1
|
Mahanty B, Satpati A, Mohapatra P. Development of a potentiometric sensor for europium(III) based on N, N, N′, N′-tetraoctyldiglycolamide (TODGA) as the ionophore. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.11.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
2
|
Determination of calcium and iron in silicon and uranium silicide using ion chromatography. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3551-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
3
|
Evaluation of lithium separation by dispersive liquid–liquid microextraction using benzo-15-crown-5. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-1742-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
4
|
Singh G, Singhal RK, Malav RK, Fulzele A, Prakash A, Afzal M, Panakkal JP. A comparative study on dissolution rate of sintered (Th-U)O 2 pellets in by microwave and conventional heating. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2011; 3:622-627. [PMID: 32938082 DOI: 10.1039/c0ay00630k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
ThO2 with approximately 3% 233UO2 is the proposed fuel for the Advanced Heavy Water Reactor (AHWR) and characterized as a mixed oxide (MOX) fuel. Due to the existence of a single oxidation state, quantitative dissolution of MOX samples like (Th-U)O2 and (Th-Pu)O2 is a challenging task for any analytical chemist. However, dissolution is a pre-requisite for complete characterization of the fuel. The present paper describes a detailed study carried out on the comparison of dissolution of sintered (Th-U)O2 mixed oxide pellets, in 16 M HNO3 using microwave and conventional heating techniques, under reflux conditions. The study was carried out with variation of parameters such as concentration of HF and UO2 substitution in the MOX solid solution. The concentration of dissolved U and Th was determined by modified Davies and Gray potentiometric titration and Th-EDTA complexometric titration using xylenol orange as the titration end point indicator respectively. Experimental results clearly indicate that the microwave heating assisted dissolution rate is 2 to 3 times higher than the conventional infrared heating assisted dissolution rate, for sintered pellets. The concentration of HF is a critical parameter, an excess leads to precipitation of insoluble ThF4. The concentration of HF was optimized to 0.025 M. Experimental results also clearly show that at this concentration of HF in 16 M HNO3, a higher substitution of UO2 in MOX solid solution also facilitates the dissolution process. Different trace metal impurities were determined in the MOX samples after dissolving by microwave and infra red heating techniques and it was observed that the results are comparable.
Collapse
Affiliation(s)
- G Singh
- Advanced Fuel Fabrication Facility, BARC, Tarapur, 401502, India.
| | - R K Singhal
- Advanced Fuel Fabrication Facility, BARC, Tarapur, 401502, India.
- Analytical Chemistry Division BARC, Mumbai, 400084, India
| | - R K Malav
- Advanced Fuel Fabrication Facility, BARC, Tarapur, 401502, India.
| | - A Fulzele
- Advanced Fuel Fabrication Facility, BARC, Tarapur, 401502, India.
| | - A Prakash
- Advanced Fuel Fabrication Facility, BARC, Tarapur, 401502, India.
| | - Md Afzal
- Advanced Fuel Fabrication Facility, BARC, Tarapur, 401502, India.
| | - J P Panakkal
- Advanced Fuel Fabrication Facility, BARC, Tarapur, 401502, India.
| |
Collapse
|
5
|
Kinetic determination of traces of Th(IV) on the basis of its catalytic effect in environmental water samples. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1009-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Wiltsche H, Prattes K, Knapp G. A novel approach for an automated liquid/liquid extraction system—principle and application for the determination of several trace contaminants in highly alloyed steels and base alloys. Anal Bioanal Chem 2011; 400:2329-38. [DOI: 10.1007/s00216-011-4666-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 01/01/2011] [Accepted: 01/04/2011] [Indexed: 11/24/2022]
Affiliation(s)
- Helmar Wiltsche
- Institute of Analytical Chemistry and Food Chemistry, Graz University of Technology, Graz, Austria.
| | | | | |
Collapse
|
7
|
Kelkar A, Prakash A, Afzal M, Panakkal JP, Kamath HS. Simultaneous determination of alkali, alkaline earth and transition metal elements in uranium and thorium based nuclear fuel materials by single column ion chromatography. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0847-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|