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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Analysis of the volatile components emitted from cut tobacco processing by gas chromatography/mass spectrometry thermal desorption system
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Analysis of the volatile components emitted from cut tobacco processing by gas chromatography/mass spectrometry thermal desorption system

机译：气相色谱/质谱热解吸系统分析烟丝加工过程中释放的挥发性成分

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摘要

A sensitive and reliable method was developed for the determination of volatile components emitted from cut tobacco processing using thermal desorption (TD) followed by gas chromatography-mass spectrometry (GC-MS). In the work, to obtain the optimal sorbent, three commercial sorbents were compared in terms of adsorption efficiency. The carbotrap 349 was found to have the best performance. The desorption conditions were also studied. Validation of the TD-GC-MS method showed good sensibility, linearity and precision. Limits of detection ranges were from 0.20 to 3.6 ng. Calibration curves were obtained by plotting peak area versus concentration and the correlation coefficients relating to linearity were at least 0.9984. The analysis was reproducible, with relative standard deviation (n=8) within 6.5%. The target compound breakthrough examination showed no significant losses when about 1500 ng standards were prepared. In order to evaluate the performance of the analytical method in the volatile constituents of cut tobacco, samples were taken in industrial areas of cut tobacco processing. Recoveries ranged from 85.1% to 110% for all the compounds and good precision had been reached (RSD<13.3). The results proved that TD-GC-MS was a simple, rapid and accurate method for the analysis of volatile compounds emitted from cut tobacco drying step.
机译：开发了一种灵敏而可靠的方法，用于测定使用热脱附（TD），然后进行气相色谱-质谱（GC-MS）分析的烟丝加工过程中产生的挥发性成分。在工作中，为了获得最佳的吸附剂，比较了三种商业吸附剂的吸附效率。发现自动陷井器349具有最佳性能。还研究了解吸条件。 TD-GC-MS方法的验证显示出良好的灵敏度，线性和精密度。检测范围的下限为0.20至3.6 ng。通过绘制峰面积对浓度的曲线获得校准曲线，并且与线性相关的相关系数至少为0.9984。该分析是可重复的，相对标准偏差（n = 8）在6.5％以内。当制备约1500 ng的标准液时，目标化合物的穿透检查未显示任何重大损失。为了评估分析方法在烟丝挥发性成分中的性能，在烟丝加工的工业领域中取样。所有化合物的回收率在85.1％至110％之间，并且达到了良好的精密度（RSD <13.3）。结果证明，TD-GC-MS是一种简便，快速，准确的方法，用于分析烟丝干燥步骤中排放的挥发性化合物。

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