关键词: 工作场所空气, 异丙基缩水甘油醚, 气相色谱, 职业卫生

Abstract: Objective To establish a method for determination of isopropyl diglycidyl ether（IGE） in workplace air by solvent desorption-gas chromatography. Methods The samples were collected with carbon tube and desorbed by 5% acetone-carbon disulfide,separated with the DB-FFAP gas chromatographic column,and detected by flame ionization detector（FID）. Results The quantitative determination range of IGE was 3.0-919.0 μg/mL,with a correlation coefficient of 0.999 9. The limit of detection was 0.9 μg/mL. The lower limit of quantification was 3.0 μg/mL. Under 1.5 L sampling volume and 1.0mL extraction solution volume,the minimum detectable concentration was 0.6 mg/m3 and the minimum quantification concentration was 2.0 mg/m³. The relative standard deviation（RSD） of intra-assay and inter-assay precision was 1.6%-3.1% and 3.5%-4.9% respectively. The average extraction efficiency was 98.6%. The penetration capacity was >15.0 mg. The average collection efficiency was 100%. When placed in air,the samples could be stored for seven days. When placed in 4℃ refrigerator,the samples could be stored for 14 days. The potential coexistence of n-butanol and epichlorohydrin with IGE in the air did not interfere with the results of determination. Conclusion This method has high sensitivity,precision and accuracy and it is applicable for the on-site monitoring of IGE in workplace air.

Key words: Air of workplace, Isopropyl diglycidyl ether, Gas chromatography, Occupational health