Lichvanová Zuzana, Ilbeigi Vahideh, Sabo Martin, Tabrizchi Mahmoud, Matejčík Stefan
Comenius University in Bratislava, Faculty of Mathematics, Physics and Informatics, Department of Experimental Physics, Mlynská dolina, F2 842 48 Bratislava, Slovakia.
Chemistry Department, Isfahan University of Technology, Isfahan 84154, Iran.
Talanta. 2014 Sep;127:239-43. doi: 10.1016/j.talanta.2014.04.021. Epub 2014 Apr 24.
In this work possible application of the corona discharge-ion mobility spectrometer (CD-IMS) for detection of 2,4,6-Trichloroanisole (TCA) has been investigated. We applied CD-IMS interfaced with orthogonal acceleration time of flight mass spectrometer (CD-IMS-oaTOF) to study the ion processes within the CD-IMS technique. The CD-IMS instrument was operated in two modes, (i) standard and (ii) reverse flow modes resulting in different chemical ionisation schemes by NO3(-)(HNO3)n (n=0,1,2) and O2(-)(H2O)n (n=0,1,2), respectively. The O2(-)(H2O)n ionisation was associated with formation of Cl(-) and (TCA-CH3)(-) ions from TCA. The NO3(-)(HNO3)n ionisation, resulted in formation of NO3(-)(HNO3)(TCA-Cl) adduct ions. Limit of detection (LOD) for TCA was determined in gas (100 ppb) and solid phases (150 ng).
在这项工作中，研究了电晕放电-离子迁移谱仪（CD-IMS）用于检测2,4,6-三氯苯甲醚（TCA）的可能性。我们应用与正交加速飞行时间质谱仪联用的CD-IMS（CD-IMS-oaTOF）来研究CD-IMS技术中的离子过程。CD-IMS仪器以两种模式运行，（i）标准模式和（ii）逆流模式，分别通过NO3(-)(HNO3)n（n = 0,1,2）和O2(-)(H2O)n（n = 0,1,2）产生不同的化学电离方案。O2(-)(H2O)n电离与TCA形成Cl(-)和(TCA-CH3)(-)离子有关。NO3(-)(HNO3)n电离导致形成NO3(-)(HNO3)(TCA-Cl)加合离子。测定了TCA在气相（100 ppb）和固相（150 ng）中的检测限。
