title: Ultra-trace analysis of illicit drugs from transfer of an electrostatic lift.
abstract: This article introduces a method of collecting and analysing drug residues that integrates both electrostatic lifting and nanomanipulation-coupled to nanospray ionization mass spectrometry. The application of this hyphenated technique exhibits a useful means of collection and extraction of drug residues with ease and efficiency along with decreased limits of detection. From this method, it will be shown how increased sensitivity of analysis and lower limits of detection for drug analysis can be achieved. The same principles that allow lifting of dust prints by electrostatic lifting can be applied to lifting drug residues. Probing of the drug residues by nanomanipulation occurs directly from the lift, which provides a great platform for extraction. Nanomanipulation-coupled to nanospray ionization-mass spectrometry has been used for the extraction of trace analytes in previous experiments and is known as a very sensitive technique for the detection of ultra-trace residue. This method will demonstrate the electrostatic lifting of drug residue particles from a surface followed by extraction and ionization with nanomanipulation-nanospray ionization. The utility of this novel methodology allows for a more productive analysis when presented with ultra-trace amounts of sample.
authors.affiliation: Department of Chemistry, University of North Texas, Denton, TX, USA.
authors.forename: Nicole
authors.initials: N
authors.lastname: Wallace
authors.forename: Edward
authors.initials: E
authors.lastname: Hueske
authors.forename: Guido F
authors.initials: GF
authors.lastname: Verbeck