A comparative study between different alternatives to prepare gaseous standards for calibrating UV-Ion Mobility Spectrometers

Simultaneous determination of benzene and phenol in heat transfer fluid by head-space gas chromatography hyphenated with ion mobility spectrometry

“…This hypothesis is confirmed according to previous work, where in the presence of nitrogen as the working gas, the detection of M þ ions were observed from aromatic compounds such as benzene by coupling corona discharge-IMS with orthogonal acceleration time of flight mass spectrometry [7]. Moreover, the same benzene K 0 value obtained in this work was previously reported in other papers (1.94 cm 2 V À 1 s À 1 [15] and 1.95 cm 2 V À 1 s À 1 [16]). In general, published K 0 values are considered to match one another if their uncertainties are within 2% ( $ 0.02 cm 2 V À 1 s À 1 ) [17].…”

Potential of ion mobility spectrometry versus FT-MIR and GC-MS to study the evolution of a heat transfer fluid after its heating process in a thermosolar plant

“…The K 0 values obtained for the benzene and phenol ion peaks are 1.94 and 1.75 cm 2 V −1 s −1 , respectively. Similar values for benzene K 0 were found in the literature, 1.95 cm 2 V −1 s −1 [13] and 2.01 cm 2 V −1 s −1 [14]. Unfortunately, no phenol K 0 values previously determined in the positive mode by IMS were available for comparison.…”

“…Benzene was indeed measured individually by IMS with radioactive and UV ionization in a gasoline sample [11]. Also, benzene gaseous standard was measured by UV-IMS with various sample introduction systems [14], exponential dilution [13], and permeation tubes [12]. Phenol was also determined individually by IMS in combination with MS [15,16].…”

Adhesion of volatile propofol to breathing circuit tubing

“…The latter necessitates calibration to obtain concentrations in ppb. The calibration was performed twice using a calibration gas generator type HovaCal (IAS GmbH, Oberursel, Germany) [11,12].…”