The extraction behavior of platinum(Ⅳ) was studied with N-n-octylaniline as a function of different parameters,such as pH,concentrations of weak acids,mineral acids,reagents and elution time. A selective method was developed for the extraction chromatographic studies of platinum(Ⅳ) and its separation from several metal ions with N-n-octylaniline (liquid anion exchanger) as a stationary phase on silica gel. The quantitative extraction of platinum(Ⅳ) was observed with 0.067 mol/L N-n-octylaniline and 0.015 mol/L ascorbic acid at pH 1.0. Metal ion was stripped from the column with water and determined spectrophotometrically with stannous chloride method. The proposed method is free from the interference of a large number of cations and anions. Platinum(Ⅳ) was separated from pharmaceutical preparations,alloys and synthetic mixtures. Mutual separation scheme was developed for platinum(Ⅳ),palladium(Ⅱ) and gold(Ⅲ). The log-log plot of N-n-octylaniline concentration versus the distribution ratio indicates that the probable extracted species is [RR~′NH~+_2 ] · Pt(C_6H_7O_6)~-_3.
参考文献
| [1] | Platinum.[2008-02-26].http:/ /en.wikipedia.org/wiki/Platinum |
| [2] | Mhaske A A,Dhadke P M.Hydrometallurgy,2001,61:143 |
| [3] | Kwang S C,Chang H L,Yeong J P,et al.Bull Korean Chem Soc,2001,22(8):801 |
| [4] | Sunder Raju P V,Merkle R K W,Graser P,et al.Current Science,2007,93(6):851 |
| [5] | Rane M V,Venugopal V.Hydrometallurgy,2006,84(1/2):54 |
| [6] | Preston J S,du Preez A C.Solvent Extr Ion Exch,2002,20(3):359 |
| [7] | Godlewska-Zylkiewicz B,Lesniewska B.J Trace Microprobe Tech,2001,19:345 |
| [8] | Saitoh T,Suzuki S,Hiraide M.J Chromatogr A,2005,1 097(1/2):179 |
| [9] | Pyrzynska K.Talanta,1998,47:841 |
| [10] | Elci L,Soylak M,Buyuksekerci E B.Anal Sci,2003,19:1 621 |
| [11] | Kumar S,Verma R,Venkataramani B.Solvent Extr Ion Exch,1995,13(6):1 097 |
| [12] | Kuchekar S R,Chavan M B.Talanta,1988,35(5):357 |
| [13] | Kuchekar S R,Aher H R,Chavan M B.Indian J Chem:Sect A,2003,42:1 674 |
| [14] | Aher H R,Gunjal P S,Kuchekar S P.Asian J Chem,1998,10:43 |
| [15] | Aher H R,Kuchekar S R.Indian J Chem Technol,2008,15:403 |
| [16] | Aher H R,Kuchekar S R.Asian J Chem,2004,16(2):695 |
| [17] | Aher H R,Kuchekar S R.Int J Chem Sci,2006,4(1):157 |
| [18] | Aher H R,Phule S R,Uphade B K.Chem Environ Res,2006,15(1/2):161 |
| [19] | Furman N H,Krieger R E.Standard methods of chemical analysis.6th ed.Huntington,New York:R E Krieger Pub Co,1975 |
| [20] | Kuchekar S R.[PhD Thesis].Kolhapur:Shivaji University,1986 |
| [21] | Sandell E B.Colorimetric determination of traces of metals.Vol 3.3rd ed.New York:Interscience Publishers,Inc,1965:503,726 |
| [22] | Hindmarsh K,House Donald A,van Eldik R.Inorg Chim Acta,1998,278(1):32 |
| [23] | Lokhande T N,Anuse M A,Chavan M B.J Saudi Chem Soc,2000,4(1):1 |
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