为制备适用于68Ge-68Ga发生器的吸附剂,用热HNO3氧化金属锡制备SnO2,对SnO2吸附剂的制备工艺及其性能进行了研究。制备得到以SnO2作为吸附剂的68Ge-68Ga发生器,并对其吸附行为与淋洗效率进行了研究。结果表明,600℃高温焙烧获得的SnO2...为制备适用于68Ge-68Ga发生器的吸附剂,用热HNO3氧化金属锡制备SnO2,对SnO2吸附剂的制备工艺及其性能进行了研究。制备得到以SnO2作为吸附剂的68Ge-68Ga发生器,并对其吸附行为与淋洗效率进行了研究。结果表明,600℃高温焙烧获得的SnO2适于用作68Ge-68Ga发生器的吸附剂,其对68Ge有较好的选择性吸附,用8 mL 1 mol/L HCl淋洗,68Ga的淋洗效率为60%~80%,68Ge的漏穿率大部分为10-3%量级。展开更多
By using a microscopic sdIBM-2+2q.p. approach which is the phenomenological core plus two-quasi-particle model and the experimental single-particle energies, the levels of the ground-band, β-band, γ-band, and partia...By using a microscopic sdIBM-2+2q.p. approach which is the phenomenological core plus two-quasi-particle model and the experimental single-particle energies, the levels of the ground-band, β-band, γ-band, and partial two-quasi-particle states on 64~68 Ge isotopes are successfully reproduced. Based on the phenomenological model and microscopic approach, it has been deduced that no s-boson in the nucleus is breaking up and aligning; and that when one d-boson does, the minimum aligned energy can be calculated. This paper explicitly indicates that, with the increase of neutron number, an evolution process of PPT objectes, i.e. from the two-quasi-proton states (on64Ge nucleus) to the two-quasi-neutron states (on 68Ge nucleus) may take place in even Ge isotopes.展开更多
In the past ^68Ge （Germanium-68） was purified with toxic organic solvents in liquid-liquid extractions making the product unacceptable by the FDA （food and drug Administration） for human use. The authors report in...In the past ^68Ge （Germanium-68） was purified with toxic organic solvents in liquid-liquid extractions making the product unacceptable by the FDA （food and drug Administration） for human use. The authors report initial studies utilizing three or four columns consisting of sequences of AG 1, AG50, Chelex 100 and/or Sephadex G25 resins. Five purification methods were examined and a separation consisting of the sequence： AG 1-Chelex100-Sephedex G25 provided 87% recovery of germanium. Fractionation of the elution resulted in high germanium concentrations.展开更多
文摘为制备适用于68Ge-68Ga发生器的吸附剂,用热HNO3氧化金属锡制备SnO2,对SnO2吸附剂的制备工艺及其性能进行了研究。制备得到以SnO2作为吸附剂的68Ge-68Ga发生器,并对其吸附行为与淋洗效率进行了研究。结果表明,600℃高温焙烧获得的SnO2适于用作68Ge-68Ga发生器的吸附剂,其对68Ge有较好的选择性吸附,用8 mL 1 mol/L HCl淋洗,68Ga的淋洗效率为60%~80%,68Ge的漏穿率大部分为10-3%量级。
基金Supported by the Science Foundation of the Science-Technology Department of Guizhou Province China (Grant No. Qian-ji-he-ji-zi [2002] 3025)
文摘By using a microscopic sdIBM-2+2q.p. approach which is the phenomenological core plus two-quasi-particle model and the experimental single-particle energies, the levels of the ground-band, β-band, γ-band, and partial two-quasi-particle states on 64~68 Ge isotopes are successfully reproduced. Based on the phenomenological model and microscopic approach, it has been deduced that no s-boson in the nucleus is breaking up and aligning; and that when one d-boson does, the minimum aligned energy can be calculated. This paper explicitly indicates that, with the increase of neutron number, an evolution process of PPT objectes, i.e. from the two-quasi-proton states (on64Ge nucleus) to the two-quasi-neutron states (on 68Ge nucleus) may take place in even Ge isotopes.
文摘In the past ^68Ge （Germanium-68） was purified with toxic organic solvents in liquid-liquid extractions making the product unacceptable by the FDA （food and drug Administration） for human use. The authors report initial studies utilizing three or four columns consisting of sequences of AG 1, AG50, Chelex 100 and/or Sephadex G25 resins. Five purification methods were examined and a separation consisting of the sequence： AG 1-Chelex100-Sephedex G25 provided 87% recovery of germanium. Fractionation of the elution resulted in high germanium concentrations.
