The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform
Lallan Kumar Tiwary - One of the best experts on this subject based on the ideXlab platform.
-
Influence of sodium Bis (2-Ethyl-1-Hexyl) sulfosuccinate/isooctane/water microemulsions on the hydrolysis of Salicylhydroxamic Acid
Journal of Molecular Liquids, 2003Co-Authors: Kallol K. Ghosh, Lallan Kumar TiwaryAbstract:Abstract The kintetics of Acid catalyzed hydrolysis of Salicylhydroxamic Acid (SHA) in sodium bis (2-ethyl-1-hexyl) sulfosuccinate (AOT)/isooctane/water microemulsions has been studied at 328 K. Enhancement of reaction rate has been found which depends on H 2 O/AOT mole ratio ω with a maximum at ω = 10.7. The effect of AOT concentration on reaction rate has been studied. The pseudo-first order rate constant decreases with [AOT] at constant ω = 12.3. Activation parameters have been obtained from the temperature dependence of the rate constant in the microemulsion. The results are discussed in terms of the chemical properties of the water molecules encased in the microemulsion droplets.
-
influence of sodium bis 2 ethyl 1 hexyl sulfosuccinate isooctane water microemulsions on the hydrolysis of Salicylhydroxamic Acid
Journal of Molecular Liquids, 2003Co-Authors: Kallol K. Ghosh, Lallan Kumar TiwaryAbstract:Abstract The kintetics of Acid catalyzed hydrolysis of Salicylhydroxamic Acid (SHA) in sodium bis (2-ethyl-1-hexyl) sulfosuccinate (AOT)/isooctane/water microemulsions has been studied at 328 K. Enhancement of reaction rate has been found which depends on H 2 O/AOT mole ratio ω with a maximum at ω = 10.7. The effect of AOT concentration on reaction rate has been studied. The pseudo-first order rate constant decreases with [AOT] at constant ω = 12.3. Activation parameters have been obtained from the temperature dependence of the rate constant in the microemulsion. The results are discussed in terms of the chemical properties of the water molecules encased in the microemulsion droplets.
Kallol K. Ghosh - One of the best experts on this subject based on the ideXlab platform.
-
Influence of sodium Bis (2-Ethyl-1-Hexyl) sulfosuccinate/isooctane/water microemulsions on the hydrolysis of Salicylhydroxamic Acid
Journal of Molecular Liquids, 2003Co-Authors: Kallol K. Ghosh, Lallan Kumar TiwaryAbstract:Abstract The kintetics of Acid catalyzed hydrolysis of Salicylhydroxamic Acid (SHA) in sodium bis (2-ethyl-1-hexyl) sulfosuccinate (AOT)/isooctane/water microemulsions has been studied at 328 K. Enhancement of reaction rate has been found which depends on H 2 O/AOT mole ratio ω with a maximum at ω = 10.7. The effect of AOT concentration on reaction rate has been studied. The pseudo-first order rate constant decreases with [AOT] at constant ω = 12.3. Activation parameters have been obtained from the temperature dependence of the rate constant in the microemulsion. The results are discussed in terms of the chemical properties of the water molecules encased in the microemulsion droplets.
-
influence of sodium bis 2 ethyl 1 hexyl sulfosuccinate isooctane water microemulsions on the hydrolysis of Salicylhydroxamic Acid
Journal of Molecular Liquids, 2003Co-Authors: Kallol K. Ghosh, Lallan Kumar TiwaryAbstract:Abstract The kintetics of Acid catalyzed hydrolysis of Salicylhydroxamic Acid (SHA) in sodium bis (2-ethyl-1-hexyl) sulfosuccinate (AOT)/isooctane/water microemulsions has been studied at 328 K. Enhancement of reaction rate has been found which depends on H 2 O/AOT mole ratio ω with a maximum at ω = 10.7. The effect of AOT concentration on reaction rate has been studied. The pseudo-first order rate constant decreases with [AOT] at constant ω = 12.3. Activation parameters have been obtained from the temperature dependence of the rate constant in the microemulsion. The results are discussed in terms of the chemical properties of the water molecules encased in the microemulsion droplets.
A.k. Chakraburtty - One of the best experts on this subject based on the ideXlab platform.
-
spectrophotometric determination of vanadium in glass and ceramics after extraction of the vanadium Salicylhydroxamic Acid complex on polyurethane foam
Analytica Chimica Acta, 1992Co-Authors: Swagata Bhattacharya, S.k. Roy, A.k. ChakraburttyAbstract:Abstract A simple spectrophotomeric method was developed for the determination of traces of vanadium present in glass and ceramic raw materials. The method involves the formation of a vanadium-Salicylhydroxamic Acid complex in 1 M HF-H 2 SO 4 medium, followed by extraction of polyether-based polyurethane foam and elution of the complex with Acidified acetone (9.5 ml of acetone + 0.5 ml of 1 M HCl) for spectrophotomeric measurement at 520 nm. The method obeys Beer's law from 0.5 to μg V ml −1 . The molar absorptivity was calculated to be 6.9 x 10 3 mol 1 −1 cm −1 at 520 nm. Interferences from other metals, viz., Fe, Co, Mo, Zr, Hf and Ti, were eliminated by using HF medium. The method was applied to several glass and ceramic samples.
-
Spectrophotometric determination of vanadium in glass and ceramics after extraction of the vanadium—Salicylhydroxamic Acid complex on polyurethane foam
Analytica Chimica Acta, 1992Co-Authors: Swagata Bhattacharya, S.k. Roy, A.k. ChakraburttyAbstract:Abstract A simple spectrophotomeric method was developed for the determination of traces of vanadium present in glass and ceramic raw materials. The method involves the formation of a vanadium-Salicylhydroxamic Acid complex in 1 M HF-H 2 SO 4 medium, followed by extraction of polyether-based polyurethane foam and elution of the complex with Acidified acetone (9.5 ml of acetone + 0.5 ml of 1 M HCl) for spectrophotomeric measurement at 520 nm. The method obeys Beer's law from 0.5 to μg V ml −1 . The molar absorptivity was calculated to be 6.9 x 10 3 mol 1 −1 cm −1 at 520 nm. Interferences from other metals, viz., Fe, Co, Mo, Zr, Hf and Ti, were eliminated by using HF medium. The method was applied to several glass and ceramic samples.
Swagata Bhattacharya - One of the best experts on this subject based on the ideXlab platform.
-
spectrophotometric determination of vanadium in glass and ceramics after extraction of the vanadium Salicylhydroxamic Acid complex on polyurethane foam
Analytica Chimica Acta, 1992Co-Authors: Swagata Bhattacharya, S.k. Roy, A.k. ChakraburttyAbstract:Abstract A simple spectrophotomeric method was developed for the determination of traces of vanadium present in glass and ceramic raw materials. The method involves the formation of a vanadium-Salicylhydroxamic Acid complex in 1 M HF-H 2 SO 4 medium, followed by extraction of polyether-based polyurethane foam and elution of the complex with Acidified acetone (9.5 ml of acetone + 0.5 ml of 1 M HCl) for spectrophotomeric measurement at 520 nm. The method obeys Beer's law from 0.5 to μg V ml −1 . The molar absorptivity was calculated to be 6.9 x 10 3 mol 1 −1 cm −1 at 520 nm. Interferences from other metals, viz., Fe, Co, Mo, Zr, Hf and Ti, were eliminated by using HF medium. The method was applied to several glass and ceramic samples.
-
Spectrophotometric determination of vanadium in glass and ceramics after extraction of the vanadium—Salicylhydroxamic Acid complex on polyurethane foam
Analytica Chimica Acta, 1992Co-Authors: Swagata Bhattacharya, S.k. Roy, A.k. ChakraburttyAbstract:Abstract A simple spectrophotomeric method was developed for the determination of traces of vanadium present in glass and ceramic raw materials. The method involves the formation of a vanadium-Salicylhydroxamic Acid complex in 1 M HF-H 2 SO 4 medium, followed by extraction of polyether-based polyurethane foam and elution of the complex with Acidified acetone (9.5 ml of acetone + 0.5 ml of 1 M HCl) for spectrophotomeric measurement at 520 nm. The method obeys Beer's law from 0.5 to μg V ml −1 . The molar absorptivity was calculated to be 6.9 x 10 3 mol 1 −1 cm −1 at 520 nm. Interferences from other metals, viz., Fe, Co, Mo, Zr, Hf and Ti, were eliminated by using HF medium. The method was applied to several glass and ceramic samples.
S.k. Roy - One of the best experts on this subject based on the ideXlab platform.
-
spectrophotometric determination of vanadium in glass and ceramics after extraction of the vanadium Salicylhydroxamic Acid complex on polyurethane foam
Analytica Chimica Acta, 1992Co-Authors: Swagata Bhattacharya, S.k. Roy, A.k. ChakraburttyAbstract:Abstract A simple spectrophotomeric method was developed for the determination of traces of vanadium present in glass and ceramic raw materials. The method involves the formation of a vanadium-Salicylhydroxamic Acid complex in 1 M HF-H 2 SO 4 medium, followed by extraction of polyether-based polyurethane foam and elution of the complex with Acidified acetone (9.5 ml of acetone + 0.5 ml of 1 M HCl) for spectrophotomeric measurement at 520 nm. The method obeys Beer's law from 0.5 to μg V ml −1 . The molar absorptivity was calculated to be 6.9 x 10 3 mol 1 −1 cm −1 at 520 nm. Interferences from other metals, viz., Fe, Co, Mo, Zr, Hf and Ti, were eliminated by using HF medium. The method was applied to several glass and ceramic samples.
-
Spectrophotometric determination of vanadium in glass and ceramics after extraction of the vanadium—Salicylhydroxamic Acid complex on polyurethane foam
Analytica Chimica Acta, 1992Co-Authors: Swagata Bhattacharya, S.k. Roy, A.k. ChakraburttyAbstract:Abstract A simple spectrophotomeric method was developed for the determination of traces of vanadium present in glass and ceramic raw materials. The method involves the formation of a vanadium-Salicylhydroxamic Acid complex in 1 M HF-H 2 SO 4 medium, followed by extraction of polyether-based polyurethane foam and elution of the complex with Acidified acetone (9.5 ml of acetone + 0.5 ml of 1 M HCl) for spectrophotomeric measurement at 520 nm. The method obeys Beer's law from 0.5 to μg V ml −1 . The molar absorptivity was calculated to be 6.9 x 10 3 mol 1 −1 cm −1 at 520 nm. Interferences from other metals, viz., Fe, Co, Mo, Zr, Hf and Ti, were eliminated by using HF medium. The method was applied to several glass and ceramic samples.
