Journal of Thermal Analysis and Calorimetry

, Volume 111, Issue 1, pp 815–821 | Cite as

Calorimetric and conductometric titrations of nanostructures of water molecules in iteratively filtered water



This work continue the study of the physico-chemical properties of samples of pure, twice distilled water, when subject to a procedure of iterative filtrations through Pyrex glass filters (Büchner funnels). After the filtrations, electrical conductivity and heat of mixing with NaOH and HCl solutions increase. The hypothesis is that the iterative filtration procedure, that involves a flux of energy and material in an open system, is able to induce the formation of “dissipative structures” or nanostructures of water molecules (WNS). Water exhibits an extraordinary auto-organization potentiality triggered by several kinds of perturbations, including mechanical ones. We measured the heats of mixing of acid or basic solutions with such iterated filtered waters (IFW) and their electrical conductivity, comparing with the analogous heats of mixing, electrical conductivity of the solvent. We found some relevant exothermic excess heats of mixing and higher conductivity than those of the untreated solvent. The heats of mixing and electrical conductivity of IFW show a good correlation, underlining a single cause for the behavior of the samples.


Pure water IFW Calorimetry Conductometry Dissipative structures Aqueous nanostructures Filtration 



The study was financed by a grant from Laboratories Boiron. The authors wish to thank Dr. Silvia Nencioni and Dr. Luigi Marrari for their advice and cooperation.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  1. 1.Department of Chemistry, University “Federico II” of NaplesComplesso Universitario di Monte S’AngeloNaplesItaly

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