【摘要】 以碳纳米管-氨基硫脲复合物为载体制成碳糊电极,该电极对铁离子具有选择性的Nernst电位响应,其线性范围为3.5×10-7~1.0×10-1mol/L,斜率为30.7 mV/decade,检测下限为1.0×10-7 mol/L。该电极对Fe3+的响应时间为15 s,其选择性良好,并能成功应用于Fe3+的回收率实验。更多还原

【Abstract】 A new modified carbon paste electrode based on the composite of carbon nanotube-thiosemicarbazide as the carrier was prepared. The electrode exhibits a selective Nernst-potential slope of 30.7 mV/decade for Fe3+over a linear range of 3.5 × 10-7~1.0×10-1mol/L. The detection limit of the electrode is 1.0 × 10-7mol/L. The response time of the electrode is 15 s. The electrode shows a good selectivity for Fe3+and it can be successfully applied to the recovery of determination of Fe3+.更多还原