Wyniki wyszukiwania - BazTech

1

Utilization of poultry droppings in mineral-organic fertilizers

Hoffmann K., Lewandowska B., Borowiec M., Hoffmann J.

Polish Journal of Chemical Technology

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2007

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Vol. 9, nr 3

12-14

EN

The results of physicochemical analyses of raw and composted turkey droppings and those of germination tests carried out using the droppings are presented. On the basis of the results formulas for microelement mineral-organic fertilizers have been developed and fertilizer rates have been determined for winter wheat.

2

The guano of bats - studies on the fertilizer application

Hoffmann K., Hoffmann J., Lewandowska B.

Polish Journal of Chemical Technology

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2004

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Vol. 6, nr 4

22-25

EN

In the frame of the studies on the application of the guano of the bats, the physicochemical composition of the guano was determined, followed by the plants germination tests in order to assess the optimal dosage of guano. The composition of the mineral-organic fertilizers was proposed in which one of the components was the guano of bats. The analytical studies of the fertilizer composition showed very high applicability of this solution in the fertilizers production.

3

Electrolytic preconcentration of platinum for electrothermal atomic absorption spectrometry using a flow-through graphite tube cell

Matusiewicz H., Lesiński M., Ciszewski A., Lewandowska B.

Chemia Analityczna

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2001

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Vol. 46, No. 2

199-205

EN

An electrodeposition method in a flow-through graphite tube cell coupled to an electrothermal atomic absorption spectrometer was developed for the preconcentration and determination of platinum. A flow system incorporating a three-electrode arrangement for this preconcentration was constructed. After the deposition step, the graphite tube was placed into the graphite furnace and an atomization program was applied. The utility of the proposed procedure was checked with the analysis of a series of samples in the range of platinum concentration from 0.1 to 10 ng ml (-1) for 30 min deposition.

PL

Zastosowano technikę elektrolitycznego zatężania na elektrodzie grafitowej w układzie przepływowym do zatężania i oznaczania platyny metodą absorpcyjnej spektrometrii atomowej z atomizacją elektrotermiczną. Skonstruowano, w celu zatężania, system przepływowy składający się z układu trójelektrodowego. Po etapie zatężania, elektroda grafitowa była stosowana jako piec grafitowy w procesie atomizacji. Przydatność zaproponowanej metody sprawdzono analizując próbki zawierające platynę w zakresie od 0. l do 10 ng m(-1) stosując 30 min zatężanie.