Download Nome Completo: Ana Valéria Colnaghi Simionato

Sociedade Brasileira de Espectrometria de Massas – BrMASS
General and New Technologies - NEW
A Spartanic Venturi Easy Ambient Sonic-Spray Ionization
Source: Simplifying Mass Spectrometry Ionization to its Upmost
Limit.
Nicolas V. Schwab1*, Andreia M. Porcari1, Mirela B. Coelho1, Jose L. Jara1,
Eduardo M. Schmidt1, Jesui V. Visentainer2, Marcos N. Eberlin1
*
1
ThoMSon
mass
[email protected]
spectrometry
laboratory,
University
of
Campinas
–
UNICAMP, Campinas, SP, Brazil, 13085-970.
2
Departament of Chemistry, University of Maringa - UEM, Maringa, PR,
Brazil, 87020-900.
An exceptionally simple desorption/ionization source for ambient mass
spectrometry is described. Based on Venturi easy ambient sonic-spray ionization1 (VEASI), the source was further simplified by the use of a can of compressed air2 which
simultaneously provides solution or solvent Venturi self-pumping and continuous,
stable and abundant low-noise ion signal via voltage-free sonic-spray ionization for
both liquid and solid samples. Further simplification in source design was also attained
by the use of inexpensive and readily commercially available parts: a syrurgical 2-way
catheter, an aerosol can of compressed air, a 30 cm long fused-silica capillary and a
hypodermic needle. Therefore, this spartanic V-EASI source eliminates all together the
need of droplet’s electrical charging, electrical pumping and gas cylinders and their
regulators which are normally required for spray-based ionization techniques. This
easy-to-assemble fully portable source, which is only assisted by a can of compressed
air and incorporates Venturi self-pumping and sonic spraying seems ideal for in-situ
ambient mass spectrometry using miniature mass spectrometers.
Referências
[1] Santos, V. G.; Regiani, T.; Dias, F. F. G.; Romao, W.; Jara, J. L. P.; Klitzke, C. F.; Coelho, F.;
Eberlin, M. N., Analytical Chemistry, 2011, 83, 1375–1380.
[2] http://science.howstuffworks.com/innovation/everyday-innovations/aerosol-can.htm
4º Congresso BrMass – 10 a 13 de Dezembro de 2011