论文部分内容阅读
分别于Shim-pack PNH_2和Zorbax CN柱上,研究了Fe(Ⅱ)、Co(Ⅱ)和Ni(Ⅱ)与6-Br-BTADAP之螯合物的HPLC分离条件;提出了于Shim-pack PNH_2柱上,用环己烷-乙酸乙酯-异丙醇(48:40:12,V/V)作流动相(1.0m/min)的HPLC同时测定此三元素的新方法。校正曲线之线性范围是0.025～4.0ppm Fe(Ⅱ)、0.1～2.0ppm Co(Ⅱ)和0.05～2.5ppm Ni(Ⅱ),其绝对检出限分别是0.61、0.40和0.20ng。异离子:Cd(Ⅱ)、Cu(Ⅱ)、Hg(Ⅱ)、Mn(Ⅱ)、Pb(Ⅱ)、Zn(Ⅱ)和Fe(Ⅱ),无干扰。本方法已应用于实际样品的分析。
The conditions for the separation of chelates of Fe (Ⅱ), Co (Ⅱ) and Ni (Ⅱ) with 6-Br-BTADAP were studied on Shim-pack PNH_2 and Zorbax CN columns respectively. Column, a new method for simultaneous determination of these three elements by HPLC using cyclohexane-ethyl acetate-isopropanol (48:40:12, V / V) as the mobile phase (1.0 m / min) The linear range of the calibration curve is 0.025-4.0ppm Fe (Ⅱ), 0.1-2.0ppm Co (Ⅱ) and 0.05-2.5ppm Ni (Ⅱ). The absolute detection limits are 0.61,0.40 and 0.20ng, respectively. Different ions: Cd (Ⅱ), Cu (Ⅱ), Hg (Ⅱ), Mn (Ⅱ), Pb (Ⅱ), Zn (Ⅱ) and Fe (Ⅱ) This method has been applied to the actual sample analysis.