吹扫捕集-气相色谱-质谱法测定土壤中挥发酚的方法研究

Purge and trap gas chromatography mass spectrometry for determination of volatile phenols in soil

文章研究了吹扫捕集-气相色谱-质谱法测定土壤中挥发酚的方法,分析了吹扫捕集各参数对挥发酚测定的影响,优化了吹扫捕集条件和气相色谱-质谱条件。通过与索氏提取技术对比,证明吹扫捕集-气相色谱-质谱法在实际样品检测中具有操作简便、分析周期短、试剂用量少、干扰小等优点,适用于测定沸点较低、溶解度较小的挥发酚,推荐选择经典的索氏提取技术测定沸点较高、溶解度较大的挥发酚。

A purge and trap gas chromatography mass spectrometry method was evaluated for the determination of volatile phenols in soil.The conditions of purge and trap gas chromatography mass spectrometry was optimized by analyzing the effects of purge and trap parameters on measurment of volatile phenols.Compared with soxhlet extraction technology,the purge and trap gas chromatography mass spectrometry has been verified in the actual samples that it has the advantages of simple operation,short analysis period,less reagent dosage and small disturbance,and will be suitable for the determination of volatile phenols with low boiling point and low solubility.And the classic soxhlet extraction technology is recommended to determine for those with high boiling point or high solubility.