Arts and Sciences
A spectrofluorometric method was established and used to detect and quantify optical brighteners (OB) in ambient water samples. Optical brighteners are added to products such as laundry soaps, detergents, and cleaning agents for the purpose of making the fabric appear brighter after washing. Because a large fraction of OBs are discharged into wastewater, they are ideal for use as indicators of failing septic systems, sewage leaks, or lack of wastewater treatment. The method described here uses moderately priced equipment to provide rapid and accurate detection of minute levels of contamination. Standard curves were prepared with disodium diaminostilbene disulfonate solutions ranging in concentration from 0.3 ppm to 70 ppm. Linear plots with R2 values of ≥ 0.987 were obtained for the standard curves, which were then used to determine the concentration of optical brighteners in water samples.
Kennedy, Sean, "Spectrofluorometric Quantification of Optical Brighteners in Ambient Water" (2014). Symposium on Undergraduate Research and Creative Expression (SOURCE). 330.