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Acta Horticulturae et Regiotecturae

The Scientific Journal for Horticulture, Landscape Engineering and Architecture

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1338-5259
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Changes in Concentrations of Monovalent Basic Cations in the Water of the Čaradice Stream / Zmeny Koncentrácií Jednomocných Bázických Katiónov vo vode Vodného toku Čaradický Potok

Jaroslav Noskovič
  • Corresponding author
  • Slovak University of Agriculture in Nitra, Slovak Republic
  • Email:
/ Eva Candráková
  • Slovak University of Agriculture in Nitra, Slovak Republic
/ Mária Babošová
  • Slovak University of Agriculture in Nitra, Slovak Republic
/ Jana Porhajašová
  • Slovak University of Agriculture in Nitra, Slovak Republic
Published Online: 2013-09-06 | DOI: https://doi.org/10.2478/ahr-2013-0002

Abstract

In the years 2005-2010, the changes in concentrations of monovalent basic cations in the Čaradice Stream were evaluated depending on the time and place of sampling in its longitudinal profile. Results show that the average concentration of Na+ in the whole period was 14.75 mg. dm-3. Its share in the total amount of monovalent basic cations of Na+ and K+ in the whole reference period was 76.32%. The mass ratio of Na+ : K+ in the whole period was 3.34 : 1. Depending on the time of sampling, the lowest average sodium concentrations of the whole period were recorded in the spring season with the minimum average in March. The highest average concentration of the whole reference period was recorded in September. Depending on the sampling site, the minimum average concentration was recorded in a forest ecosystem and an ecosystem of permanent grassland, and the maximum average concentration in the village Kozarovce. Using the analysis of variance, we detected a statistically significant effect of all three qualitative factors (year, month and place of sampling) on the change of concentration. According to the Regulation of the Government of the Slovak Republic No. 269/2010 Coll., the 90th percentile values of this indicator are lower than the recommended value. The average concentration of potassium in the whole reference period was 4.54 mg. dm-3. The share of K+ in the total amount of monovalent basic cations in the whole period reached 23.68%. The lowest average concentrations of the whole period were usually found in the spring season, with the minimum value in March. The maximum average concentration of the whole reference period was recorded in July. Similarly to Na+, the lowest average concentration of K+ was detected in a forest ecosystem and the highest one in the village Kozarovce. The effect of seasonality on the dynamics of Na+ and K+ concentrations during the period was not detected. Using the analysis of variance, we found a statistically significant effect of all three qualitative factors (year, month and place of sampling) on the change of concentration. In the Regulation of the Government of the Slovak Republic No. 269/2010 Coll., the recommended value for potassium is not specified. The discharge rate significantly affected the changes in concentrations of Na+ and K+ in the stream.

Súhrn

V rokoch 2005 - 2010 sa hodnotili zmeny koncentracie jednomocnych bazickych kationov vo vodnom toku Čaradicky potok v zavislosti od času a miesta odberu v jeho pozdĺžnom profile. Z vysledkov vyplyva, že priemerna koncentracia Na+ za cele sledovane obdobie bola 14,75 mg.dm-3. Jeho podiel na celkovej sume jednomocnych bazickych kationov Na+ + K+ za cele sledovane obdobie reprezentoval 76,32 %. Hmotnostny pomer Na+ : K+ za cele sledovane obdobie bol 3,34 : 1. v zavislosti od času odberu sa najnižšie priemerne koncentracie Na+ za cele pokusne obdobie zaznamenali v jarnom obdobi, s minimalnou priemernou hodnotou v mesiaci marec. Najvyššia priemerna koncentracia za cele sledovane obdobie sa zistila v mesiaci september. v zavislosti od miesta odberu sa jeho minimalna priemerna koncentracia zistila pod lesnym ekosystemom a ekosystemom trvalych travnych porastov, maximalna pod obcou Kozarovce. Analyzou rozptylu sa zistil štatisticky vyznamny vplyv všetkych troch kvalitativnych faktorov (rok, mesiac a miesto odberu) na zmenu jeho koncentracie. Podľa nariadenia vlady SR č. 269/2010 Z. z., hodnoty 90-teho percentilu tohto ukazovateľa su nižšie ako odporučana hodnota. Priemerna koncentracia draslika za cele sledovane obdobie bola 4,54 mg. dm-3. Podiel K+ na celkovej sume jednomocnych bazickych kationov za cele sledovane obdobie reprezentoval 23,68 %. Najnižšie priemerne koncentracie za cele sledovane obdobie sa zistili spravidla v jarnom obdobi, s minimalnou hodnotou v mesiaci marec. Maximalna priemerna koncentracia za cele sledovane obdobie bola v mesiaci jul. Podobne ako pri Na+, najnižšia priemerna koncentracia K+ sa zistila v lesnom ekosysteme a najvyššia pod obcou Kozarovce. Sezonna zakonitosť dynamiky koncentracie Na+ a K+ sa v priebehu sledovaneho obdobia neprejavila. Analyzou rozptylu sa zistil štatisticky vyznamny vplyv všetkych troch kvalitativnych faktorov (rok, mesiac a miesto odberu) na zmenu ich koncentracie. V nariadeni vlady SR č. 269/2010 Z. z. pre draslik nie je odporučana hodnota uvedena. Na zmeny koncentracie Na+ a K+ vo vodnom toku vyrazne participoval prietok vody.

Keywords : stream; monovalent basic cations; sodium; potassium

Kľúčové slová : vodny tok; jednomocne bazicke kationy; sodik; draslik

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About the article

Published Online: 2013-09-06

Published in Print: 2013-09-01


Citation Information: Acta Horticulturae et Regiotectuare, ISSN (Online) 1338-5259, DOI: https://doi.org/10.2478/ahr-2013-0002.

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