1
|
Rizk HE, Breky MME, Attallah MF. Development of purification of no-carrier-added 47Sc of theranostic interest: selective separation study from the natTi(n,p) process. RADIOCHIM ACTA 2023. [DOI: 10.1515/ract-2022-0082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Abstract
Scandium-47 is one of the most promising medical radioisotopes, and its production and trace separation make it an attractive candidate for theranostic application. In this study, the production of no-carrier-added (NCA) 47Sc through the natTi(n,p) reaction and subsequent purification using liquid–liquid extraction was done for the theranostic application. The comparative separation of NCA 47Sc after the dissolution of an activated Ti target using Di-2-Ethylhexyl Phosphoric Acid (HDEHP) in kerosene was evaluated. The extraction process was optimized in terms of the concentration of extractant, extraction time, pH, and reaction temperature to achieve the maximum possible separation. HDEHP is efficient and promising for rapid extraction and separation of NCA 47Sc from Ti ions at low acidity (pH 0.85) with high extraction percent (>99%), contaminated with 22.3% of Ti ions after 5 min of extraction time. Different stripping reagents were used to separate loaded 47Sc and Ti ions. Firstly, 5 M HCl was enough for stripping the loaded Ti ions. Then the loaded 47Sc was separated with a purity of 100% using 0.05 M NaOH. The obtained results find the HDEHP a promising extractant for efficient separation of 47Sc from irradiated Ti target for preparing the 47Sc radiopharmaceuticals for theranostics applications.
Collapse
Affiliation(s)
- Hoda E. Rizk
- Nuclear Fuel Technology Department, Hot Laboratories and Waste Management Center , Egyptian Atomic Energy Authority , Cairo P.O. Box 13759 , Egypt
| | - Mohamed M. E. Breky
- Radiation Protection Department, Hot Laboratories and Waste Management Center , Egyptian Atomic Energy Authority, P.O. Box 13759 , Cairo , Egypt
| | - Mohamed F. Attallah
- Analytical Chemistry and Control Department, Hot Laboratories and Waste Management Center , Egyptian Atomic Energy Authority, P.O. Box 13759 , Cairo , Egypt
| |
Collapse
|
3
|
Kazakov AG, Babenya JS, Ekatova TY, Belyshev SS, Khankin VV, Albaghdadi O, Kuznetsov AA, Dovhyi II, Bezhin NA, Tananaev IG. Photonuclear Alchemy: Obtaining Medical Isotopes of Gold from Mercury Irradiated on Electron Accelerators. Molecules 2022; 27:molecules27175532. [PMID: 36080299 PMCID: PMC9457897 DOI: 10.3390/molecules27175532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
In our work, the photonuclear production of 198,199Au isotopes for nuclear medicine purposes was studied, and a method for their recovery from irradiated mercury was developed. The yields of the corresponding nuclear reactions were determined, and a comparison of various methods of obtaining gold radioisotopes was provided. New sorbents based on benzo-15-crown-5, which selectively binds gold, were studied, and the optimal conditions for Au recovery with a high degree of purification from mercury were found. It was established that, for the fast and quantitative recovery of Au isotopes, it was necessary to add at least 0.1 mg of the carrier. As a result, the developed method can be regularly used to obtain 198,199Au for the research of radiopharmaceuticals based on them.
Collapse
Affiliation(s)
- Andrey G. Kazakov
- Radiochemistry Laboratory, Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences (GEOKHI RAS), Kosygin St., 19, 119991 Moscow, Russia
- Correspondence:
| | - Julia S. Babenya
- Radiochemistry Laboratory, Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences (GEOKHI RAS), Kosygin St., 19, 119991 Moscow, Russia
| | - Taisya Y. Ekatova
- Radiochemistry Laboratory, Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences (GEOKHI RAS), Kosygin St., 19, 119991 Moscow, Russia
| | - Sergey S. Belyshev
- Department of Physics, Lomonosov Moscow State University (MSU), Leninskie Gory, 1, Bld. 2, 119991 Moscow, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov MSU, Leninskie Gory, 1, Bld.2, 119991 Moscow, Russia
| | - Vadim V. Khankin
- Skobeltsyn Institute of Nuclear Physics, Lomonosov MSU, Leninskie Gory, 1, Bld.2, 119991 Moscow, Russia
| | - Omar Albaghdadi
- Department of Physics, Lomonosov Moscow State University (MSU), Leninskie Gory, 1, Bld. 2, 119991 Moscow, Russia
| | - Alexander A. Kuznetsov
- Department of Physics, Lomonosov Moscow State University (MSU), Leninskie Gory, 1, Bld. 2, 119991 Moscow, Russia
- Skobeltsyn Institute of Nuclear Physics, Lomonosov MSU, Leninskie Gory, 1, Bld.2, 119991 Moscow, Russia
| | - Illarion I. Dovhyi
- Department of Marine Biogeochemistry, Marine Hydrophysical Institute of the Russian Academy of Sciences, Kapitanskaya Str., 2, 299011 Sevastopol, Russia
| | - Nikolay A. Bezhin
- Department of Marine Biogeochemistry, Marine Hydrophysical Institute of the Russian Academy of Sciences, Kapitanskaya Str., 2, 299011 Sevastopol, Russia
- Department of Chemistry and Chemical Engineering, Sevastopol State University (SSU), Universitetskaya Str., 33, 299053 Sevastopol, Russia
| | - Ivan G. Tananaev
- Radiochemistry Laboratory, Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences (GEOKHI RAS), Kosygin St., 19, 119991 Moscow, Russia
- Department of Chemistry and Chemical Engineering, Sevastopol State University (SSU), Universitetskaya Str., 33, 299053 Sevastopol, Russia
- Department of Nuclear Technology, Far Eastern Federal University, Sukhanov Str., 8, 690091 Vladivostok, Russia
| |
Collapse
|
5
|
Attallah MF, Mohamed GY, Breky MME. Production and subsequent separation of 47Sc of nuclear medicine applications using neutron-induced reactions on different natural targets. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08232-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract47Sc can be produced from different three neutron induced nuclear reactions as 47Ti(n,p)47Sc, 50V(n,α)47Sc and 46Ca(n,γ)47Ca, 47Ca(β−)47Sc using the Egyptian Second Research Reactor. The measured neutron cross-sections (σ) are 62.12 ± 1.93, 4.51 ± 1.27 and 69.36 ± 2.01 mb from the natural targets of TiO2, V2O3 and CaO respectively. The carrier-free 47Sc from 47Ti(n,p), was purified using a composite of Alginate–Carboxymethyl cellulose/di-2-ethylhexyl phosphoric acid. The radiochemical separation of 47Sc with a recovery yield of 90 ± 1.2% was obtained. The eluted 47Sc passed quality control tests (chemical, radionuclide, and radiochemical purities) and was found to be suitable for nuclear medicine applications.
Collapse
|
6
|
Attallah MF, Shahr El-Din AM, Gizawy MA, Ali AMI. Efficient trace-scale extraction method of reactor produced 199Au adequate for nuclear medicine applications. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2020-0108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Abstract
Production of no carrier-added (NCA) 199Au through natPt(n, γ) reaction and subsequent purification using liquid-liquid extraction from other radioisotopes is studied in the context of theranostic application. Comparative separation of NCA 199Au after dissolution of activated Pt target using three Cyanex compounds (Cyanex-272, Cyanex-302 and Cyanex-923) is evaluated. The extraction process is optimized in terms of the type of extractant, the concentration of extractant, extraction time and aqueous media (HNO3, NH4OH). Among these extractants, the Cynaex-923 is efficient and promising for rapid separation and production of NCA 199Au from HNO3 by high extraction %. Selective extraction of 199Au from other Pt and Ir radioisotopes is observed. High recovery of 199Au was obtained in the case of Cyanex-923 using 0.05 M thiourea dissolved in HCl or 2 M NaOH. Our results find the Cyanex-923 as a promising extractant for efficient separation of 199Au from irradiated Pt target with high yield (99%).
Collapse
Affiliation(s)
- Mohamed F. Attallah
- Analytical Chemistry and Control Department , Hot Laboratories Center, Atomic Energy Authority of Egypt , P.O. Box 13759 , Cairo , Egypt
| | - Ahmed M. Shahr El-Din
- Analytical Chemistry and Control Department , Hot Laboratories Center, Atomic Energy Authority of Egypt , P.O. Box 13759 , Cairo , Egypt
| | - Mohamed A. Gizawy
- Radioisotopes Production Facility (RPF), Atomic Energy Authority of Egypt , P.O. Box 13759 , Cairo , Egypt
| | - Amal M. I. Ali
- Technology of Nuclear Fuel Department , Hot Laboratories Center, Atomic Energy Authority of Egypt , 13759 Abu Zaabal , Cairo , Egypt
| |
Collapse
|