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Quantitative analysis of trace‐level benzene, toluene, ethylbenzene, and xylene in cellulose acetate tow using headspace heart‐cutting multidimensional gas chromatography with mass spectrometry
Author(s) -
Ji Xiaorong,
Zhang Jing,
Guo Yinlong
Publication year - 2016
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201600237
Subject(s) - ethylbenzene , toluene , benzene , mass spectrometry , chromatography , chemistry , btex , gas chromatography , xylene , gas chromatography–mass spectrometry , quantitative analysis (chemistry) , volatile organic compound , two dimensional chromatography , cellulose acetate , analytical chemistry (journal) , cellulose , organic chemistry
This study describes a method for the quantification of trace‐level benzene, toluene, ethylbenzene, and xylene in cellulose acetate tow by heart‐cutting multidimensional gas chromatography with mass spectrometry in selected ion monitoring mode. As the major volatile component in cellulose acetate tow samples, acetone would be overloaded when attempting to perform a high‐resolution separation to analyze trace benzene, toluene, ethylbenzene, and xylene. With heart‐cutting technology, a larger volume injection was achieved and acetone was easily cut off by employing a capillary column with inner diameter of 0.32 mm in the primary gas chromatography. Only benzene, toluene, ethylbenzene, and xylene were directed to the secondary column to result in an effective separation. The matrix interference was minimized and the peak shapes were greatly improved. Finally, quantitative analysis of benzene, toluene, ethylbenzene, and xylene was performed using an isotopically labeled internal standard. The headspace multidimensional gas chromatography mass spectrometry system was proved to be a powerful tool for analyzing trace volatile organic compounds in complex samples.