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Synthesis of amorphous and crystalline double hydrated cobalt copper and nickel copper ammine diphosphates with a coordination structure is described.

Hydrated amorphous cobalt and nickel(II) ammine diphosphates were prepared.The chemistry of binary compounds of doublecharged metal ions is fairly well studied, and the possibilities for development of new phosphate materials based on them are almost exhausted or require higherlevel approaches [1,2]. Amorphous phosphates having an increased reactivity owing to their thermodynamic instability are of special interest even among known compounds [3]. They are formed as aqua and hydroxo complexes in ammonia solutions [4]. In this context, it was interesting to isolate new phosphate compounds containing coordinated ammonia from ammonia solutions. Such compounds can exhibit a biological or catalytic activity [538] and also can be used as luminophores or their components [9].Published procedures for preparing transition metal ammine complexes [10 314] can be subdivided into homogeneous and heterogeneous procedures. The homogeneous procedures are based on reactions of metal salt solutions with an aqueous ammonia solution, followed by precipitation of ammine complexes with an organic solvent, evaporation, or freezing of the solution. In the heterogeneous procedures, a solution or a solid metal salt is treated with gaseous ammonia.The main problem of isolating solid diphosphates of double-charged metal ammine complexes from a homogeneous mixture is very high solubility of salts with complex [M(NH 3 ) n ] 2+ ions; therefore, it appears difficult to achieve the solubility product (SP) for precipitating complex phosphate salts. EXPERIMENTALWe prepared hydrated nickel(II) ammine diphosphate by salting it out from an ammonia solution with an organic solvent [14]. As the starting reagent we used Ni 2 P 2 O 7 . 6H 2 O (37.0% NiO) synthesized according to [15]. We dissolved 1 g of this compound in 10 ml of 23% ammonia. We added 25 ml of acetone to the resulting solution. In so doing, a blue substance precipitated, which was then separated from the mother liquid and kept at 15325oC in air until it completely solidified (to constant weight). Found, %:The composition of the anionic component was determined by quantitative paper chromatography [1] (% of P 2 O 5 ): P 2 O 7 43 95.50, PO 4 33 4.50. The starting nickel diphosphate contained 3.50% of P 2 O 5 as PO 4 33 .We prepared hydrated cobalt(II) ammine diphosphate by the procedure similar to that used for preparing cobalt(II) ammine monophosphate [7]. The starting cobalt diphosphate Co 2 P 2 O 7 . 6H 2 O was prepared according to [16,17]. The synthesis included saturation of Co 2 P 2 O 7 . 6H 2 O powder with gaseous ammonia under static conditions at 15325oC for 96 h, followed by keeping in air of the resulting powder at 15325oC to a constant weight. Found, %: CoO 32.95; P 2 O 5 32.01; NH 3 13.26; H 2 O 21.69. Cobalt(II) ammine diphosphate 2Co 2 P 2 O 7 . 7NH 3 . 11H 2 O. Calculated, %: CoO 32.97; P 2 O 5 32.11; NH 3 13.12; H 2 O 21.80. Composition of the anionic component (quantitative paper chromatography [1], % of P 2 O 5 ): P 2 O 7 43 93.80 and PO 4 33 6.20. The starting cobalt(I...

The assessment of the results of water quality analyses of sources on the territory of NULES research farm in the form of Harrington generalized desirability function was done. The suitability of water intended for use as drinking water by animals was examined using drinking water US EPA regulations and Ukrainian standards. It was shown that water quality is unstable, but good in general. The most problematic parameters are total hardness, nitrate pollution and high Cadmium and Lead content.

Global climate change requires reviewing the approaches to irrigated agriculture using. In particular, irrigation is assessed as a mitigation factor potentially reduced the impacts of climate change on agriculture by about 40% [1]. T h e r e f o r e , t h e e n v i r o n m e n t a l a n d l a n d reclamation assessment of natural waters should be comprehensive, taking into account the soilclimatic conditions of the irrigation zone, the physiological features of agricultural crops and the requirements of the functioning of the technical means of the irrigation system.The concept of the generalized water quality assessment in the form of so-called Water Quality Index (WQI) has been proposed by R. Horton in 1965 [2]. During last decades this idea was significantly improved and expanded [3][4][5][6]. WQI modifications has been accepted as regional or state standards of complex water assessment in the