engleski

Toxicity on Water Flea Daphnia Magna on Drinking Water Pretreated by Products based on „Hydronic“ Technology

An increasing number of people with chronic illness who lack sufficient technical education to distinguish udoscience from science when these two are closely interwined, use revitalised water produced based on "hydronic" inology. The inventor claims that "revitalization" of drinking water occurs if water is kept in the glass that was osed to bombing with concerted information by means of an "orgon" transmitter. Once memorised it has a permanent ct of "vivification of dead water" due to shifts in the water molecular structure. As a crucial scientific proof results of urn test that have shown an average 40% reduction of the total negative effects and toxicity of all substances that end rater are cited. Unfortunately, the "hydronic" technology is not clearly documented and the explanations of its :acy are not in conformance with generally accepted scientific notions. The aim was to assess the reduction of ntial toxic effects of "revitalized" water on simple aquatic organisms. The culture of Daphnia magna Straus was used in the study. During the test, Daphnia magna were kept in the , at a temperature of 20+2 °C and deprived of food for 48 h. The number of motile daphnia was monitored every 24 xygen concentration in test tubes was measured immediately upon counting immobile animals. Dissolved oxygen measured by use of oxygen electrode (WTW Model OXI 3000). At the end of 48-h testing, the percentage of obility was calculated for each sample relative to the total number of Daphnia magna used. The 48-h EC50 was determined by an appropriate statistical method (logit analysis). Testing was performed on three types of water samples: tap water, bottled natural water and surface lake water. All tests were repeated in quadruplicate. All samples were kept in "informed glass" under daylight laboratory conditions for 8 h before testing on Daphnia magna. For each sample single blinded control was prepared using the ordinary drinking glass under same conditions. Contrary to the manufacturer claims, in all water samples treated with the "hydronic technology" there was a 100% mortality of test organisms after 24 h, with the 48h EC50 is zero and with statistical significance (PO.Ol) compared with the control group in which the survival of organisms after 24/48h amounted: tap water 95%/70%, bottled water 95%/95% and surface lake water 100%/100%. The results obtained indicate a strong cytotoxic effect as the likely consequences of release of toxic elements (heavy metals), which requires further toxicity analytic investigation. To argue the opposite, that drinking water treatment products based on "hydronic" technology reduces its toxicity and thus have a beneficial effect on health goes to the sphere of quackery.

Hydronic technology; cytotoxicity; Daphnia magna Straus; drinking water; evidence based decision

nije evidentirano