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中文摘要：
建立了毛细管离子色谱-柱切换法测定高纯氢氟酸中的痕量阴离子的方法。实验中所考察的保留时间和峰面积的相对标准偏差（RSD）分别为：0.02%-0.12%和0.63%-1.89%，在1-100 μg/L线性范围内，线性相关系数大于0.9998，考察的阴离子检出限（S/N=3）为2.13-32.61 ng/L，加标回收率为85.3%-103.9%。并用于实际样品检测，取得了很好的效果。
英文摘要：
In this paper, a capillary ion chromatography- column switching method was established to determine trace anions in high-purity hydrofluoric acid solutions. All of the sample pretreatment and separation were performed on the newest ICS-5000 （Thermo Fisher） instrument. The RSDs of retention time and peak area were 0.02%~0.12% and 0.63%~1.89%, respectively. And the linear ranges of anions were 1~100 μg/L with correlation coefficients larger than 0.9998. The limits of detection （S/N=3） for Cl-,Br-,NO3-,and PO43- were 2.13 ~32.61 ng/L, and the recoveries for Cl-,Br-,NO3-,and PO43- were 85.3%~103.9%. The method has been applied to analyze trace anions in true sample with satisfactory results.
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