| 离子色谱用于标准物质硝酸根定值的方法研究 |
| |
| 引用本文： | 张利平,邢志,冯璐,李恒. 离子色谱用于标准物质硝酸根定值的方法研究[J]. 现代仪器, 2006, 12(5): 31-33 |
| |
| 作者姓名： | 张利平 邢志 冯璐 李恒 |
| |
| 作者单位： | 1. 内蒙古科技大学包头师范学院化学系,内蒙古,014030
2. 清华大学分析中心,北京,100084 |
| |
| 摘 要： | 用离子色谱研究标准物质硝酸根定值的方法。采用阴离子分析柱IonPacAS19(2mmI.D.×250mm),抑制型电导检测,进样体积25μL,NaOH为等度淋洗液,通过正交设计L9(34)表安排试验,确定优化的色谱条件。NO3-的检出限是0.007mg/L,方法精密度RSD为0.36%,方法线性范围是1.0~100mg/L,样品平均加标回收率在94.2%~104%之间。利用校正曲线的稳定性检查,质控样可靠性检查和回收率检验证明该分析方法是可靠的。该方法简单、快速、灵敏、重复性好,已用于标准物质硝酸根的定值。
|
| 关 键 词： | 离子色谱 硝酸根 标准物质 |
Determination of standard value of nitrate standard solution by ion cromatography |
| |
| Zhang Liping,Xing Zhi,Feng Lu,Li Heng. Determination of standard value of nitrate standard solution by ion cromatography[J]. Modern Instruments, 2006, 12(5): 31-33 |
| |
| Authors: | Zhang Liping Xing Zhi Feng Lu Li Heng |
| |
| Abstract: | The method for exact determination of nitrate in standard solution by ion chromatography with conductivity detector has been developed.The separation of the nitrate was conducted on IonPac AS19 anion exchange column(2mm I.D.x 250mm) with NaOH solution as isocratic eluent,the detection was performed by the suppressed conductivity detector with the injection volume of 25 μL.The optimal chromatography conditions were obtained by orthogonal design L_9(3~4) table.The reliability of method was proved by evaluation of the stability of calibration curve,the test of quality control sample and the recovery.The linearity range of calibration curve is 1.0～100mg/L.The detection limit(3σ),RSD and average recovery of standard addtion are 0.007mg/L,0.36% and 94.2%～104% respectively. |
| |
| Keywords: | Ion chromatography Nitrate Standard Substance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
