20.500.12556/RUL-129519 Possible time-dependent effect of ions and hydrophilic surfaces on the electrical conductivity of aqueous solutions The purpose of this work was to determine the influence of mechanical and electrical treatment on the electrical conductivity of aqueous solutions. Solutions were treated mechanically by iteration of two steps: 1:100 dilution and vigorous shaking. These two processes were repeated until extremely dilute solutions were obtained. For electrical treatment the solutions were exposed to strong electrical impulses. Effects of mechanical (as well as electrical) treatment could not be demonstrated using electrical conductivity measurements. However, significantly higher conductivity than those of the freshly prepared chemically analogous solutions was found in all aged solutions except for those samples stored frozen. The results surprisingly resemble a previously observed weak gel-like behavior in water stored in closed flasks. We suggest that ions and contact with hydrophilic glass surfaces could be the determinative conditions for the occurrence of this phenomenon. autothixotropy conductivity exclusion zone extremely dilute solutions water anorganska kemija fizikalna kemija molekule voda struktura vodne raztopine tekočine električna prevodnost hidrofobnost hidrofobne površine avtotiksotropija zelo razredčene raztopine šibki geli ioni true false true Angleški jezik Slovenski jezik Članek v reviji 2021-09-03 13:53:41 2021-09-03 13:53:42 2022-09-08 04:09:01 0000-00-00 00:00:00 2012 0 0 Str. 4048-4068 iss. 4 Vol. 13 2012 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 546.212:544.35:544.022.822 1661-6596 10.3390/ijms13044048 35901957 RAZ_Verdel_Nada_2012.pdf RAZ_Verdel_Nada_2012.pdf 1 655656A7AD211310D48B378F8EC86C9F 0db698603640c7d86eb7b51fd674d4951e9c6ad919bddbffc711dd84bbca2ea2 ad06069b-0caf-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146520 https://www.mdpi.com/1422-0067/13/4/4048 0 66b9e99d-0cae-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146519 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0