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目的探讨一次采样同时测定工作场所空气中盐酸、硫酸和氟化氢的方法。方法以多孔玻板吸收管采样,选择最佳仪器条件、合适的流动相,用离子色谱法测定盐酸、硫酸和氟化氢的含量。结果盐酸、硫酸、氟化氢的检出限分别为0.06、0.35、0.08mg/L,各物质的相对标准偏差均在4.36%以下,平均回收率在95.0%～102.2%之间。结论该方法操作简便,灵敏度高,精密度好。
Objective To explore a method for simultaneous determination of hydrochloric acid, sulfuric acid and hydrogen fluoride in the air of workplace by one sampling. Methods Samples were taken from a perforated glass tube, and the best instrument and suitable mobile phase were selected. The contents of hydrochloric acid, sulfuric acid and hydrogen fluoride were determined by ion chromatography. Results The detection limits of hydrochloric acid, sulfuric acid and hydrogen fluoride were 0.06,0.35 and 0.08 mg / L, respectively. The relative standard deviations of all substances were below 4.36% with the average recoveries between 95.0% and 102.2%. Conclusion The method is simple, sensitive and precise.