A chelating resin containing 4-(2-thiazolylazo)resorcinol as the functional group. Chromatographic application to the preconcentration and separation of some trace metal ions including uranium

Lee, Chang Heon; Suh, Moo Yul; Joe, Kih Soo; Eom, Tae Yoon; Lee, Won

doi:10.1016/s0003-2670(97)00342-5

Cited by 38 publications

(14 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…TAR was used in ion-exchange liquid [12][13][14][15][16] and thin-layer [17] chromatography for the determination of metals ions in natural and drinking water as well as for electrophoretic determination of metals [18][19][20], in optical [21][22][23] and ionselective [24,25] sensors to determine the metals ions, for obtaining of the sorbents modified by azo reagent for concentration metals ions [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Development and validation of the simple and sensitive spectrophotometric method of sulphanilamides determination with 4-(2-thiazolylazo)-resorcinol in veterinary preparations

et al. 2015

View full text Add to dashboard Cite

Abstract:New simple, rapid, and accurate spectrophotometric techniques for sulphanilamides assay in combination drugs have been elaborated. The method is based on the formation of coloured products of sulphanilamides diazonium salt azoсoupling with heterocyclic azo reagent 4-(2-thiazolylazo)-resorcinol (TAR) in alkaline medium (pH 9.5) with the following measurement of their absorbance at λ max = 615 nm. Formed products are stable for 1 hour at room temperature. Effective molar absorptivities at absorbance maximum 615 nm for disazo dyes were ~ 10 4 M -1 cm -1 . Linear ranges for sulphanilamides determination were 0.5−30.0 µg mL -1 . The developed method was used for the suphanilamides determination in tablets, powder, solutions, suspensions and ointments.

show abstract

Section: Introductionmentioning

confidence: 99%

Development and validation of the simple and sensitive spectrophotometric method of sulphanilamides determination with 4-(2-thiazolylazo)-resorcinol in veterinary preparations

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Many organic and inorganic adsorbents, containing different functional groups, which show selectivity toward uranyl ions, have been synthesized and used for the separation of uranium. For example, neutral polymer–amberlite polystyrene divinylbenzene (amberlite XAD) series,6–8 silica,9 octadecyl silica membrane discs,10 activated silica gel,11 controlled‐pore glass,12 polyurethane foam,13 and cationic or anionic exchange resins14 have been reported to be used for both preconcentration of uranium (VI) from dilute solutions, before determination by a variety of analytical techniques and separation. Among these, functionalized polymeric materials in the form of resins, beads, gels, membranes, etc.…”

Section: Introductionmentioning

confidence: 99%

Study of uranium adsorption using amidoximated polyacrylonitrile‐encapsulated macroporous beads

Singh

Shah

Dwivedi

et al. 2012

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polyacrylonitrile beads, containing the amidoximated polyacrylonitrile, were prepared for adsorption of uranium. The synthesized amidoximated polyacrylonitrile chelating beads were evaluated, for their ability to adsorb uranium from aqueous solution, at different temperatures and pH values. The kinetic measurement showed that about 120 min of equilibration time was enough, to remove saturation amount of uranium from the solution. The pseudo first-order and pseudo second-order equations were used to analyze the kinetic data, and the rate constants were determined. The equilibrium adsorption data were examined by the Langmuir, Freundlich, and Temkin isotherms. The data showed a better fit to the Langmuir isotherm. The loaded uranium could also be leached out from the beads, by treating with dilute acids. The uranium uptake capacity of the polymeric beads was found to be 3.5 mg/g of the swollen beads. Reusability of the beads was also established by multiple adsorption-desorption experiments. The pore volume and the surface area of the dried beads, measured by BET method, were found to be 1.93 cc/g and 320 m 2 /g, respectively.

show abstract

“…3 Several methods for determination of uranium based on the preconcentration techniques have been reported. Solid sorbents such as neutral polymer-Amberlite XAD series, 4 silica, 5 activated silica gel, 6 polyurethane foam 7 and cationic and anionic exchange resins 8 have been reported for the enrichment of uranium(VI) from dilute solutions prior to determination by a variety of analytical techniques.…”

Section: Introductionmentioning

confidence: 99%

Solid Phase Extraction of Uranium by Naphthalene‐Methyltrioctylammonium Chloride and Arsenazo(III) Adsorbent and Subsequent Spectrophotometric Determination

Behpour¹,

Ghoreishi²,

Qamsari³

et al. 2010

Chin. J. Chem.

View full text Add to dashboard Cite

A simple and effective method has been presented for the preconcentration of uranium by solid phase extraction. For this purpose arsenazo(III) supported on naphthalene-methyltrioctylammonium chloride was used as an adsorbent and uranium solution at pH 3.5 with flow rate of 1 mL•min -1 was passed through the column. Therefore, uranium-arsenazo(III) complex was formed onto column. Uranium was quantitatively eluted with 5 mL of a 0.1% ammonium tetraphenylborate and determined by spectrophotometric method at 652 nm. Several parameters such as pH, amount of reagents, sample volume, etc. were investigated. The effect of diverse ions on the preconcentration has also been studied and the optimized conditions developed have been utilized for the trace determination of uranium. A preconcentration factor of 100 was achieved. The relative standard deviation (N＝8) was 0.5% for 3 ng• mL -1 of uranium. The three sigma detection limit (36) was 0.045 ng•mL -1 .

show abstract

A chelating resin containing 4-(2-thiazolylazo)resorcinol as the functional group. Chromatographic application to the preconcentration and separation of some trace metal ions including uranium

Cited by 38 publications

References 19 publications

Development and validation of the simple and sensitive spectrophotometric method of sulphanilamides determination with 4-(2-thiazolylazo)-resorcinol in veterinary preparations

Development and validation of the simple and sensitive spectrophotometric method of sulphanilamides determination with 4-(2-thiazolylazo)-resorcinol in veterinary preparations

Study of uranium adsorption using amidoximated polyacrylonitrile‐encapsulated macroporous beads

Solid Phase Extraction of Uranium by Naphthalene‐Methyltrioctylammonium Chloride and Arsenazo(III) Adsorbent and Subsequent Spectrophotometric Determination

Contact Info

Product

Resources

About