共查询到20条相似文献,搜索用时 15 毫秒
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S. Malja K. Schomacker E. Malja 《Journal of Radioanalytical and Nuclear Chemistry》2000,245(2):403-406
The production of 90Y by 90Sr-90Y generator was studied. 90Sr was adsorbed on a column with Aminex A-5 resin. The daughter radionuclide 90Y was eluted with 0.7M -hydroxyisobutyrate (-HIB, pH 5.4). Radionuclidic, radiochemical and chemical purities were >98% and yield >85%. After converting into chloride form 90YCl3-solution (pH:1) was used for preparing injectable yttrium citrate and labeling some other radiopharmaceuticals. Furthermore, a fast ITLC-method for the determination of 90Sr in 90Y-eluate was developed. 相似文献
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W. Czysz und A. Emr 《Fresenius' Journal of Analytical Chemistry》1965,214(3):206
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No-carrier-added 90Y was separated from 90Sr via colloid formation of 90Y in basic media. The mixture was passed through glass wool or membrane filter. The filtrate contained 90Sr, while 90Y was retained on glass wool/membrane filter. Yttrium-90 was extracted with 0.1 M HCl. Contamination of 90Sr was <0.0001%. More than 98% labeling yield of 90Y-EDTMP was confirmed by paper chromatography. 相似文献
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Klaus Brodersen 《Fresenius' Journal of Analytical Chemistry》1958,163(2):136
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A. Kurtenacker 《Fresenius' Journal of Analytical Chemistry》1962,187(1):40-41
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A remarkable extraction chromatographic method for the preparation of90Y of high radiochemical purity has been developed. The generator consists of silica gel coated crown ether. It functions as a strong adsorber for90Sr and in the meantime high purity of90Y is eluted with a dilute solution of picric acid after a suitable period. The experiments indicated that DC18C6 coated silica gel is better than that of DB18C6 coated. The extraction capacity of strontium on 3.8% DC18C6 coated silica gel is 5.6 mg Sr/g silica gel. Yttrium is obtained with more than 95% milking yield with radionuclide purity greater than 99.9%. The extraction chromatographic generator does not change its characteristics even after 5 elutions. 相似文献
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A simple solvent extraction method has been developed for the separation of90Y from90Sr. Crown ether dissolved in chloroform was used as a selective reagent and organic picrate anion was chosen as a counter ion. The effect of various factors on the extraction separation of strontium and yttrium in the system have been studied. The extraction equilibrium constant of strontium logK
ex=9.15 was obtained from the study of the distribution coefficient versus the crown ether concentration. The separation method was simple, resulted high purity (>99.9%) and quantitative yield, and took less than half an hour. 相似文献
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Chirag K. Vyas Pranav M. Joshirao Vijay K. Manchanda 《Journal of Radioanalytical and Nuclear Chemistry》2014,300(1):445-450
The distribution coefficient measurements on Y(III) and Sr(II) were performed using ditertiarybutyl dicyclohexano 18-crown-6 (Sr-selective resin) and N,N,N′,N′-tetraoctyldiglycolamide (Y-selective resin) in HNO3, HCl and HClO4 media. Separation factors (90Y/90Sr) based on distribution coefficient data suggested that perchloric acid is distinctly better medium as compared to nitric acid/hydrochloric acid. The mechanism of extraction changes with the nature and concentration of acid and is responsible for the high selectivity in perchloric acid medium. Sequential column studies were carried out on tracers (radioactive/stable) employing Sr-selective/Y-selective extraction chromatographic resins as stationary phases. The final elution of 90Y was done in 0.01 M EDTA at pH 4.0 which can be used for clinical applications after radiochemical processing. 相似文献
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Usha Pandey Yogendra Kumar Ashutosh Dash 《Journal of Radioanalytical and Nuclear Chemistry》2014,300(1):355-360
While the extraction paper chromatography (EPC) technique constitutes a novel paradigm for the determination of few Becquerels of 90Sr in MBq quantities of 90Y obtained from 90Sr/90Y generator, validation of the technique is essential to ensure its usefulness as a real time analytical tool. With a view to explore the relevance and applicability of EPC technique as a real time quality control (QC) technique for the routine estimation of 90Sr content in generator produced 90Y, a systematic validation study was carried out diligently not only to establish its worthiness but also to broaden its horizon. The ability of the EPC technique to separate trace amounts of Sr2+ in the presence of large amounts of Y3+ was verified. The specificity of the technique for Y3+ was demonstrated with 90Y obtained by neutron irradiation. The method was validated under real experimental conditions and compared with a QC method described in US Pharmacopeia for detection of 90Sr levels in 90Y radiopharmaceuticals. 相似文献
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Tenjović Branislava Stojković Ivana Nikolov Jovana Todorović Nataša Spasojević Jelena Agbaba Jasmina Pajić Marija Krmar Miodrag 《Journal of Radioanalytical and Nuclear Chemistry》2019,319(3):679-686
Journal of Radioanalytical and Nuclear Chemistry - A separation procedure was developed and implemented for the isolation of gold (Au) and platinum (Pt) radionuclides from deuteron irradiated Pt... 相似文献
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P. Vaňura V. Jedináková-Křížová M. Vobecký 《Journal of Radioanalytical and Nuclear Chemistry》2006,267(2):501-503
Summary An extraction technique for the separation of 90Sr from a high excess of90Y has been developed. This procedure can be used for the determination of trace amounts of90Sr in90Y prepared by a radiochemical90Y/90Sr generator by liquid scintillation. 相似文献
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G. Manjón F. El-Daoushy R. García-Tenorio 《Journal of Radioanalytical and Nuclear Chemistry》1997,219(1):95-98
For a better understanding of the behaviour of90Sr in aquatic systems, this -emitter has been determined in the different layers of a lake sediment core which has been previously dated using the well established210Pb dating method. For this, a radiochemical technique has been developed for the isolation of strontium from the sediment samples and for its activity measurement with a low-level gas-flow proportional counter. A conservative behaviour of90Sr in the water column remaining dissolved in the water body, can be inferred from the data obtained. Consequently, a possible90Sr transport pathway through the outflowing waters of the lake can be deduced. 相似文献
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