The healing properties of any mineral water and mud are determined primarily by their mineral composition, i.e. those organic and inorganic substances that are dissolved in them. However, their general physiochemical indexes are no less important. To this end, to date, only pH is used - a unit for measuring the activity of hydrogen ions in water, quantitatively expressing its acidity.
However, in our opinion, there are more important indicators that characterize the physiochemical properties of mineral waters and therapeutic muds, which are not taken into account when determining their quality. This is the oxidation-reduction or redox potential and the concentration of active hydrogen.
The main processes that ensure the vital activity of any living organism are the oxidation-reduction reactions, i.e., reactions that deal with the transfer or attachment of electrons. Substances that include atoms that attach electrons during the reaction are called oxidizers, and substances that transfer electrons are the reducing agents. The energy released during these, engages in maintaining homeostasis (vital activity of the body) and regenerating the body cells. One of the most significant factors in regulating the parameters of oxidation-reduction reactions occurring in any liquid medium is the activity of electrons or, in other words, the ORP of this environment (ORP). The redox potential is determined by the electrochemical method and is expressed in millivolts. The ORP values can be either positive or negative. Positive values are characteristic for a medium with oxidizing properties, and negative values for an environment with reducing properties.
Normally, the ORP of human blood (measured on a platinum electrode referred to a silver chloride electrode) ranges from -70 to -100 millivolts (mV), that is, the internal environments of the human body are in a restored state. According to World Health Organization, the drinking water should not exceed the ORP of + 40 mV. ORP of ordinary drinking water (tap water, bottled water, etc.), measured in the above manner, is usually greater than zero, and usually ranges from +200 to +300 mV. These differences in ORP of the internal environment of the human body and drinking water mean that the activity of electrons in the internal environment of the human body is much higher than the activity of electrons in drinking water.
When drinking water penetrates the human tissues (or other living creature) body, it takes the electrons away from cells and tissues. As a result, the biological structures of the body (cell membranes, cell organelles, nucleic acids and others) are subjected to oxidative destruction.
If the drinking water consumed by the body has an ORP close to the ORP value of the internal environment of the human body, then the electrical energy of the cell membranes (the body’s vital energy) is not consumed to correct the activity of water electrons and water is immediately absorbed because it has biological compatibility in this parameter.
If drinking water has a more negative ORP than the ORP of the internal environment of the body, it feeds it with this energy, which is used by cells as an energy reserve of the body’s antioxidant defense against adverse environmental influences.
Another significant and almost unexplored parameter is the index of active hydrogen or hydride-ion. What is it? H- is a physical system consisting of one proton and two electrons. In other words, it is a form of hydrogen, in which the atom has an extra electron, which gives it a negative charge. It acts as an antioxidant in various biological systems and is found in virtually all fresh, raw products of vegetal and animal origin. Moreover, it is the exact parameter that determines the negative redox potential of the fluids of our body.
There are not many natural water sources on planet Earth that have a negative redox potential and a corresponding concentration of active hydrogen. Among people living in such areas, a greater number of centenarians was noted.
Romania is a country famous for its balneology resorts. The country concentrates almost a third of all mineral wells discovered in Europe. Their healing properties have been known for centuries. It should be noted that in one location there might be several types of salt-rich natural water and therapeutic mud. Considering that the above parameters were not taken into account when determining the quality of mineral waters and therapeutic mud, it was curious to research the redox potential and the concentration of active hydrogen in some mineral springs and therapeutic muds from the rich, natural sources of the country.
Studies were carried out at four balneology resorts in Romania: Borsec, Covasna, Băile Tușnad, Techirghiol. The redox potential was measured on a portable instrument ORP-meter HI 98201 by HANNA (Germany); Active hydrogen - on a portable device TRUSTLEX ENH-1000 (Japan). The results of the studies are reflected in Table 1. The measurements were calculated directly from sources (wells) as per table below:
Table 1.
Oxidation-reduction potential (ORP) and active hydrogen indicators (H-) of mineral water in some balneology resorts in Romania
CITY NAME |
WELLS NAME |
WELLS № |
ORP (mV) |
H- (ppb) |
BORSEC |
Untitled |
3 |
-135 |
122 |
|
Untitled |
5 |
-150 |
170 |
|
Untitled |
6 |
-380 |
340 |
|
Untitled |
10 |
-175 |
130 |
|
Untitled |
11 |
+40 |
0 |
COVASNA |
Elvira |
Left |
-254 |
330 |
|
Elvira |
Right |
-238 |
280 |
|
Untitled |
Under the bridge |
-194 |
214 |
|
Untitled |
Montana st. |
-73 |
16 |
|
Untitled |
By the school |
-162 |
138 |
BĂILE TUȘNAD |
Untitled |
1 |
+135 |
0 |
|
Untitled |
3 |
+130 |
0 |
|
Untitled |
4 |
+111 |
0 |
Studies of the mineral water at Borsec resort showed the following: at sources No. 3, 5, 6, 10, the water had a negative ORP and a high percentage of active hydrogen. Moreover, the water at source 6 was almost 2 times higher in terms of its parameters, the indexes in sources 3, 5 and 10. Water in source 11, had a positive ORP, and active hydrogen was absent in ppb values. Similar good results for the indicators of ORP and active hydrogen were obtained at the sources of Covasna resort. However, at Băile Tușnad resort, the ORP in all three studied sources had positive values, and active hydrogen was absent in all of them.
Investigating the mineral composition of all the sources described above, we did not find any significant differences between the elements, the presence or absence of which could affect the hydrogen index and the ORP values.
A certain correlation was revealed between them when comparing the indicators of ORP and active hydrogen. The lower the ORP value, the higher the pH and vice versa.
The indicators of ORP and active hydrogen of local therapeutic mud and water from the lake were studied at Techirghiol resort. Studies have shown that the ORP of the water from the lake was +120 mV, H- = 0 ppb. ORP of mud = -693 mV, H- = 944 ppb. When mixing mud with water from the lake in certain percentages, the following results were obtained: 2% of the mud: ORP = -526 mV, H- = 546 ppb; 10% of mud: ORP = -463 mV, H- =338 ppb.
Investigating the ORP of therapeutic mud in different countries, it was found that they all had a negative ORP. This was due to the vital activity of certain microorganisms living in it. Moreover, the lower the ORP of mud, the more evident were its healing properties.
Conclusions. 1. Indicators of ORP and active hydrogen can serve as a new fast method for determining the quality of mineral waters and therapeutic mud;
2. A certain correlation was found between the ORP indicators and active hydrogen: the lower the ORP, the higher the hydrogen index.
3. Mineral waters with low ORP and high hydrogen index possess restorative, antioxidant properties and, respectively, have a greater therapeutic effect on the body.
4. The therapeutic effect of mud is determined by the values of its ORP and the index of hydrogen. The lower the ORP and the higher the hydrogen index, the better their therapeutic properties.