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建立了离子色谱体系测定地表水中无机阴离子的方法。研究了离子色谱仪的各项工作条件 ,建立了有效的样品处理方法。以固体邻苯二甲酸和碳酸钠处理样品 ,百里酚酞作指示剂 ,用DIONEX AS4A- SC阴离子分析柱及电导检测器测定无机阴离子 ,变化色谱体系以满足不同样品测定的要求。方法操作简便、测定快速 ,已成功地用于地表水样测定 ,结果满意。
A method for determination of inorganic anions in surface water by ion chromatography was established. The working conditions of the ion chromatograph were studied and an effective sample processing method was established. The samples were treated with solid phthalic acid and sodium carbonate and thymolphthalein as indicator. The inorganic anions were determined by DIONEX AS4A-SC anion analytical column and conductivity detector. The chromatographic system was changed to meet the requirements of different samples. The method is simple, rapid determination, has been successfully used in the determination of surface water samples, the results are satisfactory.