Rapid determination of ethylene oxide with fiber-packed sample preparation needle.
Rapid determination of ethylene oxide with fiber-packed sample preparation needle.
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DOI：
10.1016/j.chroma.2008.10.107
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发表时间：
2009-04
期刊：
影响因子：
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通讯作者：
I. Ueta;Yoshihiro Saito;N. Ghani;M. Ogawa;K. Yogo;Akira Abe;S. Shirai;K. Jinno
中科院分区：
文献类型：
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作者：
I. Ueta;Yoshihiro Saito;N. Ghani;M. Ogawa;K. Yogo;Akira Abe;S. Shirai;K. Jinno
将纤维填充样品制备装置应用于空气样品中环氧乙烷(EO)的同时衍生化/预富集。在预处理过程中，将涂覆聚合物的长丝纵向填充到针中，并在长丝上加载溴化氢(HBr)。在气态环氧乙烷的进样过程中，用针中的HBr同时进行衍生化，通过加热的气相色谱(GC)进样器中的萃取针，将相应的衍生化分析物2-溴乙醇解吸。对环氧乙烷的基本萃取/解吸参数进行了估算。方法的检出限为1.8 ng/L，定量限为5.4 ng/L，相对标准偏差小于4%，提取时间约为10min。还证实了在室温下保存三天的良好性能。
Fiber-packed sample preparation device was applied to the simultaneous derivatization/preconcentration of ethylene oxide (EO) in air samples. The polymer-coated filaments were packed longitudinally into the needle, and hydrogen bromide (HBr) was loaded onto the filaments in the preconditioning process. Simultaneous derivatization with HBr in the needle was made during the sampling process of the gaseous EO, and the corresponding derivatized analyte, 2-bromoethanol, was desorbed by passing a small amount of methanol through the extraction needle in the heated gas chromatograph (GC) injector. The basic extraction/desorption parameters for EO have been evaluated. The limit of detection (LOD), limit of quantification (LOQ) and the relative standard deviation (RSD) of run-to-run repeatability were 1.8ng/L, 5.4ng/L and less than 4%, respectively, with an extraction time of about 10min. Satisfactory storage performance for three days at room temperature was also confirmed.