Combined use of ionic liquids and carbon nanotubes in capillary electrophoresis. An alternative to use of organic solvents.

VALERIA H. SPRINGER; FRANCISCO APRILE; ADRIANA G. LISTA

Uppsalla

Congreso; Analysdagarna 2012; 2012

In the last years, ionic liquids (IL) have been widely used as “green solvents” replacing traditional organic solvents in all areas of separation science because of their unique properties[1].Specially, the room temperature ionic liquids (RTILs) have been used in different separation techniques [2,3].On the other hand, the carbon nanotubes (CNTs) have been widely applied in analytical chemistry due to their special physical/chemical properties[4, 5]. The purpose of the present study is to investigate the potential application of ionic liquids as main component of the separation solution in capillary electrophoresis in order to replace the commonly used electrolyte solutions. Moreover, single walled carbon nanotubes (SWCNTs) are proposed as additive into the background electrolyte solution (BGE) with the aim of improve the resolution of the peaks of analytes.  Sulfonylurea herbicides are proposed as target analytes due to they are commonly employed in Argentina for weed control in crops.