Assistant Controller of Examinations (2nd campus)
During my Ph.D. tenure I have carried out my thesis work entitled “Trace And Ultratrace Scale Studies On Detection And Dynamics Of Fourth Period Elements”. I have used both nuclear and analytical techniques throughout the thesis work. These include namely high purity germanium (HPGe) detector and Compton suppressor system (CSS), Inductively Coupled Plasma Optical Emission Spectroscopy (ICPOES) and Wavelength Dispersive X-ray Fluorescence (WDXRF) for quantitative analysis. I am well trained to smoothly operate all the above mentioned instruments with full confidence. Besides this, I have also hand-on experience to perform beam line experiment for the production of radioisotopes. For this purpose many times I used our BARC-TIFR pelletron accelerator beam facility at Mumbai, and Variable Energy Cyclotron Centre (VECC) beam facility at Kolkata. After that, to carry out all radiochemical analysis I have used our lab installed CANBERRA well type and BALTIC portable type HPGe detector. Noteworthy to mention that I have developed a simplest non-destructive method of potassium determination in NIST SRMs and common vegetable using Compton Suppressor System during my thesis work. To cross check the efficacy of the developed method, I have analyzed the potassium content of the same set of SRM samples by two other methods, namely Inductively Coupled Plasma Optical Emission Spectrometry (ICPOES) (Model no. iCAP 6500 duo, Thermo Fisher Scientific) and Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF) (Make Thermo Scientific, model ARI OPTIM’X). Along with these, I have also studied the uptake of As and Se in different parts of common plant system viz. Mung (V. radiate) by ICPOES to have an insight on the migration and bio-magnification behavior of As and Se. Mars Xpress microwave digester was used for sample preparation.
After the thesis submission I work on synthesis, characterization and applications of anisotropic plasmonic nanoparticles. For characterization and analysis I routinely use several analytical instruments which include: (i) UV-vis spectrophotometer, (ii) Fluorescence spectrophotometer, (iii) Transmission electron microscope (TEM), (iv) X-ray diffraction (XRD), (v) Energy dispersive X-ray spectroscopy (EDX), (vi) Selected-area electron diffraction (SAED), and (vi) Raman spectrophotometer. Among all these optical and spectroscopic instrumentation, nanomaterial-based Raman spectroscopy which commonly known as Surface Enhanced Rama Spectroscopy (SERS) is a state-of-the-art spectroscopic technique finds enormous application in trace level sensing and diagnosis due to its unprecedented signal enhancement ability and finger print spectral information deliverability. UV–visible absorption spectroscopy is used in our study to get the information about the optical and electronic structure of nanoparticles, as the absorption bands are related to the diameter and aspect ratio of metal nanoparticles. TEM is one of the most essential instruments I use frequently to monitor the shape and size of the synthesized nanoparticles.
Along with my usual research activities, I have attended several workshops to broaden my knowledge in analytical instrumentation. As discussed previously, I have direct hand-on experience to handle several sophisticated high sensitive modern analytical instruments and have clear knowledge about their working principle.
School attended during my research period:
First School on Analytical Chemistry-2010, during 20-26 November, 2010 at Bhabha Atomic Research Centre, Mumbai, India.
Country Visited: Avignon, France, May 22-24, 2013 to participate Internationatioal Symposium.
B.Sc. Honours in Chemistry (Jhargram Raj College, Vidyasagar University)
M.Sc. in Chemistry (IIT Madras)
Post M.Sc. Diploma, Ph.D. and Research Associate from Saha Institute of Nuclear Physics
Qualified UGC-CSIR Junior Research Fellowship, Govt. of India, December, 2007
Research / Administrative Experience+
Review Work: I have done a review during my Post M.Sc. course work titled “Naturally Occurring Radioactive Materials (NORM)” covering the application of the commonly used ?-ray detectors, namely high purity germanium (HPGe) detector and sodium iodide thallium NaI(Tl) scintillation detector.
Ph.D. : Ph.D. degree awarded from University of Calcutta in Chemistry (Analytical) and Research work done at Saha Institute of Nuclear Physics.
Instruments used during my research period: High purity germanium detector, Compton suppressor system, Inductively Coupled Plasma Optical Emission Spectroscopy, Wavelength Dispersive X-ray Fluorescence, UV-vis spectrophotometer, Transmission electron microscope, Surface Enhanced Rama Spectroscopy, BARC-TIFR pelletron accelerator beam facility at Mumbai, and Variable Energy Cyclotron Centre (VECC) beam facility at Kolkata.
More than 6 years, I worked in the department of Controller of Examinations on Examinations related activity under Bankura University as well as in the University of Burdwan mainly examinations, result processing, Marksheet verification and scripts management of UG and PG of different semesters (2016- 27th July, 2022).
Teaching / Other Experience+
During my Ph.D. tenure which was more than 7 years, we had arranged many School/workshop/conferences and where I was deeply involved as a member of Local Organizing Committee (LOC) of the 2nd International Conference on Application of Radiotracers in Chemical, Environmental and Biological Sciences (ARCEBS-10), held on 7-13 November, 2010 at SINP, Kolkata and a member of Local Organizing Committee (LOC) of the 3rd International Conference on Application of RadiotraCers and Energetic Beams in Sciences (ARCEBS-14), held on 12-18 January, 2014 at Fort Raichak, Kolkata. While performing above mentioned duties as a member, I became experienced in many non academic as well as administrative work during my Ph.D. tenure.
Post Graduate Supervision+
List of Publications in International Journals:
1. Ajoy Mandal and Susanta Lahiri: Separation of 134Cs and 133Ba radionuclides by calcium alginate beads. Journal of Radioanalytical and Nuclear Chemistry 290 (2011) 115–118.
2. Ajoy Mandal and Susanta Lahiri: Production and separation of no-carrier-added 73As and 75Se from7Li irradiated germanium oxide target. Radiochim Acta 100 (2012) 865-870.
3. Swadesh Mandal, Ajoy Mandal and Susanta Lahiri: Separation of nca 123,124,125,126I from alpha particle induced the natural antimony trioxide target. Journal of Radioanalytical and Nuclear Chemistry 292 (2012) 579-584.
4. Swadesh Mandal, Ajoy Mandal and Susanta Lahiri: Species dependent extraction of 99Mo. Journal of Radioanalytical and Nuclear Chemistry 295 (2013) 861-863.
5. Moumita Maiti, Ajoy Mandal, and Susanta Lahiri: An Improved Non-destructive Method of Potassium Determination. Applied Radiation and Isotopes 71 (2013) 37-40.
6. Swadesh Mandal and Ajoy Mandal: Separation of no-carrier-added 99mTcO4? from 99Mo-99mTc equilibrium mixture by PEG based aqueous biphasic separation technique using sodium/potassium salts of citric and tartaric acid. Journal of Radioanalytical and Nuclear Chemistry 299 (2014) 1225-1230.
7. Swadesh Mandal and Ajoy Mandal: A simple and sensitive separation technique of 99Mo-99mTc from their equilibrium mixture. Journal of Radioanalytical and Nuclear Chemistry 301 (2014) 297-299.
8. Ajoy Mandal, Maireyee Bhattacharya, Denis Kuznetsov, Tapas Ghosh, Sudeshna Das Chakraborty, Biswarup Satpati, Vsevolod Mazov and Dulal Senapati: Decoupled in-plane Dipole Resonance Modulated Colorimetric Assay-Based Optical Ruler for Ultra-Trace Gold (Au) Detection. Scientific Reports 8(2018) 868.
9. Swadesh Mandal, Nabanita Naskar, Ajoy Mandal, Kaustab Ghosh and Susanta Lahiri: Separation of 109Cd impurity from a decayed 110m/108mAg Source. Journal of Radioanalytical and Nuclear Chemistry 330 (2021) 1281-1284.
Papers presented in National and International conferences/seminar:
1. Ajoy Mandal and Susanta Lahiri: Separation of 134Cs and 133Ba radionuclides by calcium alginate beads, Second International conference on Application of Radiotracers in Chemical, Environmental and Biological Sciences (ARCEBS-10), Saha Institute of Nuclear Physics, Kolkata, India, November 7-13, 2010.
2. Susanta Lahiri and Ajoy Mandal: Aqueous Biphasic Extraction: a Powerful Analytical Tool Probed through Radiotracer Technique, Fourth International Symposium on Nuclear Analytical Chemistry (NAC-IV), Bhabha Atomic Research Centre , Trombey, Mumbai, India, November 15-19, 2010.
3. Ajoy Mandal , Moumita Maiti and Susanta Lahiri: Revisiting the classical chemical data: solubility of GeO2, National Seminar on Inorganic Chemistry-2011 and The Celebration of 150th Birth Anniversary of Acharya P. C. Ray, Jadavpur University, Kolkata, Julay 8-9, 2011.
4. Ajoy Mandal and Susanta Lahiri: Separation of 61Cu from alpha particle irradiated cobalt target by trioctylamine, 3rd-International Nuclear Chemistry Congress, Sicily- Italy 18-23 September 2011.
5. Ajoy Mandal and Susanta Lahiri: Production and separation of no-carrier-added 73As and 75Se from7Li irradiated germanium oxide target, The fifth DAE-BRNS Symposium on Emerging Trendsin Separation Science and Technology (SESTEC-2012), SVKM’s Mithibai College, VileParle, Mumbai, India, February 27–March 01, 2012.
6. Ajoy Mandal, Kaustab Ghosh, Moumita Maiti and Susanta Lahiri: Studies on As and Se uptake by Mung bean, The 5th International FESTEM Symposium on Trace Elements and Minerals, Avignon (France), May 22-24, 2013.
7. Ajoy Mandal, Moumita Maiti, Ranak Das and Susanta Lahiri: Determination of Potassium in Common Vegetables Using Compton Suppressed Gamma Spectroscopy, Third International conference on Application of RadiotraCers and Energetic Beams in Sciences (ARCEBS-14), FFort Raichak, Kolkata, January 12-18, 2014.
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