layers (0-5, 5-10, 10-20 and 20-30 cm) at three points along the body of water. The 48 samples were collected. Soil material was prepared according to the procedures used in soil science, the analysis was performed for the fraction with a particle diameter of less than 1 mm. Plant samples from single species aggregations were randomly cut from 5 to 10 locations of 20-50 m2 area. From these samples the average composite sample was prepared. The total content of such elements as Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn was determined by atomic absorption spectrometry (using the Thermo Scientific iCE 3000 series spectrometer) after prior digestion in the mixture (5:1) of concentrated acids HNO3 (65%) and HClO4 (60%). Total Hg content was determined by the AMA 254 analyzer. Between the small water reservoirs adjacent to the areas where organic farming is used, and the reservoirs adjacent to the areas with mineral fertilization there are statistically significant differences in the concentrations of such metals as nickel (layers: 0-5, 5-10, 10-20 and 0-30 cm), as well as cobalt, chromium and iron (in a layer 5-10 cm). It has been found that some plants accumulate higher amounts of heavy metals (average values). Based on obtained results it can be stated that rushes actively captures large amounts of elements reaching studied objects and thereby protect the surface water of the reservoirs from contamination.

Zanieczyszczenie wybranymi metalami ciężkimi gleb przyległych do obwodnic Stargardu (S10) oraz Nowogardu (S6)

80%

Szydłowski K. , Mielczarek M. , Podlasińska J.

tom Vol. 18, nr 3

253--260

Badaniom poddano dwie drogi szybkiego ruchu: S6 – obwodnica miasta Nowogard oraz S10 – obwodnica miasta Stargard. Próbki gleby pobierano z warstwy 0–30 cm z bezpośredniego otoczenia jezdni (do 1 m od jezdni) – D oraz pobrano próbki w odległości do 20 m od brzegu jezdni– K z miejsc wcześniej ustalonych. W pobranych próbkach oznaczono za pomocą absorpcji atomowej ASA oznaczono: Cd, Co, Cr, Cu, Ni, Pb, Zn. Na podstawie analiz chemicznych stwierdza się, iż analizowane próbki z badanych obwodnic charakteryzują się zróżnicowanymi średnimi stężeniami zawartości badanych metali ciężkich w zależności od miejsca poboru. Uzyskane stężenia wszystkich wybranych metali ciężkich charakteryzują się brakiem przekroczeń wartości granicznych zawartych w Rozporządzeniu Ministra Środowiska z dnia 9 września 2002 r. w sprawie standardów jakości gleby oraz standardów jakości ziemi [Dz.U. Nr 165 poz. 1359] dla terenów przemysłowych, użytków kopalnych oraz dla ciągów komunikacyjnych.

In the following article, two two-lane expressways were studied: S6 – bypass of Nowogard and S10 – bypass of Stargard, both located in Western Pomerania, Poland. Soil samples were taken from 0–30 cm deep layer from direct surrounding of a roadway (up to 1 meter) – D, as well as in a 20 meter distance from a roadway – K, in previously set places. In taken samples, the concentrations of Cd, Co, Cr, Cu, Ni, Pb, Zn are evaluated. Based on the chemical analysis, it has been shown that analysed soil samples from studied by-passes are characterized by diversified average concentrations of heavy metals, depending on the place of sampling. However, none of the concentrations of chosen heavy metals have exceeded threshold values, according to Regulation of the Minister of Environment dated 09 September 2002 on soil quality standards and quality standards of soil (Journal of Laws 2002 No 165, item 1359) for industrial areas, mining grounds and transportation areas.