Methylene Blue-Grafted Polyurethane Foam Using as a Chelating Resin for Preconcentration and Separation of Cadmium(II), Mercury(II), and Silver(I) from Waste Water
作者： E. A. Moawed , M. A. A. Zaid , M. F. El-Shahat
DOI: 10.1081/AL-120017699
关键词:
摘要: Abstract Methylene blue (Me. B), 3,7-Bisdimethylamino-phenothiazine-5-chloride, is called basic dye, one of the dyestuff that has found considerable application in extraction anions and anionic complexes. The synthesis methylene grafted foam performed by coupling between polyether (polyols), toluene diisocyanate (TDI). Ion association complexes are formed Me. B-grafted cadmium(II), silver(I), mercury(II) thiocyanate Me.B-grafted used for preconcentration Cd(II), Hg(II), Ag(I) from waste water. Various conditions (pH, shaking time, maximum capacities, chromatographic behavior) studied. Cd(II) separated at pH 1–4, while Hg(II) 1–2. Generally equilibrium obtained within a period 15 to 20 min.
sci-hub.se 参考文章(15)
Tibor Braun, James D. Navratil, A. B. Farag, Polyurethane foam sorbents in separation science ,(1985)
A.B. Farag, M.S. El-Shahawi, Removal of organic pollutants from aqueous solution. V. Comparative study of the extraction, recovery and chromatographic separation of some organic insecticides using unloaded polyurethane foam columns. Journal of Chromatography A. ,vol. 552, pp. 371- 379 ,(1991) , 10.1016/S0021-9673(01)95954-0
Zygmunt Marczenko, Separation and spectrophotometric determination of elements ,(1986)
M.S. El-Shahawi, Retention profiles of some commercial pesticides, pyrethroid and acaricide residues and their application to tomato and parsley plants. Journal of Chromatography A. ,vol. 760, pp. 179- 192 ,(1997) , 10.1016/S0021-9673(96)00872-2
Valfredo A Lemos, Ricardo E Santelli, Marcelo S de Carvalho, Sérgio L.C Ferreira, Application of polyurethane foam loaded with BTAC in an on-line preconcentration system: cadmium determination by FAAS Spectrochimica Acta Part B: Atomic Spectroscopy. ,vol. 55, pp. 1497- 1502 ,(2000) , 10.1016/S0584-8547(00)00257-3
P Padmaja, N Balasubramanian, TV Ramakrishna, Chemical enhancement method for the determination of mercury by spectrophotometry after iodide extraction. Talanta. ,vol. 41, pp. 255- 260 ,(1994) , 10.1016/0039-9140(94)80117-7
P. Chattopadhyay, C. Sinha, D. K. Pal, Preparation and properties of a new chelating resin containing imidazolyl azo groups Fresenius Journal of Analytical Chemistry. ,vol. 357, pp. 368- 372 ,(1997) , 10.1007/S002160050171
A.G. Hamza, A.B. Farag, A. Al-Herthani, Detection and semiquantitative determination of cadmium and copper using polyurethane foam loaded with selective reagents Microchemical Journal. ,vol. 32, pp. 13- 17 ,(1985) , 10.1016/0026-265X(85)90046-3
M. Tanigawa, T. Honjo, K. Terada, Preconcentration and determination of trace amounts of cadmium in water as its 1-(2-pyridylazo)-2-naphthol chelate by means of extraction spectrophotometry Fresenius Journal of Analytical Chemistry. ,vol. 338, pp. 919- 919 ,(1990) , 10.1007/BF00322035
Ricardo Jorgensen Cassella, Ricardo E. Santelli, Salvador Garrigues, Miguel de la Guardia, Retention of carbaryl by polyether type polyurethane foam: a critical study Analyst. ,vol. 125, pp. 257- 261 ,(2000) , 10.1039/A908608K