In present study nanowires of iron were fabricated by both alternate current (a.c) and direct current (d.c) by using nanoporous anodized aluminium as a template. Nanowires in anodic alumina template were fabricated by electrodeposition method. It has been investigated that synthesis of nanowires is possible by using both a.c and d.c electrodeposition. The nanowires obtained by using a.c electrodeposition were elongated and more stable where as nanowires fabricated by using d.c electrodeposition were less stable. Optimum time attained for the synthesis of nanowires in a.c depostion was 5 minutes where as in case of d.c deposition nanocrystals of different shapes were obtained due to less stability. Average diameter of nanopores obtained in anodized aluminium was 150 nm by using phosphoric acid as a electrolyte. Length of nanowires obtained by using a.c and d.c electrodeposition was 683 nm and 640 nm respectively.
{"title":"Comaprison of Iron Nanowires Fabricated via Porous Anodic Aluminium Oxide Template by a.c and d.c. Electrodeposition","authors":"Prabhjot Kaur, Sangeeta Sharma, M. Kushwaha","doi":"10.9790/5736-1007011820","DOIUrl":"https://doi.org/10.9790/5736-1007011820","url":null,"abstract":"In present study nanowires of iron were fabricated by both alternate current (a.c) and direct current (d.c) by using nanoporous anodized aluminium as a template. Nanowires in anodic alumina template were fabricated by electrodeposition method. It has been investigated that synthesis of nanowires is possible by using both a.c and d.c electrodeposition. The nanowires obtained by using a.c electrodeposition were elongated and more stable where as nanowires fabricated by using d.c electrodeposition were less stable. Optimum time attained for the synthesis of nanowires in a.c depostion was 5 minutes where as in case of d.c deposition nanocrystals of different shapes were obtained due to less stability. Average diameter of nanopores obtained in anodized aluminium was 150 nm by using phosphoric acid as a electrolyte. Length of nanowires obtained by using a.c and d.c electrodeposition was 683 nm and 640 nm respectively.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76322784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
DFT implemented in ADF.2012.01 was applied to study the structures of three macrocyclic paramagnetic hexa coordinate complexes: [L3M] 2+ {M=V(II), Ni(II)}, and [L3Cr] 3+ (L=2,2 -bipyridine) by four spectral techniques. After their pre-optimization, the software was run by using Single Point, LDA, Default, Relativity, Spin Orbit, ZORA, Unrestricted, None, Collinear, Nosym using TZP or TZ2P Basis sets in ESR/EPR/EFG/ZFS Program to obtain ESR parameters: g11, g22, g33, giso, a11, a22, a33, Aten. More ESR parameters (gn. Aten, ZFS) and NQR parameters {, q11, q22, q33, NQCC} were obtained by replacing Spin Orbit by scalar command in a new ADF Input. The software was, then, run using the “NMR Program” with Single Point, Default, None, Collinear, Nosym using the same Basis sets leaving unrestricted command blank to obtain Shielding Constants (σM, σ 13 C, σ 17 O), Chemical Shifts (δM, δ 13 C, δ 17 O), two diamagnetic, four paramagnetic and four spin orbit contributing terms in σ values of the constituents. The software was also run to obtain IR frequencies of normal modes of the (3n-6) fundamental vibration bands of the complexes. Five parameters: σ, δ, g.Aten, , NQCC of 14 N; four parameters: σ, δ, g.Aten, of 13 C and three parameters: σ, δ, g.Aten, of 1 H corroborated to infer that the 30 Carbons were of 5 different types, the 24 Hydrogens were of 4 different types but the 6 Nitrogens were of the same type spatially in the three studied complexes. This study was important because we could confirm MLCT phenomenon by NMR; calculated four more NMR, ESR and NQR parameters: H^, Ehf, Asymmetric coefficient (), Laplace equation; classified the 177 bands into their vibration symmetries and IR activities and calculated some thermal parameters of the complexes.
{"title":"NMR, ESR, NQR and IR Studies of Paramagnetic Macrocyclic Complexes of 1st Transition Series Metal Ions Exhibiting MLCT Phenomenon: A DFT Application. Part: III. Tris (2, 2- bipyridine) Complexes","authors":"M. Sehgal, A. Aggarwal, Sunaina Singh","doi":"10.9790/5736-1006027884","DOIUrl":"https://doi.org/10.9790/5736-1006027884","url":null,"abstract":"DFT implemented in ADF.2012.01 was applied to study the structures of three macrocyclic paramagnetic hexa coordinate complexes: [L3M] 2+ {M=V(II), Ni(II)}, and [L3Cr] 3+ (L=2,2 -bipyridine) by four spectral techniques. After their pre-optimization, the software was run by using Single Point, LDA, Default, Relativity, Spin Orbit, ZORA, Unrestricted, None, Collinear, Nosym using TZP or TZ2P Basis sets in ESR/EPR/EFG/ZFS Program to obtain ESR parameters: g11, g22, g33, giso, a11, a22, a33, Aten. More ESR parameters (gn. Aten, ZFS) and NQR parameters {, q11, q22, q33, NQCC} were obtained by replacing Spin Orbit by scalar command in a new ADF Input. The software was, then, run using the “NMR Program” with Single Point, Default, None, Collinear, Nosym using the same Basis sets leaving unrestricted command blank to obtain Shielding Constants (σM, σ 13 C, σ 17 O), Chemical Shifts (δM, δ 13 C, δ 17 O), two diamagnetic, four paramagnetic and four spin orbit contributing terms in σ values of the constituents. The software was also run to obtain IR frequencies of normal modes of the (3n-6) fundamental vibration bands of the complexes. Five parameters: σ, δ, g.Aten, , NQCC of 14 N; four parameters: σ, δ, g.Aten, of 13 C and three parameters: σ, δ, g.Aten, of 1 H corroborated to infer that the 30 Carbons were of 5 different types, the 24 Hydrogens were of 4 different types but the 6 Nitrogens were of the same type spatially in the three studied complexes. This study was important because we could confirm MLCT phenomenon by NMR; calculated four more NMR, ESR and NQR parameters: H^, Ehf, Asymmetric coefficient (), Laplace equation; classified the 177 bands into their vibration symmetries and IR activities and calculated some thermal parameters of the complexes.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84608472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper simple and convenient visual titrimetric method have been described for the determination of Cyproheptadine hydrochloride (CPH) i.e. an antihistamine drug in pure form and in its dosage forms with pyridinium fluoro chromate (PFC) reagent. The principle of this method involves the oxidation of Cyclohepten ring of the Cyproheptadine hydrochloride (CPH) by a known excess of potassium iodate in sulphuric acid medium followed by iodometric titration in presence of reagent pyridinium fluoro chromate (PFC). The reagent pyridinium fluoro chromate (PFC) used in this method is a versatile oxidizing agent of chromium (VI). The value of percentage error, coefficient of variation (CV) and standard deviation (SD) have been calculated for accuracy and precision of result.
{"title":"Determination of Cyproheptadine Hydrochloride Drugs in Pure Form and In Their Pharmaceutical Preparation with Pyridinium Fluorochromate (PFC) Reagent","authors":"A. Pandey, D. Dwivedi","doi":"10.9790/5736-1007020104","DOIUrl":"https://doi.org/10.9790/5736-1007020104","url":null,"abstract":"In this paper simple and convenient visual titrimetric method have been described for the determination of Cyproheptadine hydrochloride (CPH) i.e. an antihistamine drug in pure form and in its dosage forms with pyridinium fluoro chromate (PFC) reagent. The principle of this method involves the oxidation of Cyclohepten ring of the Cyproheptadine hydrochloride (CPH) by a known excess of potassium iodate in sulphuric acid medium followed by iodometric titration in presence of reagent pyridinium fluoro chromate (PFC). The reagent pyridinium fluoro chromate (PFC) used in this method is a versatile oxidizing agent of chromium (VI). The value of percentage error, coefficient of variation (CV) and standard deviation (SD) have been calculated for accuracy and precision of result.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87223508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the present work, the stable silver nanoparticles were synthesized by the bioreduction method. Aqueous leaf extracts of the Plumeria plant was used as reducing and as capping agent. The color change in reaction mixture from bright green to dark brown color was observed which indication of the reduction of Silver ions into Silver nanoparticles. The formation of silver nanoparticles (AgNPs) was characterized by UV-vis spectroscopy, FT-IR, SEM and XRD studies. The synthesized AgNPs exhibited good Antibacterial potential against gram positive and gram negative bacteria.
{"title":"“Characterization and Green Synthesis of Silver Nanoparticles from Plumeria Leaves Extracts: Study of Their Antibacterial Activity”.","authors":"Vinay. S.P","doi":"10.9790/5736-1007015763","DOIUrl":"https://doi.org/10.9790/5736-1007015763","url":null,"abstract":"In the present work, the stable silver nanoparticles were synthesized by the bioreduction method. Aqueous leaf extracts of the Plumeria plant was used as reducing and as capping agent. The color change in reaction mixture from bright green to dark brown color was observed which indication of the reduction of Silver ions into Silver nanoparticles. The formation of silver nanoparticles (AgNPs) was characterized by UV-vis spectroscopy, FT-IR, SEM and XRD studies. The synthesized AgNPs exhibited good Antibacterial potential against gram positive and gram negative bacteria.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91017719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ramesh, B. Lavakusa, B. Mohan, Y. P. Kumar, D. Devi, K. Basavaiah
A facile and eco-friendly method for the synthesis of magnetite nanoparticles (Fe3O4 NPs) via CoPrecipitation in the presence of aqueous leaf extract of Ficus hispida L. The optical, crystalline, structural morphology and magnetic behaviour of the synthesized Fe3O4 NPs were characterized by Ultraviolet-Visible (UV-Vis), Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The absorption spectrum reveals the peak at 379 nm, which confirm the formations of Fe3O4 NPs. XRD results reveals the formation of phase pure Fe3O4 NPs with cubic inverse spinel structure with crystallite sizes of 11.04 nm. The FESEM and TEM images clearly show that the spherical shape of Fe3O4 NPs with average particles size of 10.96 nm. Bright circular rings in the selected area electron diffraction (SAED) pattern showed good crystallinity. VSM results show super paramagnetic behaviour of Fe3O4 NPs. The synthesized Fe3O4 NPs have potential to adsorption of Methylene Blue(MB)
{"title":"A Facile Plant Mediated Synthesis of Magnetite Nanoparticles Using Aqueous Leaf Extract of Ficus Hispida L. for Adsorption of Organic Dye","authors":"A. Ramesh, B. Lavakusa, B. Mohan, Y. P. Kumar, D. Devi, K. Basavaiah","doi":"10.9790/5736-1007013543","DOIUrl":"https://doi.org/10.9790/5736-1007013543","url":null,"abstract":"A facile and eco-friendly method for the synthesis of magnetite nanoparticles (Fe3O4 NPs) via CoPrecipitation in the presence of aqueous leaf extract of Ficus hispida L. The optical, crystalline, structural morphology and magnetic behaviour of the synthesized Fe3O4 NPs were characterized by Ultraviolet-Visible (UV-Vis), Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The absorption spectrum reveals the peak at 379 nm, which confirm the formations of Fe3O4 NPs. XRD results reveals the formation of phase pure Fe3O4 NPs with cubic inverse spinel structure with crystallite sizes of 11.04 nm. The FESEM and TEM images clearly show that the spherical shape of Fe3O4 NPs with average particles size of 10.96 nm. Bright circular rings in the selected area electron diffraction (SAED) pattern showed good crystallinity. VSM results show super paramagnetic behaviour of Fe3O4 NPs. The synthesized Fe3O4 NPs have potential to adsorption of Methylene Blue(MB)","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81330341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daben, J. M, Dashak, D. A, Daben, M.R, Jock, A.A, Onaji, J.O
The proximate composition and antibacterial activity of Crinum zeylanicum bulb was evaluated with the aim of understanding the rationale usage by herbal traditional practitioners on trouble skin and bone setting/healing. Aqueous, ethanol and n-hexane extracts were tested on Staphylococcus aureus, Streptococcus pneumoniae, Bacillus cereus, Escherichia coli, Salmonella typhi and Shigella dysenteriae using the agar well diffusion technique and zones of inhibition in diameter. The proximate parameters analyzed revealed the presence of moisture (39.58%±1.16), ash (6.26%±2.13), crude fiber (26.55%±0.68) crude fat (5.00%±0.00), total carbohydrate (43.95% ±2.15) , nitrogen (0.51%±0.06), crude protein (3.19%±0.01) and reducing sugar (0.49), The antibacterial screening results revealed that the aqueous extract showed marked inhibitory effect on the test organisms than other extracts at significant difference of ≤ 0.01 and more pronounce on S.pneumoniae while S. aureus was found to be the most sensitive toward antibacterial activity of ethanol extract and then the n-hexane extract showed no activity on the test organisms except for S. pneumoniae at (400-50mg/cm 3 ) concentrations and at 400mg/cm 3 for S. aureus. The MIC and MBC for the three extracts also concurred that water extract have higher potential of preventing the activity of the bacteria than the ethanol and n-hexane extracts. These results indicate that the bulb of C zeylanicum contained essential nutrients and antibacterial effects suitable for health benefit as it explained the medicinal action of the plant encountered in its therapeutic uses
{"title":"An Assessment of the Proximate Composition and Antibacterial Activity of Crinum Zeylanicum Bulb Extracts Used in the Treatment of Bone Setting and Healing","authors":"Daben, J. M, Dashak, D. A, Daben, M.R, Jock, A.A, Onaji, J.O","doi":"10.9790/5736-1006025560","DOIUrl":"https://doi.org/10.9790/5736-1006025560","url":null,"abstract":"The proximate composition and antibacterial activity of Crinum zeylanicum bulb was evaluated with the aim of understanding the rationale usage by herbal traditional practitioners on trouble skin and bone setting/healing. Aqueous, ethanol and n-hexane extracts were tested on Staphylococcus aureus, Streptococcus pneumoniae, Bacillus cereus, Escherichia coli, Salmonella typhi and Shigella dysenteriae using the agar well diffusion technique and zones of inhibition in diameter. The proximate parameters analyzed revealed the presence of moisture (39.58%±1.16), ash (6.26%±2.13), crude fiber (26.55%±0.68) crude fat (5.00%±0.00), total carbohydrate (43.95% ±2.15) , nitrogen (0.51%±0.06), crude protein (3.19%±0.01) and reducing sugar (0.49), The antibacterial screening results revealed that the aqueous extract showed marked inhibitory effect on the test organisms than other extracts at significant difference of ≤ 0.01 and more pronounce on S.pneumoniae while S. aureus was found to be the most sensitive toward antibacterial activity of ethanol extract and then the n-hexane extract showed no activity on the test organisms except for S. pneumoniae at (400-50mg/cm 3 ) concentrations and at 400mg/cm 3 for S. aureus. The MIC and MBC for the three extracts also concurred that water extract have higher potential of preventing the activity of the bacteria than the ethanol and n-hexane extracts. These results indicate that the bulb of C zeylanicum contained essential nutrients and antibacterial effects suitable for health benefit as it explained the medicinal action of the plant encountered in its therapeutic uses","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90206978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bismuth (III) thiolates/dithiolates have been synthesized by electrochemical reactions of ethanethiol, 2-propanethiol, 2-methylpropane-2-thiol, Butanethiol, 1-pentanethiol, , Ethane1, 2-dithiol and Butane-1, 4dithiol at sacrificial bismuth anode and inert platinum cathode using tetrabutylammonium chloride as supporting electrolyte. The coordination compounds of these thiolates/dithiolates with 1, 10-phenanthroline and 2, 2'-bipyridyl have also been synthesized electrochemically. The solid products that separated in the anode compartment have been isolated and characterized by elemental analysis and infrared spectral studies. Current efficiencies of these reactions are quite high.
{"title":"Direct Electrochemical Synthesis of Bismuth (III) Thiolates/Dithiolates and Their Coordination Compounds","authors":"H. Kaur, Baljit Singh","doi":"10.9790/5736-1006023235","DOIUrl":"https://doi.org/10.9790/5736-1006023235","url":null,"abstract":"Bismuth (III) thiolates/dithiolates have been synthesized by electrochemical reactions of ethanethiol, 2-propanethiol, 2-methylpropane-2-thiol, Butanethiol, 1-pentanethiol, , Ethane1, 2-dithiol and Butane-1, 4dithiol at sacrificial bismuth anode and inert platinum cathode using tetrabutylammonium chloride as supporting electrolyte. The coordination compounds of these thiolates/dithiolates with 1, 10-phenanthroline and 2, 2'-bipyridyl have also been synthesized electrochemically. The solid products that separated in the anode compartment have been isolated and characterized by elemental analysis and infrared spectral studies. Current efficiencies of these reactions are quite high.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88869230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Raghavendra, A. Venkatesulu, K. S. Rao, P. Venkateswarao
Densities (ρ), speeds of sound (u), and viscosities (η) are reported for binary mixtures of N,N-diethyl aniline with 1-alkanols (1-hexanol, 1-heptanol and 1-octanol) over the entire composition range of mole fraction at T = (303.15 318.15) K and at atmospheric pressure 0.1 MPa. The excess properties such as excess molar volume, excess isentropic compressibility and deviations in viscosity are calculated from the density, speed of sound and viscosity. Excess properties are correlated using the Redlich – Kister equation. The excess partial molar volumes and excess partial molar isentropic compressibilities are calculated for all the binary systems throughout the composition range and also at infinity dilutions. The results are analyzed in terms of ruptureofhydrogenbonded chainofthedipolar interaction betweensoluteand1alkanolexceedstheintermolecular interactionthroughdipole-dipoleandhydrogenbonding betweenN, N-diethyl anilineand1-alkanolmolecules.The V E results are analyzed in the light of Prigogine-Flory-Patterson theory. Analysis of each of the three contributions viz. interactional, free volume and P* to V E has shown that interactional contribution are positive for all systems, both the free volume effect and P* contribution are negative for all the mixtures.
{"title":"Electron Releasing Effect on the Thermodynamic and Transport Properties of Liquid Mixtures at Various Temperatures","authors":"M. Raghavendra, A. Venkatesulu, K. S. Rao, P. Venkateswarao","doi":"10.9790/5736-1007021227","DOIUrl":"https://doi.org/10.9790/5736-1007021227","url":null,"abstract":"Densities (ρ), speeds of sound (u), and viscosities (η) are reported for binary mixtures of N,N-diethyl aniline with 1-alkanols (1-hexanol, 1-heptanol and 1-octanol) over the entire composition range of mole fraction at T = (303.15 318.15) K and at atmospheric pressure 0.1 MPa. The excess properties such as excess molar volume, excess isentropic compressibility and deviations in viscosity are calculated from the density, speed of sound and viscosity. Excess properties are correlated using the Redlich – Kister equation. The excess partial molar volumes and excess partial molar isentropic compressibilities are calculated for all the binary systems throughout the composition range and also at infinity dilutions. The results are analyzed in terms of ruptureofhydrogenbonded chainofthedipolar interaction betweensoluteand1alkanolexceedstheintermolecular interactionthroughdipole-dipoleandhydrogenbonding betweenN, N-diethyl anilineand1-alkanolmolecules.The V E results are analyzed in the light of Prigogine-Flory-Patterson theory. Analysis of each of the three contributions viz. interactional, free volume and P* to V E has shown that interactional contribution are positive for all systems, both the free volume effect and P* contribution are negative for all the mixtures.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91519043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An on-line preconcentration procedure for the determination of heavy metal ions using Flowinjection approach with flame atomic absorption spectroscopy is developed significantly in recent years. This review focuses on chelating resins based on Amberlite XAD resins which have been used in Flow Injection analysis since 1996.The factors like detection limit, enrichment factor and sample throughput are reported. Chelates immobilized on Amberlite XAD matrices and the metal ions separated and determined together with references are given in the review.
{"title":"Applications of Amberlite XAD based Chelating resins in Online Pre concentration of metal ions","authors":"P. L. Meena, R. Saxena","doi":"10.9790/5736-1006024454","DOIUrl":"https://doi.org/10.9790/5736-1006024454","url":null,"abstract":"An on-line preconcentration procedure for the determination of heavy metal ions using Flowinjection approach with flame atomic absorption spectroscopy is developed significantly in recent years. This review focuses on chelating resins based on Amberlite XAD resins which have been used in Flow Injection analysis since 1996.The factors like detection limit, enrichment factor and sample throughput are reported. Chelates immobilized on Amberlite XAD matrices and the metal ions separated and determined together with references are given in the review.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77017993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. S.V, A. VishnumurthyK., H. Naik, T. Manjuraj, D. JayannaN
The series of Co (II), Ni (II) and Cu(II) metal complexes quinolin-8-yl (1,3-benzoxazol-2ylsulfanyl)acetate (BZ) have been synthesized. All the complexes thoroughly characterized by different physicochemical and spectroscopic techniques (UV-Vis, IR, NMR and ESI-Mass). The powder XRD indicates the crystalline state and morphology of Ni (II) and Cu (II) metal complexes, the thermal stability of the metal complexes as been performed. In the current study, the synthesized compounds were evaluated for their antioxidant activity by using DPPH assay, Cu (II) metal complex exhibited higher antioxidant activity almost close to the standard BHT. In addition, antioxidant activity is correlated with docking interactions of human antioxidant enzyme receptor with the competitive inhibitor DTT (PDB: 3MNG), which showed greater binding interactions with metal complexes. The antimicrobial studies has been carried out against different bacterial and fungal strains and the results showed that metal complexes be more active than the ligand BZ. Keywords; Benzoxazole, metal complex, XRD, Antioxidant, molecular docking.
合成了一系列Co (II)、Ni (II)和Cu(II)金属配合物-喹啉-8-基(1,3-苯并恶唑-2基磺胺基)乙酸酯(BZ)。所有配合物都通过不同的物理化学和光谱技术(UV-Vis, IR, NMR和ESI-Mass)进行了彻底的表征。粉末XRD表征了Ni (II)和Cu (II)金属配合物的结晶状态和形貌，并对金属配合物的热稳定性进行了研究。本研究采用DPPH法对所合成化合物的抗氧化活性进行了评价，Cu (II)金属配合物的抗氧化活性几乎接近标准BHT。此外，抗氧化活性与人抗氧化酶受体与竞争抑制剂DTT (PDB: 3MNG)的对接相互作用有关，后者与金属配合物的结合相互作用更大。对不同的细菌和真菌菌株进行了抗菌研究，结果表明金属配合物比配体BZ更有活性。关键字;苯并恶唑，金属配合物，XRD，抗氧化剂，分子对接。
{"title":"Metal Complexes of quinolin-8-yl (1, 3-benzoxazol-2-ylsulfanyl) acetate: Spectral, XRD, thermal, molecular docking and biological evaluation","authors":"N. S.V, A. VishnumurthyK., H. Naik, T. Manjuraj, D. JayannaN","doi":"10.9790/5736-1006023643","DOIUrl":"https://doi.org/10.9790/5736-1006023643","url":null,"abstract":"The series of Co (II), Ni (II) and Cu(II) metal complexes quinolin-8-yl (1,3-benzoxazol-2ylsulfanyl)acetate (BZ) have been synthesized. All the complexes thoroughly characterized by different physicochemical and spectroscopic techniques (UV-Vis, IR, NMR and ESI-Mass). The powder XRD indicates the crystalline state and morphology of Ni (II) and Cu (II) metal complexes, the thermal stability of the metal complexes as been performed. In the current study, the synthesized compounds were evaluated for their antioxidant activity by using DPPH assay, Cu (II) metal complex exhibited higher antioxidant activity almost close to the standard BHT. In addition, antioxidant activity is correlated with docking interactions of human antioxidant enzyme receptor with the competitive inhibitor DTT (PDB: 3MNG), which showed greater binding interactions with metal complexes. The antimicrobial studies has been carried out against different bacterial and fungal strains and the results showed that metal complexes be more active than the ligand BZ. Keywords; Benzoxazole, metal complex, XRD, Antioxidant, molecular docking.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76766869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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