THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLES
The paper presents results of two inorganic sorbents for the cesium selective concentration in the scheme of 137Cs radio/chemical analysis in natural water samples. Nickel/potassium ferrocyanide dispersed in a zirconium dioxide matrix obtained by the sol/gel method with subsequent drying at 100 ºC (...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Russian |
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Russian Research Institute for Water Resources Integrated Management and Protection (RosNIIVKh)
2019-10-01
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| Series: | Водное хозяйство России: проблемы, технологии, управление |
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| Online Access: | https://waterjournal.ru/article/157 |
| _version_ | 1818992535423418368 |
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| author | Vladimir S. Semenishchev Svetlana M. Titova Anna V. Voronina Aleksandr F. Nikiforov Marina O. Blinova |
| author_facet | Vladimir S. Semenishchev Svetlana M. Titova Anna V. Voronina Aleksandr F. Nikiforov Marina O. Blinova |
| author_sort | Vladimir S. Semenishchev |
| collection | DOAJ |
| description | The paper presents results of two inorganic sorbents for the cesium selective concentration in the scheme of 137Cs radio/chemical analysis in natural water samples. Nickel/potassium ferrocyanide dispersed in a zirconium dioxide matrix obtained by the sol/gel method with subsequent drying at 100 ºC (Т-35 sorbent produced by AO “Termoksid”), and nickel/potassium ferrocyanide chemically deposited upon a matrix of hydrated titanium dioxide thermally treated at 400 ºC (NKF-GDT sorbent developed by UrFU). We have shown that in the dynamic conditions NKF-GDT sorbent possesses significantly higher sorption properties in comparison with T-35 in spite of close to similar sorption characteristics in the static conditions. For both sorbents we have shown that the degree of cesium sorption from acidulated sea water (pH = 2) is significantly higher that from neutral or low-alkaline water (pH = 28.2). This can be explained by formation of relatively stable pseudo/radio/colloid forms of cesium at pH = 28.2 that are to be destroyed with the solution acidulation. The authors have stated that NKF-GDT sorbent can be used for 137Cs selective concentration from various types of natural water samples. The radio/chemical analysis scheme has been tested with 7.2 l water sample from the Techa River (ChelyabinskOblast) with addition of 0.1 mg/l of stable cesium for determination of the output with ICP-MS instrument. Total chemical output of cesium in the process of concentration was 91.7 % and specific activity of 137Cs in the sample was 1.36±0.21 Bq/l. |
| first_indexed | 2024-12-20T20:27:42Z |
| format | Article |
| id | doaj.art-2862dddcc54b462daf5272a358cff953 |
| institution | Directory Open Access Journal |
| issn | 1999-4508 2686-8253 |
| language | Russian |
| last_indexed | 2024-12-20T20:27:42Z |
| publishDate | 2019-10-01 |
| publisher | Russian Research Institute for Water Resources Integrated Management and Protection (RosNIIVKh) |
| record_format | Article |
| series | Водное хозяйство России: проблемы, технологии, управление |
| spelling | doaj.art-2862dddcc54b462daf5272a358cff9532022-12-21T19:27:25ZrusRussian Research Institute for Water Resources Integrated Management and Protection (RosNIIVKh)Водное хозяйство России: проблемы, технологии, управление1999-45082686-82532019-10-0110510812310.35567/1999-4508-2019-5-8THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLESVladimir S. Semenishchev0Svetlana M. Titova1Anna V. Voronina2Aleksandr F. Nikiforov3Marina O. Blinova4Ural Federal University, Ekaterinburg, RussiaUral Federal University, Ekaterinburg, RussiaUral Federal University, Ekaterinburg, RussiaUral Federal University, Ekaterinburg, RussiaUral Federal University, Ekaterinburg, RussiaThe paper presents results of two inorganic sorbents for the cesium selective concentration in the scheme of 137Cs radio/chemical analysis in natural water samples. Nickel/potassium ferrocyanide dispersed in a zirconium dioxide matrix obtained by the sol/gel method with subsequent drying at 100 ºC (Т-35 sorbent produced by AO “Termoksid”), and nickel/potassium ferrocyanide chemically deposited upon a matrix of hydrated titanium dioxide thermally treated at 400 ºC (NKF-GDT sorbent developed by UrFU). We have shown that in the dynamic conditions NKF-GDT sorbent possesses significantly higher sorption properties in comparison with T-35 in spite of close to similar sorption characteristics in the static conditions. For both sorbents we have shown that the degree of cesium sorption from acidulated sea water (pH = 2) is significantly higher that from neutral or low-alkaline water (pH = 28.2). This can be explained by formation of relatively stable pseudo/radio/colloid forms of cesium at pH = 28.2 that are to be destroyed with the solution acidulation. The authors have stated that NKF-GDT sorbent can be used for 137Cs selective concentration from various types of natural water samples. The radio/chemical analysis scheme has been tested with 7.2 l water sample from the Techa River (ChelyabinskOblast) with addition of 0.1 mg/l of stable cesium for determination of the output with ICP-MS instrument. Total chemical output of cesium in the process of concentration was 91.7 % and specific activity of 137Cs in the sample was 1.36±0.21 Bq/l.https://waterjournal.ru/article/157cesiumferrocyanideradio/chemical analysisnatural watersea waterthe techa riverradioactive contamination |
| spellingShingle | Vladimir S. Semenishchev Svetlana M. Titova Anna V. Voronina Aleksandr F. Nikiforov Marina O. Blinova THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLES Водное хозяйство России: проблемы, технологии, управление cesium ferrocyanide radio/chemical analysis natural water sea water the techa river radioactive contamination |
| title | THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLES |
| title_full | THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLES |
| title_fullStr | THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLES |
| title_full_unstemmed | THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLES |
| title_short | THE USE OF COMPOSITE SORBENTS BASED ON NICKEL FERROCYANIDE IN DETERMINATION OF CESIUM RADIONUCLIDES IN NATURAL WATER SAMPLES |
| title_sort | use of composite sorbents based on nickel ferrocyanide in determination of cesium radionuclides in natural water samples |
| topic | cesium ferrocyanide radio/chemical analysis natural water sea water the techa river radioactive contamination |
| url | https://waterjournal.ru/article/157 |
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