Influence of the injection technique and the column system on gas chromatographic determination of polybrominated diphenyl ethers
Influence of the injection technique and the column system on gas chromatographic determination of polybrominated diphenyl ethers
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DOI：
10.1016/j.chroma.2004.04.025
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发表时间：
2004-07-02
影响因子：
4.1
通讯作者：
Östman, C
中科院分区：
文献类型：
--
作者：
Björklund, J;Tollbäck, P;Östman, C
本文研究了气相色谱分离系统对多溴联苯醚（PBDEs）测定的影响。毛细管柱，保留间隙和压配合连接器，以及不同的注射技术进行了评估方面的产量和重复性。分流/不分流进样已进行优化，并与柱上进样、配备隔膜的温度可编程进样器（SPI）和可编程温度蒸发（PTV）进样器进行了比较。此外，对PTV喷射器的不同工作模式进行了比较。结果表明，多溴联苯醚的产量有很大的变化，取决于柱和注射系统。特别是高分子量溴化二苯醚同系物可能受到严重歧视。不利的条件会导致九溴和十溴取代的溴二苯醚同系物完全丧失。(C)2004 Elsevier B. V.保留所有权利。
In this paper, we present an investigation of the influence of the gas chromatographic separation system on the determination of polybrominated diphenyl ethers (PBDEs). Capillary columns, retention gaps and press-fit connectors, as well as different injection techniques have been evaluated with respect to yield and repeatability. The split/splitless injection has been optimized and compared to on-column injection, the septum equipped temperature programmable injector (SPI) and the programmable temperature vaporizing (PTV) injector. Furthermore, a comparison of the different operational modes of the PTV injector is presented. The results show that there are large variations in the yield of PBDEs depending on the column and the injection systems. Especially the high molecular weight BDE congeners can be subject to severe discrimination. Unfavorable conditions can lead to a complete loss of nona and deca substituted BDE congeners. (C) 2004 Elsevier B.V. All rights reserved.