ORIGINAL RESEARCH
Simple Electrochemical Determination
of Hydrazine in Water
Lukas Lauko1, Roman Hudec1, Katarina Lenghartova2, Alena Manova1,
Frantisek Cacho1, Ernest Beinrohr1,2
1Institute of Analytical Chemistry, Faculty of Chemical and Food Technology,
Slovak University of Technology in Bratislava, Radlinskeho 9, 812 37 Bratislava, Slovakia
2Department of Chemistry, Faculty of Natural Sciences, University of SS. Cyril and Methodius in Trnava,
J. Herdu 2, 917 01 Trnava, Slovakia
Slovak University of Technology in Bratislava, Radlinskeho 9, 812 37 Bratislava, Slovakia
2Department of Chemistry, Faculty of Natural Sciences, University of SS. Cyril and Methodius in Trnava,
J. Herdu 2, 917 01 Trnava, Slovakia
Publication date: 2015-07-27
Submission date: 2015-03-02
Final revision date: 2015-03-23
Acceptance date: 2015-03-25
Pol. J. Environ. Stud. 2015;24(4):1659–1666
KEYWORDS
hydrazine determinationboiler waterconstant current chronopotentiometryporous electrodevitreous carbonporouselectrode
TOPICS
ABSTRACT
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.
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