Research Interests |
Our major goal is to devise innovative methods for separation and
chemical analysis. Work is also directed towards understanding the
fundamental principles involved and for the preparation of resins and
reagents necessary for the research. Past examples have included
solid-phase extraction (SPE) for preconcentration of trace organic
substances from water, and pioneering work in ion chromatography. Both
SPE and ion chromatography are now considered to be essential methods
in most analytical laboratories.
Our major current research is in the following areas:
Methods for separation and speciation of chemical substances, such
as anions, metal cations, and organic compounds. These methods
include capillary electrophoresis (CE), ion chromatography (IC),
and liquid chromatography (LC). The rationale for pursuing research
in this area is simply that chromatography (including CE) is the
most widely used analytical method in the world. Advances in many
branches of science and technology depend on a steadily growing
capability for chemical analysis.
New resin particles and techniques for solid-phase extraction (SPE)
and for various types of chromatographic separations. Sample
pretreatment is often a critical step in a chemical analysis. SPE
is a clean analytical procedure that is replacing polluting methods
that use relatively large amounts of liquid organic solvents. Our
group is recognized as a leader in developing superior materials
and techniques for SPE.
Studies directed towards a better understanding of fundamental
analytical separation processes. Current examples include the
effect of mobile phase additives on resin surfaces in liquid
chromatography and mechanisms involved in separation of inorganic
cations and anions by capillary electrophoresis.
We have a continuing interest in methods for analysis and cleanup
of nuclear and other toxic wastes. Our experience in chelating
resins should be valuable in attacking waste problems of the 2000s.