Hidrológiai Közlöny 1931 (11. évfolyam)
Gedeon Tihamér: Hidrológiai megfigyelések a Vértes-hegység délkeleti részéből
Chemical analysis of the waters of Cave Aggtelek. By Dr. Rezső Maucha. Six water samples taken by Dr. Enclre Dudich were analysed. Sample I. was taken of the Királykút well, II. of the brook Acheron at bridge number I., III. of the brook Styx under bridge 3., IV. of the water dropping to the stalagmite named „Kéregető Koldus", V. of the „Dessewffy kútja" well and finally the VI. of the brook flowing under the column named „Nádor oszlop". The analysis was made almost exclusively with the special methods of Prof. L. W. Winkler. 1 Tables I. and II. contain the results. The reductive capacity of the waters is given here in Winkler grades, i. e. the given numbers sign the cubic centimeters of a 1/100 N KM11O4 solution wanted to oxydate the organic matter contained by 100 cm 3 water. Alkalinity is given in Wartha grades, i. e. the cm 3 of a 1/10 N HCl solution wanted to the neutralisation of 100 era 3 water. Table II. contains the same data calculated as oxydes (according to the dualistic formulae of Berzelius). Reductive capacity is given here as the number of milligrams of oxygen wanted to oxydate the organic matter contained by 1 liter water. Also the data of total hardness, carbonate hardness and remaining hardness are given. As these data show Ca" ond HCO3" ions are dominating in these waters, their equivalent per cents moving between 72 — 94%, resp. 86.7—94.2%. Then Mg ion is following in the range of the kations. As for anions, hydrocarbonates, sulfates and very little chlorine was found. The different composition of the waters signs that they originate from different localities. The larger Mg content of the flowing waters proves that their water basin should be richer in Mg containing rocks than that of seepage waters. The analysed waters contained very little or no aggressive CO2 at all, especially the sample of Királykút which contained no free CO2 at all. This explains why a thin CaCÜ3 crust was formed on the water surface of Királykút. The air of the cave is always saturated with vapour as proved by measurements stated in the paper of Diulich. Therefore no
