Soylak Mustafa, Tuzen Mustafa
Department of Chemistry, Faculty of Art and Science, Erciyes University, 38039 Kayseri, Turkey.
J Hazard Mater. 2006 Oct 11;137(3):1496-501. doi: 10.1016/j.jhazmat.2006.04.027. Epub 2006 Apr 25.
A solid phase extraction method was developed for the preconcentration and separation of trace amounts of chromium, manganese, iron, cobalt, copper, cadmium and lead from environmental samples by complexation with alpha-benzoin oxime followed by adsorption onto Diaion SP-850-solid phase extraction column. One molar per liter HNO(3) was used as eluent. The recoveries of analytes at pH 8.0 with 700 mg of resin were greater than 95% without interference from alkaline, earth alkaline and some metal ions. The detection limits by three sigma for analyte ions were 0.65 microg l(-1) for Cr(III), 0.42 microg l(-1) for Mn(II), 0.28 microg l(-1) for Fe(III), 0.73 microg l(-1) for Co(II), 0.30 microg l(-1) for Cu(II), 0.47 microg l(-1) for Cd(II) and 0.50 microg l(-1) for Pb(II). The validation of the procedure was performed by the analysis of the certified standard reference materials. The presented procedure was applied to the determination of analytes in tap, river and sea waters, rice, wheat, canned tomato and coal samples with successfully results (recoveries greater than 95%, R.S.D.'s lower than 8%).
建立了一种固相萃取方法，用于从环境样品中预富集和分离痕量的铬、锰、铁、钴、铜、镉和铅。该方法是先将这些元素与α-苯偶姻肟络合，然后吸附到Diaion SP - 850固相萃取柱上。用1摩尔/升的硝酸作为洗脱剂。在pH 8.0、使用700毫克树脂的条件下，分析物的回收率大于95%，不受碱金属、碱土金属和一些金属离子的干扰。分析物离子的三倍标准偏差检测限分别为：铬(III) 0.65微克/升、锰(II) 0.42微克/升、铁(III) 0.28微克/升、钴(II) 0.73微克/升、铜(II) 0.30微克/升、镉(II) 0.47微克/升、铅(II) 0.50微克/升。通过分析有证标准物质对该方法进行了验证。所提出的方法应用于自来水、河水、海水、大米、小麦、罐装番茄和煤样中分析物的测定，结果良好（回收率大于95%，相对标准偏差低于8%）。
