尿中四氢呋喃的顶空固相微萃取-气相色谱测定法

目的 建立测定尿中四氢呋喃的顶空固相微萃取-气相色谱法.方法 以顶空固相微萃取技术处理尿样,用带氢焰离子化检测器的气相色谱仪测定尿中的四氢呋喃.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.结果 在优化条件下,方法 的线性较好,样品的加标回收率为93.0%～100.8%,相对标准偏差为0.96%～3.85%,检出限可以达到0.5μg/L.结论 该方法 适用于尿中四氢呋喃的测定.

Abstract：

Objective Headspace solid-phase microextraction (HS-SPME) was used pre-concentration procedure for the determination of tetrahydrofuran in urine by gas chromatography with hydrogen flame detector. Methods Several parameters controlling SPME was studied and optimised: SPME fiber, extraction time and extraction temperature, desorption time and desorption temperature. Results Under optimal conditions, the correlation coefficient was 0.9998 and good recoveries (range from 93.0%～100.8%) were achieved,the detection limit was 0.5μg/L. Conclusion The method can be applied to the determination of trace amount of tetrahydrofuran in urine.

Determination of tetrahydrofuran in urine by headspace solid-phase microextraction and gas chromatography

Objective Headspace solid-phase microextraction (HS-SPME) was used pre-concentration procedure for the determination of tetrahydrofuran in urine by gas chromatography with hydrogen flame detector. Methods Several parameters controlling SPME was studied and optimised: SPME fiber, extraction time and extraction temperature, desorption time and desorption temperature. Results Under optimal conditions, the correlation coefficient was 0.9998 and good recoveries (range from 93.0%～100.8%) were achieved,the detection limit was 0.5μg/L. Conclusion The method can be applied to the determination of trace amount of tetrahydrofuran in urine.