Wyniki wyszukiwania

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Determination of antimony in soil samples by flow-through stripping chronopotentiometry with a microporous mercury-film electrode

100%

Manova A., Strelec M., Beinrohr E.

Polish Journal of Environmental Studies

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2007

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tom 16

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nr 4

607-611

Flow-through stripping chronopotentiometry was used for the determination of antimony in soil samples. Antimony was deposited in potentiostatic mode on a glassy carbon porous electrode coated with Nafion® and mercury and then stripped with constant current. The accuracy of the results was confirmed by graphite furnace atomic absorption spectrometry. The LOD and LOQ were found to be 0.6 ^g dm-3 and 1.7 ^g dm-3, respectively. A linear response range was observed in the concentration range of 1 to 200 ^g dm-3 for sample volumes of 4 ml. The repeatability and reproducibility were found to be 2.9% and 5.2%, respectively.

2

Preconcentration of Hg in waters for ET AAS in a flow-through electrochemical cell

76%

Manova A., Cacho F., Beinrohr E., Rusko M., Kollar V., Kotovicova J., Vaverkova M.

Polish Journal of Environmental Studies

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2012

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tom 21

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nr 5

Mercury in water samples was determined by graphite furnace atomic absorption spectrometry after the preconcentration of Hg(II) on a gold working electrode in a flow system coupled on-line to the AAS instrument. The porous electrode is made of glassy carbon particles coated with gold. Tap, river, and wastewater samples were analyzed using this method. The method enables us to determine Hg in the concentration range of 0.05 to 60 µg∙dm⁻³.

3

Simple electrochemical determination of hydrazine in water

76%

Lauko L., Hudec R., Lenghartova K., Manova A., Cacho F., Beinrohr E.

Polish Journal of Environmental Studies

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2015

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tom 24

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nr 4

Hydrazine in water samples is determined by constant current chronopotentiometry in porous carbon electrodes. Hydrazine in alkaline solutions is oxidised to nitrogen in the pores of the electrode by constant current. Two types of electrodes made of reticulated vitreous carbon (RVC) were used, one fabricated from crushed RVC particles, the other with the original RVC material of 100 ppi porosity. The former is suitable for hydrazine concentrations above 0.7 mg·dm⁻³ up to 50 mg·dm⁻³, the latter for the 8-700 µg·dm⁻³ range. The method was used for water samples, including boiler water.

Ograniczanie wyników

3 Polish Journal of Environmental Studies

3 Beinrohr E.

3 Manova A.

2 Cacho F.

1 Hudec R.

1 Kollar V.

1 Kotovicova J.

1 Lauko L.

1 Lenghartova K.

1 Rusko M.

1 Strelec M.

1 Vaverkova M.

1 2015

1 2012

1 2007

Determination of antimony in soil samples by flow-through stripping chronopotentiometry with a microporous mercury-film electrode

Preconcentration of Hg in waters for ET AAS in a flow-through electrochemical cell

Simple electrochemical determination of hydrazine in water