Abstract:

The headspace solid-phase microextraction is used for pretreating the sample. Combining with gas chromatography, hydrogen flame ion detector is used for determining tetrahydrofuran in the water sample. The optimal conditions are obtained by means of studying the factors, such as, SPME fiber，extraction time and extraction temperature，desorption time and desorption temperature, which have effects on the extraction efficiency. Under optimal conditions, good recovery rate which range from 97.5%-106.7%is achieved. Its relative standard deviation is 3.2%-4.9%and the detection limit is up to 0.10μg/L. The method can be applied to the determination of trace tetrahydrofuran in water.

Key words: headspace solid-phase microextraction, gas chromatography, tetrahydrofuran

摘要：

以顶空固相微萃取为样品的前处理手段,结合气相色谱,以氢焰离子化检测器测定水样中的四氢呋喃。通过对萃取头类型、萃取时间和温度、解吸温度和时间等影响萃取效率的因素的研究,获得了优化的试验条件。在优化条件下,方法的线性较好,样品的加标回收率为97.5%～106.7%,相对标准偏差为3.2%～4.9%,检出限可以达到0.10μg/L,该方法适用于水中四氢呋喃的测定。

关键词: 顶空固相微萃取, 气相色谱法, 四氢呋喃

CLC Number: 

• TU991.21

• X832