Thomas Guetzloff, West Virginia State University, PO Box 1000, PO Box 1000, Institute, WV 25112-1000
Diaminonaphthalimide Dye (ED-4) is a non-toxic florescent dye that chelates to metals and can quantifiably determine the metal ion concentration of iron (III) in lubricant solutions (Utecht et al., 1992). The dye exhibits a characteristic fluorescence spectrum with and without metal chelation. The fluorescence lifetimes and emission spectra are dependent on the individual metal ion chelated with the dye. However, the usefulness of ED-4 with metal ions comes from examining the emissions at 495 and 530 nm, respectively. The ratio of the fluorescence at 495:530 nm can be used to qualitatively (possibly even quantitatively) determine the Cu (II) concentration in non-aqueous solutions. The goal of the research is to develop a low cost methodolgy for detecting metals in soils on site such as copper.
Back to Sorption and Speciation of Nutrients and Trace Metals in Soils
Back to S02 Soil Chemistry
Back to The ASA-CSSA-SSSA International Annual Meetings (November 12-16, 2006)
