[Rationale for differentiated sanitary protection zones for battery recycling enterprises in modern conditions].

In the paper there is presented the rationale for differentiated sanitary protective zones in the present conditions both of the increase of volumes of production and introduction of various technological solutions on the example of battery recycling enterprise. It is established that the in acting regulations the classification of enterprises recycling of non-ferrous metals, fails to take into account such the hazard risks criteria of the enterprise, as volume of emissions of priority substances, the height of their arrival in the atmosphere, etc., and also does not take into account increased significantly in the current time processing volumes. The results of the performed research allowed to offer new positions in the classification of production of secondary lead from used batteries (I to IV class), depending on the volume of production (from 20 000 to 160 000 tons per year), the amount of emissions of lead (0.2 to 1, 6 tons per year) and release height (15 to 60 m).

[Study of effectiveness of long-term per oral and parenteral cincacine administration at parenteral 241Am incorporation into the organism].

Effect of long-term (during 4 weeks) cincacine administration following single parenteral 241Am intake has been studied on rats depending on method (per oral or parenteral), dosage and time of treatment initiation. Cincacine administration leads to limitation of radionuclide incorporation in the major organs of deposition for the both methods of introduction. At the parenteral 241Am intake in the organism parenteral cincacine administration was found to be more effective compared to per oral cincacine administration even in case of its dose increase by a factor of 6 and 12. At the parenteral introduction of the preparation, time of treatment beginning is more significant than at per oral administration.

[Combined prophylactic administration of riboxin and algisorbum at 239Pu intake into gastrointestinal tract of rats].

The present study is devoted to the investigation of effectiveness of combined prophylactic administration of riboxin and algisorbum at 239Pu per oral intake and possible mechanisms of their interaction, and also to comparative estimation of effectiveness of combined administration of the preparations at per oral and intra peritoneal methods of riboxin introduction. The experiments have been carried out on white nonlinear rats. Riboxin (per oral and intra peritoneal) and algisorbum (per oral) have been introduced to the rats both separately and combined before per oral 239Pu introduction. Data obtained as a result of the investigation showed that combined riboxin and algisorbum introduction into gastrointestinal tract before 239PU intake lead to greater decrease in the plutonium content in the organs of deposition than single algisorbum administration. Intra peritoneal riboxin introduction reduced effectiveness of per oral algisorbum administration in plutonium binding in GI tract. Efficiency of combined riboxin and algisorbum administration in the reduction of 239Pu accumulation in organs depends on the method of riboxin introduction and develops only at per oral introduction.

[Potency of peroral and parenteral administration of Zinc-DTPA for decorporation of 241Am from the gastrointestinal tract]. / Effektivnost' tsinkatsina pri peroral'nom i parenteral'nom putiakh vvedeniia v dekorporatsii 241Am, postupivshego v pishchevaritel'nyi tract.

An effect of cincacine at three doses (25, 150 and 300 mumol/kg) has been studied in rats receiving 241Am citrate intragastrically. The radionuclide was introduced every other day for 2 weeks. The total content was 925 kBq/kg. A cincacine administration leads to limitation of radionuclide accumulation in the major organs of deposition independent of the modes of intake. At gastrointestinal 241Am intake peroral cincacine administration is more effective in limiting this radionuclide accumulation in skeleton but less effective in reduction of its accumulation in liver compared to parenteral cincacine. No reliable dependence of cincacine efficacy on dosage has been revealed. A morphology study of organs has shown that cincacine ingestion at a dose of 150 mumol/kg for 4 weeks and at a dose of 300 mumol/kg for 2 weeks produces a toxic effect on the small intestine mucosa. 25 mumol/kg is the optimum dose and per os administration of higher doses is not expedient.

[Investigation of biologically active supplement Marinid as a prophylactic agent in ecologically unfavorable territory]. / Issledovanie biologicheski aktivnoi dobavki marinid v kachestve profilakticheskogo sredstva dlia ékologicheski neblagopoluchnykh territorii.

Physicochemical investigation of the biologically active supplement Marinid has been carried out. Biological accessibility of iodine containing in Marinid has been determined. About 60 micrograms of iodine can be assimilated by thyroid from one 0.5 g Marinid tablet. Daily iodine need for groups of different age can be satisfied by 1-4 tablets. Marinid reduces 90Sr resorption from gastrointestinal tract by 20-40%.

[Study of the influence of peroral zincacin on the removing of ingested Americium]. / Issledovanie vliianiia peroral'nogo primeneniia tsinkatsina na vyvedenie ameritsiia pri ego postuplenii v zheludochno-kishechnyi trakt.

Effect of different cincacine doses was studied in rats ingesting americium citrate during 2 weeks. As a result new data showing the possibility and efficacy of per oral cincacine administration at americium intake into digestive tract have been obtained. Dose dependence of cincacine efficacy has been stated for per oral 241Am intake. Preparation administration at a dose of 25 mumol/kg reduces amount of 241Am in skeleton, liver and kidney by 93, 90 and 33%, respectively and is optimum for radionuclide removal from the body and for the prevention of its deposition in organs. Digestive system organs and kidney structure at cincacine administration at a dose of 150 and 300 mumol/kg) to the rats ingesting 241Am have been studied.

[Study of 137Cs transfer to the rat offspring with breast milk and a modifying effect of ferrocene on this process]. / Issledovanie zakonomernostei perekhoda 137Cs v potomstvo krys s molokom materi i modifitsiruiushchee deistvie ferrotsina na étot protsess.

137Cs transfer to the lactating rats' offspring has been investigated following daily administration of the radionuclide to the females. Certain patterns have been established for 137Cs accumulation dynamics in the female rats and their progeny during 30 days of suckling. Radiocaesium accumulation multiplicity in both female rats and offspring, as well as absorbed dose formation and a modifying effect of ferrocinum on these processes have been studied.

[Study of 137Cs transfer across the placenta to the rat fetuses and effect of ferrocin on these processes]. / Issledovanie zakonomernostei perekhoda 137Cs cherez platsentu v plody beremennykh krys i vliianie ferrotsina na éti protsessy.

The 137Cs placental transfer to the fetuses was studied using a daily oral 137Cs administration to pregnant rats. At day 19 of gestation, the fetuses receive 0.8% of the amount administered to the female. A daily application of ferrocinum reduces the 137Cs content of the female body by 82-84% and decreases the fetal accumulation down to 0.14%.

[The effect of algisorb on the level of the accumulation of zirconium, ruthenium, iodine and cesium radioactive isotopes in the body of rats]. / Vliianie al'gisorba na uroven' nakopleniia radioaktivnykh izotopov tsirkoniia, ruteniia, ioda i tseziia v organizme krys.

The sorption effect of Algisorbum has been studied in rats following single and multiple intragastric administration. Algisorbum doses of 250-2000 mg/kg decrease the absorption of 106Ru and 95Zr by 50%, that of 137Cs by 15% and have no effect on 131I absorption. Application of a complex of agents to protect the body from nuclear fission products is discussed.

[Method for deactivation of milk contaminated with cesium radionuclides]. / Sposob dezaktivatsii moloka, zagriaznennogo radionuklidami tseziia.

An effective method of milk deactivation was developed which can be used at individual enterprises of districts polluted by radioactive substances.

[Percutaneous resorption of cesium-137 and strontium-89 in alkali solutions and inactivation of the burned surface]. / Perkutannaia rezorbtsiia tseziia-137 i strontsiia-89 v rastvorakh shchelochi i dezaktivatsiia ozhogovoi poverkhnosti.

Experiments on white rats studied percutaneous resorption of 137Cs and 89Sr during their skin application in the form of 10 per cent and 40 per cent solutions of NaOH. The study also involved deactivation of the contaminated skin by means of traditional means of first aid recommended for alkali burn and the application of 5 per cent solution of boric acid with the addition of some detergent or 10 per cent solution of sodium hexametaphosphate. The dependence of deactivation efficacy on the time of beginning sanitary treatment, decontamination procedure and alkali concentration was established.

[Effect of the physico-chemical form and storage time of ferriferrocyanides on the sorption of cesium-137 in the digestive tract]. / Vliianie fiziko-khimicheskoi formy i srokov khraneniia ferriferrotsianidov na sorbtsiiu tseziia-137 v pischchevaritel'nom trakte.

In consequence of the test of Ferriferrocyanide efficiency under the intoxication of white rats by 137Cs the dependence of its sorption effect on the chemical form, production process and the degree of dispersion of the preparation is demonstrated. Maximum efficiency has been determined in Ferriferrocyanides when their degree of dispersion is 0.02-0.03 mm. Antidote qualities of the preparations can be preserved for 15 years.

[Quantitative patterns of a model of intratracheal administration in an experiment]. / Kolichestvennye zakonomernosti modeli vnutritrakheal'nogo vvedeniia v éksperimente.

The distribution of 239PuO2 (241Am) and BeO (7BeO) within the lungs of rats and dogs after the intratracheal administration was found to follow a normal law. The amplitude of deposition variations reached 98 per cent of the amount administered. It is recommended to group the experimental animals by individual deposition estimates.