Carbon in Fracking Water (image) Rice University Share Print E-Mail Caption Rice University researchers performed a detailed analysis of "produced" water from three underground shale gas formations subject to hydraulic fracturing. The chart shows the amounts of total carbon (TC), nonpurgeable organic carbon (NPOC) and total inorganic carbon (TIC) in the samples. Credit Barron Research Group/Rice University Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.