Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 13. 1987. (Budapest, 1987)
Soil samples in the investigated area contain 1 000-4 000 ppm, mostly 2 500 ppm titanium, slightly above average. It shows even distribution in the profiles. Vana^i_um_ Vanadium content of the soils ranges from trace quantities to 400 ppm, in the temperate climatic zone from 75 to 150 ppm. The investigated area is characterized by 16-160 ppm vanadium content, mostly 60-100 ppm. Vanadium concentrations in the soil profiles change arbitrarily: it may show even distribution (like in profile 28), it may increase with depth (profile 29), or decrease with depth (profiles 26 and 27), and irregular distribution was observed in profiles 24 and 25. Barium Barium content of the soils ranges from 100 to 3 000 ppm, in temperate zone soils 150400 ppm. In the investigated area 100-600 ppm barium was shown by spectrometry, mostly within the 160-400 ppm interval. In the profiles Ba-content correlates with carbonate content: where there is much carbonate, there the barium concentration increases. It occurs mostly in level B. Stj-ontiuni Strontium content of the soils ranges from 50 to 1 000 ppm, in temperate climate zones from 50 to 300 ppm. In the investigated area analytical results range from the sensitivity limit to 2 000 ppm, but range mostly in the 100-400 ppm interval. Strontium reaches its maximal concentration in levels rich in carbonates, like barium. In profiles with low carbonate content it does not reach the sensitivity limit of the method, but in high carbonate content sections of profiles the strontium concentration may reach significant values. Boron Boron content of the soils may range from 1-2 ppm up to 2 50-270 ppm, in the temperate climate zone mostly 5-100 ppm. Our area contains 25-80 ppm B, mostly 40-60 ppm, B may show near even distribution in different profiles, except profile 28, where B concentration showed wide range distribution. Summarizing our results we can say that trace element concentrations determined by optical emission spectrometry do not show significant differences from the average values characteristic for temperate climate soils. Exception is Ga, showing less than average concentrations and Ti, showing higher than average concentrations. Concentration of trace elements is more or less similar in each locality, except at Nagyház-tanya (profile 25) and Potornya-tanya (profile 29), where concentrations are slightly higher than the average values. Atomic absorption spectrophotometry Total Mn, Zn, Cu, Pb, Cd concentrations of selected soil samples and soluble Mn, Zn, Cu, Pb and Cd concentrations of all soil samples were determined by atomic absorption spectrophotometry. Pr epa r ation_of J he_ sa napi es_ 1. To determine total concentrations of elements. Air-dry soil samples were pulverized in achate ball-mill, dried in exsiccator at a temperature of 10 5°C until no weight loss could be observed. 0. 4000 g of the dry substance was heated in 15 ml acid over water-bath until no smell could be observed. (Acid: 150 ml ce. HCIO4 and 500 ml ce. H2F2). The solution was washed into a 100 ml flask and filled up to 100 ml with three times distilled water. 2. To determine soluble trace elements. Soil samples were dried in exsiccator at a temperature of 10 5°C until no weight loss could be observed. Seventy-five ml EDTA (ethylene-diamine-tetra-acetic acid) was added to 15 g dried soil. The pH was fixed at 7, and the solution agitated for 1 hour. After 20 minutes of centrifuging the solution was decanted, filtered and stored in a plastic bottle. (EDTA solution: 104. 64 g EDTA in 5 litres three times distilled water. )
