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    Wyświetlanie 1-4 z 4
    Tytuł:
    Effect of various organic fertilisers on the heavy metal fractions in the soil. Part 2. Chromium and cadmium
    Autorzy:
    Filipek-Mazur, B
    Gondek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1449480.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    chromium
    chemical extraction
    soil
    cadmium
    organic material
    soil property
    degraded ecosystem
    anthropogenic ecosystem
    organic fertilizer
    agricultural chemistry
    heavy metal
    Opis:
    The subject of the paper was to determine chromium and cadmium fractions in the soils treated with tannery organic materials. Methods, characteristics of experimental materials and the tested soils were presented in the first part of the paper. After four years of investigations soil samples were collected for the assessment of the total content of chromium and cadmium and their fractions. Results of a sequential chemical extraction confirmed literature data on the weak mobility of this metal in the soil. After application of the studied fertilisers, the share of the most mobile Cr fractions was slight. Iron oxides and residual fractions were most important for chromium accumulation. Cadmium mobility in the soil and its easy uptake by plants is related to a considerable share of mobile forms. A large share of mobile form was noticed in the analysed soils (54.5-68.3%). Exchangeable fraction bound smaller amounts of cadmium (6.8-13.2%). Similar amounts of cadmium were accumulated in the fractions bound to manganese oxides (8.5-19.6%). Organic matter did not contribute to this element binding and the amounts of cadmium stored in this fraction were 2.3-6.6%. Only very small amount of cadmium was accumulated in the form bound with the initial minerals.
    Źródło:
    Acta Agrophysica; 2001, 51; 209-214
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Balance of heavy metals [Cd, Ni, Pb] in static fertiliser experiments on grasslands
    Autorzy:
    Curylo, T
    Powiązania:
    https://bibliotekanauki.pl/articles/1448702.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    grassland
    long-term experiment
    balance
    soil
    meadow soil
    mineral fertilizer
    soil property
    degraded ecosystem
    anthropogenic ecosystem
    agricultural chemistry
    heavy metal
    Opis:
    On the basis of results obtained in 2 static experiments conducted on light and heavy soils with differentiated mineral fertilisation, an approximate balance of Cd, Ni and Pb was determined over 20 years of investigations. The experiments included 3 levels of fertilisers and the control plot. Ammonium nitrate, single or triple superhosphate and potassium salt were used for the treatments. Average amounts ofheavy metals introduced with the fertilisers in both experiments over twenty years were as follows: 37-110 g Cd, 63-195 g Ni and 62-202 g Pb ha-1. The balance ofheavy metals over twenty years assumed different values depending on the fertilisation level and soil conditions. However, irrespective of those factors, the balance assumes a negative value. The effect of nitrogen doses on the balance was slight and depended on the site trophicity. On the other hand, increasing doses of phosphorus and potassium treatment decreased the value of the negative balance difference of cadmium and, to a lesser degree, of nickel, but increased the lead balance.
    Źródło:
    Acta Agrophysica; 2001, 51; 189-199
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of various organic fertilisers on the heavy metal fractions in the soil. Part 1. Lead, copper and nickel
    Autorzy:
    Filipek-Mazur, B
    Mazur, K.
    Gondek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1449430.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    chemical extraction
    soil
    organic material
    soil property
    copper
    lead
    degraded ecosystem
    anthropogenic ecosystem
    nickel
    organic fertilizer
    agricultural chemistry
    heavy metal
    Opis:
    The present investigations aimed at determining the effect of various organic materials, i.e. farmyard manure (FYM), organic tannery sludge and compost of such sludge and peat on lead, copper and nickel fractions content in soil. Doses of peat compost and organic sludge were calculated according to the nitrogen amount per a FYM dose. After four years of experiment, fractions of Pb, Cu and Ni compounds were assessed in the soil from individual plots using the Zeien and Brummer's sequence chemical extraction method. Heavy metal contents were determined using a ICP-AES in JY 238 Ultrace apparatus. Lead accumulated mainly in the form bound with organic matter and with amorphic iron oxides. This metal distribution reveals its slight share in the mobile and exchangeable forms. Composts and sludge introduced into the soil did not affect any significant changes of the individual lead forms share as compared to FYM and NPK treated plots and the control. Some amount of copper occurred as mobile forms in all the soils. In the soil of all the treated plots, copper occurred mainly bound with organic matter and amorphic iron oxides. The basic share of nickel was found in the residual fraction bound with internal crystalline nets of initial elements. Beside the residual form, nickel was connected mainly with organic matter.
    Źródło:
    Acta Agrophysica; 2001, 51; 201-208
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microelement contents in arable soils of the Upper Silesia
    Autorzy:
    Jasiewicz, C
    Sendor, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1450107.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    manganese
    iron
    arable soil
    Upper Silesian region
    extraction
    microelement
    soil
    content
    soil property
    zinc
    copper
    degraded ecosystem
    anthropogenic ecosystem
    agricultural chemistry
    Opis:
    In the present paper arable soils of the Upper Silesia were evaluated as to copper, zinc, manganese and iron contents, determined in the same extract, i.e. 1 M dm-3 HCl. The studies comprised 20 points in the vicinity of Sosnowiec and 20 points from near Zawiercie. Soil abundance in the available forms of microelements was assessed on the basis of the limiting numbers suggested by the Institute of Soil Science and Plant Cultivation. Soils of Zawiercie and Sosnowiec belonged to those with high contents of zinc in all the cases; in the majority of objects these were the soils with medium contents of copper and manganese. In half of the cases, the soils were classified as possessing low iron content, and in the remaining half as having medium iron content.
    Źródło:
    Acta Agrophysica; 2001, 51; 231-235
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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