装修后室内空气中残留苯系物浓度的快速分析

目的建立一种装修后室内空气中苯系物浓度的气相色谱快速分析方法。方法采用活性炭管采样,溶剂解吸气相色谱法,GDX-103玻璃短柱快速测定空气中苯、甲苯、二甲苯浓度。结果该方法苯、甲苯、二甲苯标准曲线相关系数介于0.999 4~0.999 7之间;相对标准偏差RSD(%)分别为0.62、1.02、1.30;最低检出浓度分别为0.03、0.05、0.09 mg/m3,分离分析过程在1 min内。结论该方法简化了分析过程,精确度和准确度能够满足日常检测工作需要,适用于装修后居室内苯系物浓度的快速测定。

Rapid Analysis of Benzene Remains in the Air of Decorated Rooms

Objective] To establish a rapid gas chromatography for determining benzene,toluene and xylene in the air of decorated rooms.Methods] Solvent desorption gas chromatography and GDX-103 glass column were applied to determine benzene,toluene and xylene in the air of decorated rooms.Results] The coefficient of benzene,toluene and xylent correlation ranged from 0.999 4 to 0.999 7;RSD were 0.62%,1.02% and 1.30% respectively;the lowest detection limit were 0.03,0.05 and 0.09 mg/m~3 respectively;the detection period was within one minute.Conclusion] This method simplifies the process of determination and is applicable to the rapid determination of benzene series in the air of decorated rooms.