An excess of manganese, iron and aluminum was observed during the study. The levels of these metals exceed the ecological and hygienic norms. The water does not post any threat to the population since it is not consumed. The levels of vanadium and zinc exceeds the norms by 1-1.5 times in half of the collected samples. An excess of copper was found in most of them. The contents of boron, silicon, lithium, potassium, calcium, magnesium, barium, chromium, cobalt, nickel, cadmium, arsenic, selenium, lead, beryllium, tungsten and tin do not exceed the established MPCs, but several curious jumps in the background contents for a number of points can be noted :
• points Nr. 5 and Nr. 16, showed an excess of phosphates, and increasing levels of nickel, copper and lead.
• minor traces of gold (0.012 μg /L) could be seen at point Nr. 23 and in several subsequent points further downstream
• the levels of tungsten at the point Nr. 53 exceed the background value by 20 times and is 0.3 MPC
• the confluence at the point Nr. 54 showed a major increase in content of nearly all metals (the norms were not exceeded). The increases in concentration of chromium, rubidium, silver, tin, antimony, cesium and bismuth were especially noticeable.
The data regarding the content of rare earth elements (REE), showed no outliers. Their levels lied anywhere between 0.001 to 0.200 μg / L , which does not have any sort of ecological effect.
Elemental analysis of the samples was carried out at the analytical certification testing center of the Federal State Budgetary Institution of Science, Institute for Problems of Microelectronics Technology and High-Purity Materials, RAS (ASITS IPTM RAS). The center is accredited by the Federal Accreditation Service ROSAKCREDITATSIYA. The accreditation certificate is registered in the State Register under No. ROSS RU.0001.513800 dated April 28, 2018. The determination of the chemical composition of the water was carried out in accordance to the NSAM method No. 520-AES / MS "Determination of the elemental composition of natural, drinking, waste and sea waters by atomic emission and mass spectral methods with inductively coupled plasma" (Certificate of metrological certification of the method No. 520-01.00115- 2013-2017 dated March 27, 2017).
The created protocol (dated 07/30/2020) contains detailed data on the content of Li, Be, B, Na, Mg, Al, Si, P, S, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Rb, Sr, Y, Zr, Mo, No, Ru, Rh, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Lu, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Th and U, presence of which was determined using iCAP-6500(Therto Scientific, USA) and mass
spectral methods of analysis.