Ghaedi Mehrorang, Ahmadi Farshid, Soylak Mustafa
Chemistry Department, Yasouj University, Yasouj, Iran 75914-353.
Ann Chim. 2007 May-Jun;97(5-6):277-85. doi: 10.1002/adic.200790027.
A sensitive and simple method for the simultaneous preconcentration of nutritionally important minerals in real samples has been reported. The method is based on the adsorption of Cu2+, Ni2+, Co2+ and Pb2+ on 4-propyl-2-thiouracil (PUT) loaded on activated carbon. The metals on the complexes are eluted using 5 mL 3 M HNO3 in acetone. The influences of the analytical parameters including pH and sample volume were investigated. The effects of matrix ions on the retentions of the analytes were also examined. The recoveries of analytes were generally higher than 95%. The detection limits for Cu2+, Ni2+, Co2+ and Pb2+ were 1.6, 1.3, 1.2, 2.3 ng ml(-1), respectively. The method has been successfully applied for these metals content evaluation in some real samples including natural water samples.
已报道了一种用于同时预富集实际样品中具有营养重要性的矿物质的灵敏且简便的方法。该方法基于Cu2+、Ni2+、Co2+和Pb2+在负载于活性炭上的4-丙基-2-硫脲（PUT）上的吸附。配合物上的金属用5 mL 3 M硝酸在丙酮中的溶液洗脱。研究了包括pH和样品体积在内的分析参数的影响。还考察了基体离子对分析物保留的影响。分析物的回收率一般高于95%。Cu2+、Ni2+、Co2+和Pb2+的检测限分别为1.6、1.3、1.2、2.3 ng ml-1。该方法已成功应用于包括天然水样在内的一些实际样品中这些金属含量的评估。
