目的建立工作场所空气中氯乙酸硅胶管采集离子色谱测定法。方法氯乙酸经硅胶管采集,4.5m MNa2CO3+0.8m MNa HCO3淋洗液解吸,离子色谱法测定。结果进样量50μL,氯乙酸浓度在0.50~50μg/ml范围内有良好线性关系,方法 RSD1.2%-3.5%,加标回收率95%-105%,测定范围是:0.16~16.67mg/m3。结论该方法适用于工作场所空气中氯乙酸测定。 Objective To establish a method for ion chromatography of chloroacetic acid silica gel in workplace air. Methods Chloroacetic acid was collected by silica gel tube and desorbed by 4.5m MNa2CO3 + 0.8m MNa HCO3 eluent and determined by ion chromatography. Results The injection volume was 50 μL and the concentration of chloroacetic acid was in the range of 0.50-50 μg / ml. The method RSD was 1.2% -3.5% with the recovery of 95% -105%. The determination range was 0.16-16.67 mg / m3. Conclusion The method is suitable for the determination of chloroacetic acid in the air of workplace.