Dimethyl sulfate is a moderately volatile compound that is an important reagent in a range of industrial-scale syntheses.
Dimethyl sulfate is also extremely toxic. It is readily and selectively detected to sub-ppbv concentrations in air using both H3O+ and NO+ reagent ions. Rapid switching of these ions within milliseconds – only possible with SIFT-MS – serves to greatly reduce interferences that result in false positives with less selective technologies.
Coupled with a multiple-point sampling device, Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) is an ideal tool for monitoring an area for dimethyl sulfate. The results shown in the trace below demonstrate the rapid response of a Syft Technologies Voice200ultra SIFT-MS instrument when sampling a stream containing elevated levels of hazardous compound is selected on the Syft multi-port inlet (MPI).