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中国无机分析化学:2020,10(1):54-57
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在线自动配标离子色谱法同时测定饮用水中7种阴离子的含量
侯建国, 陈文梅
(中化地质矿山总局浙江地质勘查院)
Simultaneous Determination of 7 Kinds of Anions by Inline Automatic Calibration with Ion Chromatography in Drinking Water
HOU Jianguo, CHEN Wenmei
(Zhejiang Geological Prospecting Institute,China Chemical Geology and Mine Bureau)
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投稿时间:2019-06-02    修订日期:2019-06-02
中文摘要: 建立了在线自动配标技术同时测定水样中常见阴离子的电导检测-离子色谱分析方法。以较高浓度7种阴离子混标母液,通过万通多思(Disino)在线加液单元定量进样4 ~ 200 μL,7种阴离子进样质量浓度与其峰面积呈良好的线性关系,相关系数均在0.9999以上。水样加标回收率为93.6%~106.5%,测定结果相对标准偏差(RSD)在1.52% ~ 2.79%范围内(n = 6)。在线自动配标方法操作简单,准确度好,能够降低在绘制工作曲线中配置梯度浓度的标样出现的误差,提高分析效率,能够满足水样中F-,Cl-,NO2-,Br-,NO3-,PO43-,SO42- 7种阴离子的测定要求。
Abstract:A conductivity detection-ion chromatography method for simultaneous determination of common anions in water samples was established by inline automatic calibration technology. A high concentration of 7 kinds of anion mixed mother liquor was used to quantitatively inject 4 ~ 200 μL through the Disino online dosing unit. The concentration of the seven anion injections showed a good linear relationship with the peak area. The correlation coefficients were all above 0.9999. The addition recoveries were in the range of between 93.6% ~ 106.5%, and the relative standard deviations (RSD) of the assays ranged from 1.52% to 2.79% (n = 6). The online automatic calibration method is simple in operation and good in accuracy, and can reduce the human error which configuration of the standard concentration in the working curve. The method suitable for the determination of F-, Cl-, NO2-, Br-, NO3-, PO43-, SO42- in the water sample.
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侯建国,陈文梅.在线自动配标离子色谱法同时测定饮用水中7种阴离子的含量[J].中国无机分析化学,2020,10(1):54-57.
HOU Jianguo,CHEN Wenmei.Simultaneous Determination of 7 Kinds of Anions by Inline Automatic Calibration with Ion Chromatography in Drinking Water[J].Chinese Journal of Inorganic Analytical Chemistry,2020,10(1):54-57.

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