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Wang N, Xiong R, Zhang G, Liu R, He X, Huang S, Liu H, Qu J. Species transformation and removal mechanism of various iodine species at the Bi 2O 3@MnO 2 interface. WATER RESEARCH 2022; 223:118965. [PMID: 35973251 DOI: 10.1016/j.watres.2022.118965] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/23/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Long-term exposure to excessive iodine via drinking water significantly increases the risk of thyroid diseases. Further, the mechanisms and feasible technologies for iodine removal are far from being well elucidated. In this study, we constructed a heterogeneous Bi2O3@MnO2 interface with oxidation and adsorption efficiency toward iodide (I-), and investigated the performance and mechanisms involved in iodine removal. Bi2O3@MnO2 at the optimized Bi/Mn ratio of 0.05:1 had a maximum adsorption capacity of 1.19, 1.21, and 1.06 mg/g toward I-, iodine elemental (I2), and iodate (IO3-), respectively. According to the density functional theory (DFT) calculation, Bi2O3@MnO2 had an adsorption energy of -2.34, -2.11, and -3.89 eV for I-, I2, and IO3-, and exhibited a better band structure and state density character for iodine removal. Based on the results of XPS, HPLC, and LC-ICP-MS characterization, Bi2O3 plays an important role in adsorbing and capturing I- whereas MnO2 dominates the moderate oxidation of I- and the adsorption of I- and I2. The adsorbed I- and I2 concentrations on the Bi2O3@MnO2 surfaces were 146.3 μg/L and 18.3 μg/L. Notably, IO3- was not detected owing to its moderate oxidation effect. The coexisting ions of chloride (Cl-) and bromide (Br-) tended to occupy the Bi2O3 lattice and form insoluble BiOCl and BiOBr. Further, reductive species, such as sulphite (SO32-), may reduce MnO2 to Mn(III) and Mn(II). The synergistic effect between moderate oxidation and adsorption led to Bi2O3@MnO2 with high iodine removal capability. Overall, this study proposes a strategy for designing suitable interfaces and adsorbents for iodine removal; however, further studies are necessary to advance its application in practice.
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Affiliation(s)
- Nan Wang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China
| | - Ruoxi Xiong
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China
| | - Gong Zhang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China
| | - Ruiping Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China.
| | - Xingyang He
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China
| | - Shier Huang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China
| | - Huijuan Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China
| | - Jiuhui Qu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Weiqing Building, Beijing 100084, China
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Wang N, Zhang G, Xiong R, Liu R, Liu H, Qu J. Synchronous Moderate Oxidation and Adsorption on the Surface of γ-MnO 2 for Efficient Iodide Removal from Water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9417-9427. [PMID: 35737437 DOI: 10.1021/acs.est.2c01682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Long-term exposure to excessive iodine via drinking water presents health risks. Moderate oxidation of iodide (I-) to iodine (I2) has a better iodine removal effect than excessive oxidation to iodate (IO3-). This study combines computational and experimental methods to construct a heterogeneous interface with synchronous I- moderate oxidation and I2 adsorption to increase the total iodine removal. Compared to other forms of crystal manganese dioxide (MnO2), theoretical calculations predict that MnO2 with a γ-crystal structure has the lowest adsorption energy, that is, -1.20 eV, and a slight overlap between the conduction and valence bands, which favors electron transfer between I- and Mn(IV) and I2 adsorption. Thus, γ-type MnO2 was designed by adjusting the precursor Mn sources and hydrothermal reaction conditions. The liquid chromatography-inductively coupled plasma-mass spectrometry and high-performance liquid chromatography confirmed that the total iodine concentration in water decreased from 173.7 to 36.3 μg/L after 2 h, with 200 mg/L γ-MnO2 dosage lower than the national standard of 0.1 mg/L. A minute proportion of I- in water was converted to IO3- (approximately 1.1 μg/L). The current I- adsorbent performed better than previously reported ones. During iodine removal, most of the I- migrated from water to the surface of γ-MnO2, and the ratio of I- to I2 was determined to be 1:0.6 by X-ray photoelectron spectroscopy. This study evaluates iodine species transformation and an optimum strategy for heterogeneous interface design; it is promising for treating high-iodine groundwater.
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Affiliation(s)
- Nan Wang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Gong Zhang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Ruoxi Xiong
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Ruiping Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Huijuan Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiuhui Qu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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Radioiodination and biological evaluation of Cimetidine as a new highly selective radiotracer for peptic ulcer disorder detection. RADIOCHIM ACTA 2020. [DOI: 10.1515/ract-2020-0046] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Abstract
One of the most famous techniques for stomach ulcer imaging is the nuclear imaging technique. We aim to focus on the synthesis of 125I-cimetidine (125I-cim) as an agent for peptic ulcer imaging. Cimetidine was labeled with Iodine-125 using a different oxidizing agent (Ch-T, NBS). All factors affecting the labeling yield were optimized. The radiochemical yield of 125I-cim was 98 ± 0.22% at optimum conditions. In vitro stability, in vivo biodistribution of 125I-cimetidine was studied in three groups: control group, pretreated group, and ulcer bearing group. In vivo biodistribution studies of 125I-cim revealed high uptake in the stomach ulcer, reaching about 75.4 ± 1.2% ID/g at 15 min post-injection, than pretreated groups compared to the control. The results showed the suitability of using 125I-cimetidine for stomach ulcer imaging.
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Jáuregui-Haza U, Ferino-Pérez A, Gamboa-Carballo JJ, Gaspard S. Guest-host complexes of 1-iodochlordecone and β-1-iodo-pentachlorocyclohexane with cyclodextrins as radiotracers of organochlorine pesticides in polluted water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:41105-41116. [PMID: 32052338 DOI: 10.1007/s11356-020-07862-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
The chlordecone (CLD) and the β-hexachlorocyclohexane (β-HCH) are persistent organic pollutants with a great environmental stability that cause severe affectations to health. The concentration of these pesticides in the environment is low, which represent a problem for their determination, even for the modern analytical methods. The labeling of these compounds with an iodine radioisotope for their use as radiotracers is a potential solution to this problem. The present work studies the interaction of 1-iodochlordecone (I-CLD) and β-1-iodo-pentachlorocyclohexane (I-β-HCH) with cyclodextrins (CDs), during the formation of molecular inclusion complexes pesticide@CDs. The methodology of multiple minima hypersurfaces, quantic calculations based on density functional theory and a topologic study of electronic density were used to corroborate the stability of I-CLD@CDs and I-β-HCH@CDs complexes. Three main types of guest-host complexes in relation to the occlusion grade were observed: with total occlusion, with partial occlusion and external interaction without occlusion. The more stable complexes are obtained when the γ-CD is the host molecule. The formed complexes with radiolabelled pollutants are analogous with the ones reported in previous works. These results confirm the utility of these complexes for the removal of organochlorine pesticides from polluted water and, also, demonstrate the possibility of using the I-CLD and the I-β-HCH as possible radiotracers for these pollutants in further studies with environmental proposes.
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Affiliation(s)
- Ulises Jáuregui-Haza
- Instituto Tecnológico de Santo Domingo (INTEC), Santo Domingo, Dominican Republic.
- Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Universidad de La Habana, 10600, La Habana, Cuba.
| | - Anthuan Ferino-Pérez
- Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Universidad de La Habana, 10600, La Habana, Cuba
| | - Juan José Gamboa-Carballo
- Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Universidad de La Habana, 10600, La Habana, Cuba
| | - Sarra Gaspard
- Laboratoire COVACHIM M2E, Université des Antilles, 97157, Pointe a Pitre, Guadeloupe, France
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Rosecker V, Denk C, Maurer M, Wilkovitsch M, Mairinger S, Wanek T, Mikula H. Cross-Isotopic Bioorthogonal Tools as Molecular Twins for Radiotheranostic Applications. Chembiochem 2019; 20:1530-1535. [PMID: 30742739 PMCID: PMC6617999 DOI: 10.1002/cbic.201900042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 11/08/2022]
Abstract
Radiotheranostics are designed by labeling targeting (bio)molecules with radionuclides for diagnostic or therapeutic application. Because the pharmacokinetics of therapeutic compounds play a pivotal role, chemically closely related imaging agents are used to evaluate the overall feasibility of the therapeutic approach. "Theranostic relatives" that utilize different elements are frequently used in clinical practice. However, variations in pharmacokinetics, biodistribution, and target affinity due to different chemical properties of the radioisotopes remain as hurdles to the design of optimized clinical tools. Herein, the design and synthesis of structurally identical compounds, either for diagnostic (18 F and a stable metal isotope) or therapeutic application (radiometal and stable 19 F), are reported. Such "molecular twins" have been prepared by applying a modular strategy based on click chemistry that enables efficient radiolabeling of compounds containing a metal complex and a tetrazine moiety. This additional bioorthogonal functionality can be used for subsequent radiolabeling of (bio)molecules or pretargeting approaches, which is demonstrated in vitro.
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Affiliation(s)
- Veronika Rosecker
- Institute of Applied Synthetic ChemistryTU Wien (Vienna University of Technology)Getreidemarkt 91060ViennaAustria
| | - Christoph Denk
- Institute of Applied Synthetic ChemistryTU Wien (Vienna University of Technology)Getreidemarkt 91060ViennaAustria
| | - Melanie Maurer
- Institute of Applied Synthetic ChemistryTU Wien (Vienna University of Technology)Getreidemarkt 91060ViennaAustria
| | - Martin Wilkovitsch
- Institute of Applied Synthetic ChemistryTU Wien (Vienna University of Technology)Getreidemarkt 91060ViennaAustria
| | - Severin Mairinger
- Preclinical Molecular ImagingAIT Austrian Institute of Technology2444SeibersdorfAustria
| | - Thomas Wanek
- Preclinical Molecular ImagingAIT Austrian Institute of Technology2444SeibersdorfAustria
| | - Hannes Mikula
- Institute of Applied Synthetic ChemistryTU Wien (Vienna University of Technology)Getreidemarkt 91060ViennaAustria
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Mostafa M, El-gharbawy AF, El-Absy MA, Soliman SE, Aly FA. Preconcentration of radioiodine as AgI and purification from radiotellurium waste. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-2988-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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El-Tawoosy M. Radioiodination of pindolol as a β-adrenergic receptor using different oxidizing agents. RADIOCHEMISTRY 2013. [DOI: 10.1134/s1066362213060106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Farouk N, Ramadan HE, El-Amir MA. Labeling of EGFR inhibitor to prepare a potential SPECT agent for molecular imaging of breast cancer via iodine-bromine exchange. RADIOCHEMISTRY 2012. [DOI: 10.1134/s1066362212050141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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El-Tawoosy M, Ibrahim IT. Radioiodination and biological evaluation of salbutamol as a β2-adrenoceptor agonist. RADIOCHEMISTRY 2012. [DOI: 10.1134/s1066362212040169] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Radiochemical precipitation studies for separation of iodine from tellurium and other trace impurities. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-1890-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Labeling of atenolol with radioactive iodine-125 using N-bromosuccinimide and hydrogen peroxide as oxidizing agents. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1303-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Farouk N. Radioiodination of (N-diethylaminoethyl)-4-iodobenzamide (IBZA) as a new potent melanoma imaging and therapeutic agent via isotopic exchange reaction. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1057-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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N-4-iodophenyl-N′-2-chloroethylurea, a novel potential anticancer agent with colon-specific accumulation: radioiodination and comparative in vivo biodistribution profiles. Invest New Drugs 2009; 28:124-31. [DOI: 10.1007/s10637-009-9222-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Accepted: 01/23/2009] [Indexed: 10/21/2022]
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14
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15
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Filer CN. The synthesis of dopaminergic radioligands labelled with tritium and iodine-125. J Labelled Comp Radiopharm 2007. [DOI: 10.1002/jlcr.1399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Zea-Ponce Y, Baldwin RM, Miliust RA, Bakthavachalam V, Innis RB. [123I]iodomethane, a main product in the synthesis of 5-[123I]iodo-6-nitroquipazine by iododestannylation. J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.2580360405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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El-Shahawi MS, El-Shaboury G, Aly MAM, El-Tawoosy M. Chemical and thermodynamic characteristics of the isotopic exchange reaction between radioiodine and iodohippuric acid isomers. ANAL SCI 2003; 19:1331-4. [PMID: 14516090 DOI: 10.2116/analsci.19.1331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The parameters affecting the absolute radiochemical yield of the isotopic exchange reaction between radioiodine (125I-) and iodohippuric acid isomers on molten ammonium acetate as a medium exchange at 120 degrees C without any carrier added (radioiodine, 125I-) was determined. The isotopic exchange reactions of radioiodine as 125I- for iodine-127 of o- and p-iodohippuric acid isomers occur more rapidly than m-iodohippuric acid isomer. These reactions proceed by nucleophilic second order substitution reaction. The kinetics and thermodynamic parameters of these isotopic exchange reactions were determined. The absolute radiochemical yield and radio pharmaceutical purity were determined by HPLC and TLC techniques.
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Affiliation(s)
- M S El-Shahawi
- Chemistry Department, Faculty of Science at Damietta, Mansoura University, Damietta, Egypt.
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19
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El-Wetery AS, El-Mohty AA, Ayyoub S, Raieh M. Catalytic effect of copper(II) chloride on the radioiodination of L-p-iodophenylalanine. J Labelled Comp Radiopharm 1998. [DOI: 10.1002/(sici)1099-1344(199708)39:8<631::aid-jlcr8>3.0.co;2-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
Biologically targeted radiotherapy in clinical practice requires a molecule which has a relative specificity for tumour tissue--the missile--coupled to a radionuclide with appropriate physical characteristics--the warhead. When administered to a patient this combination should result in selective irradiation of the target tumour cells with relative sparing of normal tissues. Simple ions and small molecules which follow physiological pathways as either the natural substrates or analogues form the best examples of biological targeting. Clinically valuable results are seen with, for instance, iodine uptake by normal and malignant thyroid cells, incorporation of the calci-mimetic element strontium in areas of increased bone metabolism and accumulation of the catecholamine analogue meta-iodobenzylguanidine in neuroblastoma. The use of monoclonal antibodies as targeting vehicles has not proved to be a panacea, yet some patients with lymphoma, hepatoma and ovarian carcinoma have obtained benefit. Current clinical studies in targeted radiotherapy focus on the integration of radionuclide treatment with conventional treatments, and the optimization of such combined approaches. The development of modifications to offset the limitations inherent in the use of crude antibodies also offers an opportunity for improved clinical outcomes.
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Affiliation(s)
- M N Gaze
- Meyerstein Institute of Oncology, Middlesex Hospital, London, UK
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22
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Kinetics of isotope exchange between [3-(iodophenyl)methyl]guanidine (mIBG) and [131I]-iodide. J Radioanal Nucl Chem 1992. [DOI: 10.1007/bf02034784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Bujdosó E. Radiochemistry and radiochemical separations. J Radioanal Nucl Chem 1989. [DOI: 10.1007/bf02136102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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