王 斌,薛志伟,邰文亮.电导-紫外检测器联用离子色谱法测定水样中的7种阴离子[J].中国无机分析化学,2017,7(3):25-28.
电导-紫外检测器联用离子色谱法测定水样中的7种阴离子
Detection of 7 Kinds of Anions in Water by a combined ultraviolet-conductance Ion Chromatography
投稿时间:2017-03-08  最后修改时间:2017-05-20
DOI:doi:10.3969/j.issn.2095-1035.2017.03.007
中文关键词:  电导-紫外检测联用  离子色谱法  水样  阴离子
英文关键词:conductance-ultraviolet combined  ion chromatography  water sample  anion
基金项目:
        
作者单位
王 斌 核工业二〇三研究所,陕西 咸阳 712000
薛志伟 核工业二〇三研究所,陕西 咸阳 712000
邰文亮 核工业二〇三研究所,陕西 咸阳 712000
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中文摘要:
      以电导-紫外检测器联用离子色谱法同时测定水中的F-、Cl-、NO2-、Br-、NO3-、I-和SO42-。样品经TSK gel guard column Suppe IC-Anion HS 保护柱以及TSK gel Suppe IC-Anion HS分离柱分离,以NaHCO3(2.0 mmol/L)- Na2CO3(3.0 mmol/L)为流动相,流速1.5 mL/min,柱温40 ℃,采用抑制电导检测器与紫外可见检测器串联检测。其中,F-、Cl-、Br-和SO42-使用电导检测器,NO2-、NO3-和I-采用紫外检测器。7种离子均具有宽广的线性范围,其线性相关系数r>0.999。对饮用纯净水以及海水两种实际样品进行测定和加标回收实验,加标回收率在92.8%~107%,测定值的相对标准偏差(n=6)在0.89%~5.7%。方法具有分析速度快,检出限低,精密度好等优点。在实际工作中具有很强的实用性和可推应用价值。
英文摘要:
      F-, Cl-, NO2-, Br-, NO3-, I- and SO42- in water were determined by simultaneous conductance-ultraviolet ion chromatography. Sample was separated with TSK gel guard column Suppe IC-Anion HS guard column and TSK gel Suppe IC-Anion HS separation column. NaHCO3 (2.0 mmol/L)-Na2CO3(3.0 mmol/L) was selected as mobile phase with the flow rate of 1.5 mL/min and column temperature of 40 ℃. Inhibitory conductance and ultraviolet, which are connected in series, were adopted as the combined detection sensor. F-, Cl-, Br-and SO42- were detected by a conductance detector, while NO2-, NO3- and I- were detected using an ultraviolet detector. For 7 kind of anions, this method showed good linearity over a wide analysis range with correlation coefficients greater than 0.999. Pure drinking water and seawater were selected as the authentic samples for quantitative analysis and the recovery of the standard addition. The addition recoveries were in the range of between 92.8%—107%, and RSD (n=6) was found in the range of 0.89% —5.7%. This method provides as fast analysis speed, low detection limit and good precision; and is suitable for practical applications.
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