Dr. Hemlata K. Bagla is the Nuclear and Radiochemist , Principal of K. C. College, one of the premier institutions of Mumbai, India. She is also the Head of Chemistry and Nuclear
Journal of Radioanalytical and Nuclear Chemistry, 2013
ABSTRACT An attempt has been made in the present work to investigate the role of anion for the up... more ABSTRACT An attempt has been made in the present work to investigate the role of anion for the uptake of Am(III)/Eu(III)/U(VI) by extraction chromatography (EXC) resin incorporating tetra-n-octyl-3-oxapentanediamide, commonly referred to as tetra-octyl diglycolamide (TODGA). In contrast to the nitric acid, perchloric acid medium favors extraction of trivalent metal ions even at low acidity (pH 2) and is almost insensitive to the acidity up to 5 M. Exceptionally large distribution coefficients (105–106) in the wide range of perchlorate concentration (10−2–5 M) is quite unusual and is by far the largest reported in the literature for Am(III)/Eu(III). Thermodynamic data suggests the possibility of inner sphere/cation exchange mechanism involving TODGA aggregates at higher acidity but outer sphere/cation exchange mechanism at low acidity for Eu(III). There is a possibility of employing TODGA based EXC resin for the remediation of liquid waste (contaminated with long lived transuranics like 241/243Am and 245Cm) in the wide range of acidity.
Journal of Radioanalytical and Nuclear Chemistry, 2007
In the present investigation, the selective adsorption of silver on synthetic inorganic ion excha... more In the present investigation, the selective adsorption of silver on synthetic inorganic ion exchanger, zinc(II) ferrocyanide, has been established by batch method, under specific conditions, using 110mAg as a tracer. The efficiency of adsorption has been determined by γ-ray spectrometry and was found to be greater than 96%. The Ag(I) uptake by the exchanger has also been evaluated. The selectivity
Soil is a heavenly resource, a living, breathing and ever changing dynamic ecosystem. Retrogressi... more Soil is a heavenly resource, a living, breathing and ever changing dynamic ecosystem. Retrogression and degradation of soil system is the result of continuous encroachment done by global anthropogenic activities. Mother earth's monition has increased the local concern to explore solution for the healthy sustainability of soil. At this hour of need it is crucial to regain the health of
Journal of Radioanalytical and Nuclear Chemistry, 2007
Indium(III) in small doses stimulates the metabolism of human beings. Its compounds are regarded ... more Indium(III) in small doses stimulates the metabolism of human beings. Its compounds are regarded toxic as it damages the heart, kidney and liver and it may also be teratogenic. As an established infection-imaging modality, nuclear medicine plays a vital health-care role in the diagnosis and subsequent effective treatment of this condition. Several techniques in nuclear medicine significantly aid infection diagnosis,
Iop Conference Series: Materials Science and Engineering, 2009
Corundum α – Al2O3 single crystals is an important gemstone known by different names depending on... more Corundum α – Al2O3 single crystals is an important gemstone known by different names depending on the colour it exhibits which in turn depends on the impurities that are present. The colour depends on the valence state of the impurity element present in corundum (Cr3+ in ruby, Fe3+ in yellow sapphire and Fe-Ti complex in blue sapphire). There have been
IOP Conference Series: Materials Science and Engineering, 2009
... MD Sastry1*, Sandesh N. Mane1, Mahesh P. Gaonkar1, H. Bagla2, J. Panjikar1 and KT Ramachandra... more ... MD Sastry1*, Sandesh N. Mane1, Mahesh P. Gaonkar1, H. Bagla2, J. Panjikar1 and KT Ramachandran1 1 Gemmological Institute of India,304 Sukhsagar ... Wang W, Owen Bordelon and Kane RE 2003 Gems & Gemology Summer 39 84-135 [3] Sastry MD, Mane SN, Gaonkar MP ...
We report the first optically stimulated luminescence (OSL; blue light stimulated luminescence (B... more We report the first optically stimulated luminescence (OSL; blue light stimulated luminescence (BLSL) and infrared light stimulated luminescence (IRSL)) results on colored diamonds and present experimental evidence that electron beam treatment (EBT) ...
Journal of Radioanalytical and Nuclear Chemistry, 2013
ABSTRACT An attempt has been made in the present work to investigate the role of anion for the up... more ABSTRACT An attempt has been made in the present work to investigate the role of anion for the uptake of Am(III)/Eu(III)/U(VI) by extraction chromatography (EXC) resin incorporating tetra-n-octyl-3-oxapentanediamide, commonly referred to as tetra-octyl diglycolamide (TODGA). In contrast to the nitric acid, perchloric acid medium favors extraction of trivalent metal ions even at low acidity (pH 2) and is almost insensitive to the acidity up to 5 M. Exceptionally large distribution coefficients (105–106) in the wide range of perchlorate concentration (10−2–5 M) is quite unusual and is by far the largest reported in the literature for Am(III)/Eu(III). Thermodynamic data suggests the possibility of inner sphere/cation exchange mechanism involving TODGA aggregates at higher acidity but outer sphere/cation exchange mechanism at low acidity for Eu(III). There is a possibility of employing TODGA based EXC resin for the remediation of liquid waste (contaminated with long lived transuranics like 241/243Am and 245Cm) in the wide range of acidity.
Journal of Radioanalytical and Nuclear Chemistry, 2007
In the present investigation, the selective adsorption of silver on synthetic inorganic ion excha... more In the present investigation, the selective adsorption of silver on synthetic inorganic ion exchanger, zinc(II) ferrocyanide, has been established by batch method, under specific conditions, using 110mAg as a tracer. The efficiency of adsorption has been determined by γ-ray spectrometry and was found to be greater than 96%. The Ag(I) uptake by the exchanger has also been evaluated. The selectivity
Soil is a heavenly resource, a living, breathing and ever changing dynamic ecosystem. Retrogressi... more Soil is a heavenly resource, a living, breathing and ever changing dynamic ecosystem. Retrogression and degradation of soil system is the result of continuous encroachment done by global anthropogenic activities. Mother earth's monition has increased the local concern to explore solution for the healthy sustainability of soil. At this hour of need it is crucial to regain the health of
Journal of Radioanalytical and Nuclear Chemistry, 2007
Indium(III) in small doses stimulates the metabolism of human beings. Its compounds are regarded ... more Indium(III) in small doses stimulates the metabolism of human beings. Its compounds are regarded toxic as it damages the heart, kidney and liver and it may also be teratogenic. As an established infection-imaging modality, nuclear medicine plays a vital health-care role in the diagnosis and subsequent effective treatment of this condition. Several techniques in nuclear medicine significantly aid infection diagnosis,
Iop Conference Series: Materials Science and Engineering, 2009
Corundum α – Al2O3 single crystals is an important gemstone known by different names depending on... more Corundum α – Al2O3 single crystals is an important gemstone known by different names depending on the colour it exhibits which in turn depends on the impurities that are present. The colour depends on the valence state of the impurity element present in corundum (Cr3+ in ruby, Fe3+ in yellow sapphire and Fe-Ti complex in blue sapphire). There have been
IOP Conference Series: Materials Science and Engineering, 2009
... MD Sastry1*, Sandesh N. Mane1, Mahesh P. Gaonkar1, H. Bagla2, J. Panjikar1 and KT Ramachandra... more ... MD Sastry1*, Sandesh N. Mane1, Mahesh P. Gaonkar1, H. Bagla2, J. Panjikar1 and KT Ramachandran1 1 Gemmological Institute of India,304 Sukhsagar ... Wang W, Owen Bordelon and Kane RE 2003 Gems & Gemology Summer 39 84-135 [3] Sastry MD, Mane SN, Gaonkar MP ...
We report the first optically stimulated luminescence (OSL; blue light stimulated luminescence (B... more We report the first optically stimulated luminescence (OSL; blue light stimulated luminescence (BLSL) and infrared light stimulated luminescence (IRSL)) results on colored diamonds and present experimental evidence that electron beam treatment (EBT) ...
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