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. 2022 Oct 27;94(44):15440–15447. doi: 10.1021/acs.analchem.2c03422

Table 4. Reduced Ion Mobilities K0 in cm2/Vs of Precursors and/or Simulants of CWAs as Well as Common Interfering Substances Measured with the Miniaturized High-Performance Drift Tube IMS.

  K0 in cm2/Vs false positives when using the miniaturized high-performance drift tube IMS
Precursor and/or simulants
TMP 1.764 (+), 1.363 (+) none
TEP 1.559 (+), 1.230 (+) GA
2-mercaptoethanol 1.785 (+), 1.600 (+), 1.892 (−) none
dipropylene glycol monomethyl ether 1.653 (+), 1.223 (+) none
dimethyl methylphosphonate 1.804 (+), 1.410 (+) none
diethyl methylphosphonate 1.648 (+), 1.220 (+) none
diisopropyl methylphosphonate 1.527 (+), 1.092 (+) none
methyl salicylate 1.503 (−), 1.709 (+) none
Interfering substances
acetic acid 1.989 (−), 1.671 (−) none
triethylamine 1.881 (+), 1.500 (+) none
N,N-dimethylformamide 2.019 (+), 1.663 (+) none
methylisoketone 1.739 (+), 1.391 (+) none
gasoline vapor 1.838 (+), 1.762 (+), 1.690 (+) GB
AFFF (firefighting foam) 1.534 (+), 1.113 (+) none
JP8 (jet propellant) 1.705 (+), 1.387 (+) none
diethyltoluamide (insect repellent) 1.895 (+), 1.672 (+) none
eucalyptol (eucalyptus oil) 1.555 (+), 1.191 (+), 1.153 (+) none