吹扫捕集/气相色谱法测定空气中挥发性有机物

Study on volatile organic compounds in Air by T&P GC/FID

研究并建立了用吹扫捕集气相色谱法测定空气中挥发性有机物的分析方法。以空气中苯系物为目标化合物,以静态法配制标准气体,分别作了高、中、低三种浓度的标准曲线,其相关系数在0 98以上。该法对空气中苯系物的方法检出限为0 14～0 16μg m3,相对标准偏差在2 1%～6 3%之间,回收率在92%～120%。

The determination of volatile organic compounds in air by T&P GC/FID was established. BETX in air were used as target compounds, BETX standard gas was formulated by static method and their standard curves of high, medium and low concentration were examined. The results showed that their linear correlation coefficient was above 0.98, the RSD were between 2.1%～6.3%, recoveries were between 92%～120% and their method detection limits were 0.14～0.16μg/m^3.