"Method Developments To Analyze Caffeine And Acesulfame-K Concentration" by Laleen Bodhipaksha

Graduate Program

Chemistry

Degree Name

Master of Science (MS)

Semester of Degree Completion

2011

Thesis Director

Doug Klarup

Thesis Committee Member

Gopal Periyannan

Thesis Committee Member

Jonathan Blitz

Thesis Committee Member

Mark McGuire

Abstract

Analytical methods using batch solid phase extraction were developed for two chemical markers, caffeine and acesulfame-K, to assess anthropogenic water contamination of natural water bodies in and around Charleston, Illinois.

Measurements were conducted on 12 different extracted samples using reverse phase HPLC. Two creek samples showed the presence of acesulfame-K (0.45 ± 0.10 and 0.25 ± 0.06 ppb) and two creek samples showed the presence of caffeine (3 .1 ± 1.2 and 1.6 ± 0.6 ppb ). Effluent from the Charleston waste water treatment plant showed an acesulfame-K concentration of 0.67 ± 0.15 ppb.

These results indicate measurement of both markers is helpful in identifying contamination sources in natural water bodies.

Included in

Chemistry Commons

Share

COinS