This paper is the first of a series of new researches on the NaCl aerosols, which includes the bibliographical analysis and synthesis regarding the structure, the form and the sizes of the particles of the NaCl aeroions in correlation with the production procedures. There are also analyzed some practical applications pointed out both by some ancient Greek and Roman texts and by the presentday literature; at the same time there is underlined the existence, even from Antiquity, of an ethnoscience which led to the current knowledge in the halotherapy field. Concerning the artificial sources of the aerosols employed in the multiple-usage halochambers, there have been taken into consideration the most well-known procedures which are based on the mechanical separation or erosion, followed by the physical dispersion in the atmosphere; on the breaking of the gas bubbles in the sparging with air or other inert gases by means of the supersaturated saline solutions; on the atomization of the saturated saline solutions in the vacuum centrifugal air separators and the carrying-away of the superficial particles resulted from solvolyses and the consecutive anhydrizations of the structures from the surface of the halite blocks. These procedures will be included in the subsequent research.

Saline aerosols resulted from natural or artificial sources are used for therapeutic environments. The paper presents the influence of the NaCl aerosols resulted in situ in dynamic halochambers, by structural reformation of saline aerosols in the presence of pentahydrol, on the increase in weight and height of children, as a result of systemically controlled practice of team and individual physical education games, with subjects of ages from 10 to 15. For reference, we used children of the same age and with the same physical education program, but whose activities were performed in open spaces, or in gym classrooms, without saline aerosols. Our study emphasized the fact that the NaCl aerosols formed in situ, in the atmosphere of the halochamber, at a rate of over 0.600 mg/m(3) of saline aerosols, enhanced the growth and weight gain at a higher rate in girls than in boys and at an obviously higher rate than that reported in the children who performed physical exercises in normal conditions, over a period of 3 years. All the data were statistically processed in order to evaluate the influence of the aerosols. The study reports the therapeutic benefits of salt exposure in children's development.

The paper presents the influence of physically doping NaCl grains with 0.5% KCl, KI, MgCl 2 and CaCl 2 on the release of negative aerosols/solions in dynamic halochambers. The salts used for doping were chosen according to the current procedures to obtain therapeutic and ambient mediums in aerosols with a negative charge based on NaCl. The aerosols were released by pumping an airflow of 1.8 L/min through a cartridge containing 60g of porous granules, with diameters between 4.0 and 6.6 mm, which were obtained by extruding dispersions of aqueous pasty-damp, saline solutions. We used an optical particle counter and a micro-chamber, divided into 10 equal rooms and with a zigzagged airflow delimited into three areas in each room. The upper side was fitted with several injectors to be coupled to the particle counter. Using this device we studied the aerosol emission dynamics over time, by keeping the temperature and humidity in normal conditions, as in the atmospheric air. Based on the evolution of the saline particles, which were divided into two stable groups in the air, namely gaseous microdispersions and gigantic dispersions, we evaluated their concentrations over time, by keeping the airflow that was pumped into the capsule constant. We thus determined the emission ratio over time and the lifespan of the solions in the three areas, over the halochamber functioning period and after the emission ceased. Aerosol/solion generation involves different sets of laws, based on the nature of the doping salt and the conditions in the environment. Therefore, one may select the doping conditions for the aerosol/solion generation granules and the optimal dynamic halochamber functioning time, for use with preventive, therapeutic, or physical performance enhancing applications.

This study presents the correlation between the characteristics of some new artificial surface halochambers with multiple users, which concern several latest inventions of its authors, and the lifespan evolution of the NaCl solions, under static and dynamic conditions. The study aims at evaluating the aerosol concentration using corroborated data from the laser particle counter, type SIBATA GT 321, and the differential conductometry method, under three operating modes of halochambers: after 240 h after its being set to operation (static duty), after 48 h of ventilation with warm air (dynamic operating duty) and after other 24 h after ventilation end (static operation duty). These halochambers generate NaCl solions implying for physical dispersion into the atmosphere of the nanostructures from the surface parallelipipedic blocks or micro-crystals obtained by the recrystallized NaCl and from rock salt, by the erosion process and taking over of micro-crystals by conventional aerial currents under static conditions and by vent blowers under dynamic conditions. The aerosol level obtained by these halochambers is higher to that presented by the literature for salt mines and dynamic devices for aerosols.