Sensitive and Selective Analysis of Polychlorinated Dibenzo-p-dioxins/Dibenzofurans and Their Precursors by Supersonic Jet/Resonance-Enhanced Multiphoton Ionization/Time-of-Flight Mass Spectrometry

A Quantitative Analysis of an Oil Component in an Emulsion by Multiphoton Ionization Mass Spectrometry

“…Moreover, several laser ionization techniques have been reported for the sensitive detection of one or more constituents in a sample. 30,31 Although further studies should establish an appropriate internal standard and a preparation scheme for emulsions, MPI-TOFMS could become a powerful tool for the quantitative analysis of emulsions, and this would allow direct evaluations of stability, such as creaming, by promoting a better understanding of the local concentration of emulsions.…”

Dioxin and polychlorinated biphenyl analysis: Automation and improvement of clean‐up established by example of spices

“…In addition, some cleanup methods have been described for detecting PCDDs/ PCDFs and PCBs especially in human matrices such as blood, serum or milk [8, 7, 17 -19]. Clean-up procedures for different food [9,20,21], feed [22,23] or environmental [1,24,25] matrices have also been very well investigated. However, there are strong distinctions between the qualities of the individual methods.…”

Selective Ionization of 2,4-Xylenol in Mass Spectrometry Using a Tunable Laser and Supersonic Jet Technique

“…The analytical instrument for SSJ/REMPI/TOF-MS has been reported elsewhere in detail, 17 and is only briefly described here. A block diagram of the experimental apparatus is shown in Fig.…”

“…12 The time for analysis was, unfortunately, increased to > 1 h, and the width of the peak became very broad. [16][17][18] However, this approach has not yet been applied to xylenols and ethylphenols.…”