Wyniki wyszukiwania

1

Rekultywacja i monitoring składowisk odpadów na przykładzie obiektu w Liniewskich Górach

100%

Smorzewska E.

Acta Scientiarum Polonorum. Administratio Locorum

|

2015

|

tom 14

|

nr 1

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Variations in the zinc and lead content in surface layers of urban soils in Kielce (Poland) with regard to land use

63%

Swiercz A., Smorzewska E.

Journal of Elementology

|

2015

|

tom 20

|

nr 2

The article presents an overview of the results of a study concerning the zinc and lead content in urban soils of Kielce with regard to different land use. 61 topsoil samples were collected in the industrial areas (I), urban green areas (Z), urban allotment gardens (O), as well as parks and forests (P). The maximum values for zinc and lead were observed in the industrial zone, i.e. 181.3 mg kg-1 and 112.6 mg kg-1, respectively; whereas the average content in the soils of Kielce oscillates at the level of 134.2 mg kg-1 for zinc and 92.85 mg kg-1 for lead. Geochemical indices, such as the geoaccumulation index (Igeo), contamination factor (CF) and accumulation index (AI) indicated that areas located in close proximity to the main roads of the city, especially in the city centre and the former industrial estate called Białogon, are characterised by the highest concentration of the analysed heavy metals. Generally, the enrichment of soils in zinc and lead decreases further from the city centre. In most cases, the content of the analysed heavy metals in surface layers of urban soils considerably exceeded values considered as geochemical background and valid legal norms of the Ordinance of the Minister of Environment on soil quality standards and land quality standards (Journal of Laws of 2002, No. 165, item 1359). The exceeded values of the analysed metals are caused mainly by deposition of contamination from car exhaust emissions and broadly defined industry.

3

Possible use of halloysite in phytoremediation of soils contaminated with heavy metals

51%

Swiercz A., Smorzewska E., Slomkiewicz P., Suchanek G.

Journal of Elementology

|

2016

|

tom 21

|

nr 2

The impact of adding a natural clay sorbent such as halloysite on the content of selected heavy metals in the biomass of common orchardgrass (Dactylis glomerata L.) was studied in a pot experiment. The study was conducted on mucky soil enriched anthropogenically with heavy metals, whose values exceeded permissible standards of soil quality and values of the geological background. The experiment included three variants with differentiated percentage of halloysite, i.e. 10%, 30% and 50%, as well as two control cultivations. The results confirm the impact of halloysite on the physicochemical properties of soil, consisting in increased soil pH and sorption capacity. Addition of halloysite to soil also differentiated the quantity of crop yield and concentration of heavy metals in the plant and soil. Halloysite was found to have an inconsistent impact on the concentration of heavy metals in the biomass of common orchardgrass, which was proven by some elevation in the level of heavy metals and a higher bioaccumulation factor (BAF). Halloysite constituting 50% of the mass of substrate substantially increased the consumption of Pb and reduced the sorption of Cr. Addition of halloysite stabilised Zn and Cu in soil. The results of our preliminary investigation indicate that addition of halloysite to soils with excessive concentrations of heavy metals influences the level of soil sorption to the extent which may be effective for soil remediation.

Ograniczanie wyników

2 Journal of Elementology

1 Acta Scientiarum Polonorum. Administratio Locorum

3 Smorzewska E.

2 Swiercz A.

1 Slomkiewicz P.

1 Suchanek G.

1 2016

2 2015

Rekultywacja i monitoring składowisk odpadów na przykładzie obiektu w Liniewskich Górach

Variations in the zinc and lead content in surface layers of urban soils in Kielce (Poland) with regard to land use

Possible use of halloysite in phytoremediation of soils contaminated with heavy metals