申请人:EXXON RESEARCH AND ENGINEERING COMPANY
公开号:EP0908925A2
公开(公告)日:1999-04-14
A method for determining the halogen toxicity level in a sample containing halogenated compounds, especially halogen-containing rubbers, utilizes a polychromatic ion source of a mass spectrometer for ionizing a reagent gas capable of producing thermal electrons. The thermal electrons are captured with a halogen-containing compound to form halogen atomic anions or halogen atomic cluster anions. The halogen-containing compound has been passed through a gas chromatograph prior to said capturing of thermal electrons. A mass spectrogram is obtained following said capturing of electrons. The halogen atomic anions or halogen atomic cluster anions are speciated and quantified using a mass chromatogram produced from the combination of said gas chromatography and said mass spectrometer.
一种测定含卤化合物(尤其是含卤橡胶)样品中卤素毒性水平的方法,利用质谱仪的多色离子源电离能够产生热电子的试剂气体。热电子被含卤化合物捕获,形成卤原子阴离子或卤原子团阴离子。在俘获热电子之前,含卤化合物已通过气相色谱仪。俘获电子后可获得质谱图。利用所述气相色谱仪和所述质谱仪结合产生的质谱图,对卤素原子阴离子或卤素原子团阴离子进行标定和定量。