About
Dr. Johnson
I earned
my B.S. in Environmental Toxicology from the University of California Davis in 1992
and went on to earn my Ph.D. in Environmental Toxicology with an emphasis in
Analytical Toxicology from Clemson University in 1996. Once again traveling across the country,
I had a one year Post-Doc at Washington State University. I joined Southern Illinois University
Edwardsville in the fall of 1997. I
maintain a fairly active research group comprised of both Graduate and
Undergraduate students. On occasion
I have had high school students also work in the laboratory during the summer.
My current research interests include: Use of critical body residues in ecological risk assessments in lieu of
standardized toxicity data; Development of a novel extraction techniques for POPs in turtle blood along the Tennessee River over a five
year period and with five different species; Use of turtle blood as a biomonitoring technique for pharmaceuticals and some
persistent organic pollutants along the Illinois River; Pharmaceuticals in
water samples, such as determining their: levels, removal strategies, and
toxicity; levels in surface waters along the Illinois River; removal
efficiencies in three different waste water processing treatments; aquatic
toxicity testing of individual, and mixtures thereof, pharmaceuticals found in
both of the above studies; and lastly insecticide exposure analysis in wildlife
(and their prey items).