AWWA WQTC69299

This powerpoint presentation presents the Spectral Fluorescent Signatures (SFS) Technique as a tool that not only rapidly determines dissolved organic carbon (DOC) concentrations, but fractions that may be targeted individually, and it can also predict THM formation potential (THMFP). Analytical methods include the following: sampling - Delaware-Raritan Canal and its tributaries in central New Jersey in October 2006 through June 2008; organic carbon analysis - to measure the actual values of DOC and six DOM fractions; natural organic matter fractionation - to separate six DOM fractions from sample for measurement and further analysis; fluorescence spectrometry - to obtain spectral fluorescent signatures for original samples, separated fractions, and prepared mixtures; and, THMFP - Standard Method 5710B, and EPA method 551.1 (GC-ECD). Statistical software includes the following: Statistical Analysis Software (SAS) - SAS was used for model building, automation, validation, and all the advanced statistical post processing; Minitab 15 - Minitab was used for preliminary data transformation and simple matrix operations; and, Microsoft Excel - Excel was used mainly for data storage, simple mathematical operations, and final model testing. Presentation summary and conclusions indicate the following: unique fluorescence properties including peak location for each of the six DOM fractions were identified and utilized in building of the model; several different techniques from analytical chemistry and statistics have been innovatively applied in developing the model, such as scatter removal, analysis of peaks, design of mixtures within reported range of natural occurrence, and PCR; model has ability to predict the DOC, six DOM fractions, concentrations, and THMFP using single SFS; and, faster performance and improved reliability with wide range of applicability in comparison with the earlier models. Includes tables, figures.