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RISS 인기검색어
- 검색키워드
- 저자 : Matloobi, Parisa (검색결과 4 건)
- 무료
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La(III) Selective Membrane Sensor Based on a New N-N Schiff's Base
Ganjali, Mohammad Reza,Matloobi, Parisa,Ghorbani, Maryam,Norouzi, Parviz,Salavati-Niasari, Masoud Korean Chemical Society 2005 Bulletin of the Korean Chemical Society Vol.26 No.1
Bis(2-methylbenzaldehyde)butane-2,3-dihydrazone(TDSB) was used as new N-N Schiff's base which plays the role of an excellent ion carrier in the construction of a La(III) membrane sensor. The best performance was obtained with a membrane containing, 30% poly(vinyl chloride), 60% benzyl acetate, 6% TDSB and 4% sodium tetraphenyl borate. This sensor reveals a very good selectivity towards La(III) ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The proposed electrode exhibits a Nernstian behavior (with slope of 19.8 mV per decade) over a wide concentration range (1.0 ${\times}$ 10$^{-5}$-1.0 ${\times}$ 10$^{-1}$ M). The detection limit of the sensor is 7.0 ${\times}$ 10$^{-6}$ M. It has a very short response time, in the whole concentration range ($\sim$5 s), and can be used for at least twelve weeks in the pH range of 3.0-9.4. The proposed sensor was successfully applied as an indicator electrode for the potentiometric titration of a La(III) solution, with EDTA. It was also successfully applied in the determination of fluoride ions in three mouth wash preparations.
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La(III) Selective Membrane Sensor Based on a New N-N Schiff's Base
Mohammad Reza Ganjali*,Parisa Matloobi,Maryam Ghorbani,Parviz Norouzi,Masoud Salavati-Niasari 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.1
Bis(2-methylbenzaldehyde)butane-2,3-dihydrazone(TDSB) was used as new N-N Schiff's base which plays the role of an excellent ion carrier in the construction of a La(III) membrane sensor. The best performance was obtained with a membrane containing, 30% poly(vinyl chloride), 60% benzyl acetate, 6% TDSB and 4% sodium tetraphenyl borate. This sensor reveals a very good selectivity towards La(III) ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The proposed electrode exhibits a Nernstian behavior (with slope of 19.8 mV per decade) over a wide concentration range (1.0 × 10−5-1.0 × 10−1 M). The detection limit of the sensor is 7.0 × 10−6 M. It has a very short response time, in the whole concentration range (~5 s), and can be used for at least twelve weeks in the pH range of 3.0-9.4. The proposed sensor was successfully applied as an indicator electrode for the potentiometric titration of a La(III) solution,with EDTA. It was also successfully applied in the determination of fluoride ions in three mouth wash preparations.
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NUCLEAR DATA MEASUREMENT OF <sup>186</sup>RE PRODUCTION VIA VARIOUS REACTIONS
Bidokhti, Pooneh Saidi,Sadeghi, Mahdi,Fateh, Behrooz,Matloobi, Mitra,Aslani, Gholamreza Korean Nuclear Society 2010 Nuclear Engineering and Technology Vol.42 No.5
Rhenium-186, having a half-life of 90.64 h, is an important radionuclide, used in metabolic radiotherapy and radio immunotherapy. $^{186}Re$ hydroxyethylidene diphosphonate (HEDP) is a new compound used for the palliation of painful skeletal metastases. Its production is achieved via charged-particle-induced reactions; the data are available in EXFOR library. For the work discussed in this paper, production of $^{186}Re$ was done via $^{nat}W(p,n)^{186}Re$ nuclear reaction. Pellets of $^{nat}W$ were used as targets and were irradiated with 15, 17.5, 20, 22.5, 25 MeV proton beams at 5 ${\mu}A$ current. The radiochemical separation was performed by the ion exchange chromatography method. The production yield achieved at 25 MeV was 1.91 $MBq{\cdot}{\mu}A^{-1}{\cdot}h^{-1}$. Excitation functions for the $^{186}Re$ radionuclide, via $^{186}W(p,n)^{186}Re$ and $^{186}W(d,2n)^{186}Re$ reactions were calculated by ALICE-ASH and TALYS-1.0 codes to validate and fit the experimental data and to obtain a recommended set of data for $^{186}W(p,n)^{186}Re$ reaction. Required thickness of the targets was obtained by SRIM code for each reaction.
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NUCLEAR DATA MEASUREMENT OF 186RE PRODUCTIONVIA VARIOUS REACTIONS
POONEH SAIDI BIDOKHTI,MAHDI SADEGHI,BEHROOZ FATEH,MITRA MATLOOBI,GHOLAMREZA ASLAN 한국원자력학회 2010 Nuclear Engineering and Technology Vol.42 No.5
Rhenium-186, having a half-life of 90.64 h, is an important radionuclide, used in metabolic radiotherapy and radioimmunotherapy. 186Re hydroxyethylidene diphosphonate (HEDP) is a new compound used for the palliation of painful skeletalmetastases. Its production is achieved via charged-particle-induced reactions; the data are available in EXFOR library. For thework discussed in this paper, production of 186Re was done via natW(p,n)186Re nuclear reaction. Pellets of natW were used astargets and were irradiated with 15, 17.5, 20, 22.5, 25 MeV proton beams at 5 µA current. The radiochemical separation wasperformed by the ion exchange chromatography method. The production yield achieved at 25 MeV was 1.91 MBq·µA-1·h-1. Excitation functions for the 186Re radionuclide, via 186W(p,n)186Re and 186W(d,2n)186Re reactions were calculated by ALICE-ASH and TALYS-1.0 codes to validate and fit the experimental data and to obtain a recommended set of data for 186W(p,n)186Re reaction. Required thickness of the targets was obtained by SRIM code for each reaction.
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