Environment-dependent fluctuations of potentiometric pH dynamics in geomagnetic field

This work explores fluctuations of potentiometric pH dynamics in environments with different configurations of geomagnetic fields. High-resolution pH measurements of test liquids are conducted in electromagnetically shielded and thermally stabilized conditions. External measurement environment in two laboratories is modulated by non-conducting/non-magnetic objects of organic and inorganic origins. Totally, 88 experiments in three groups have been conducted during 4 months. The affected pH dynamics at the level of 10^-2-10^-5 pH is detected in 93.5%, 82.2% and 74.4% depending on dielectric permittivity of environmental objects. Reaction of potentiometric system has a typical delay of 30-180 minutes. Experiments in both laboratories demonstrated 19% difference of reproducibility rate caused by different background fluctuations. To explain the obtained results, the paper discusses the effects of the Earth's electric and magnetic fields in the form of magnetospheric Poynting vectors or spin-spin forces in geomagnetic field, which affects the productivity of ionic and free-radical reactions. Since the pH level of aqueous solutions controls various biochemical reactions, this mechanism can explain several biological effects with non-contact signal transmission observed in environmental biology and electromagnetic biophysics.