| Abstract: | Aquatic humic substances (AHSs) in water generate potentially harmful disinfection by-products (DBPs) such as haloacetic acids (HAAs) and trihalomethanes (THMs) during chlorination. AHSs from two Arkansas reservoirs were characterized to define source, identify meta-dihydroxybenzene (m-DHB) structures as probable DBP precursors, and evaluate predicted HAA and THM formation potentials. Elemental nitrogen content < 1 percent, phenol content > 0.5 ??eq/mg, ??13C values of -27???, and low yields of syringyl phenols found by cupric oxide (CuO) oxidation suggest a pine tree source for the AHSs found in the Maumelle and Winona reservoirs in Little Rock, Ark. CuO oxidation yielded fewer m-DHB structures in Maumelle AHSs than in Winona AHSs. A higher 3,5-dihydroxybenzoic acid (3,5-DHBA) content correlated with increased HAA and THM formation potential. The 3,5-DHBA concentration in Winona AHSs was similar to the range found in AHSs extracted from deciduous leaf litter, twigs, and grass leachates. |
| Genre: | Article |
| ProdID: | 70021738 |
| Citation Author: | Pomes, M. L.; Green, W. R.; Thurman, E. M.; Orem, W. H.; Lerch, H. E. |
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| Citation End Page: | 115 |
| Citation Issue: | 2-3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal / American Water Works Association |
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| Citation Number Of Pages: | 13 |
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| Citation Search Results Text: | DBP formation of aquatic humic substances; 1999; Article; Journal; Journal / American Water Works Association; Pomes, M. L.; Green, W. R.; Thurman, E. M.; Orem, W. H.; Lerch, H. E. |
| Citation Start Page: | 103 |
| Citation Volume: | 91 |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | DBP formation of aquatic humic substances; 1999; Article; Journal; Journal / American Water Works Association; Pomes, M. L.; Green, W. R.; Thurman, E. M.; Orem, W. H.; Lerch, H. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1999 00:00 -0600 |
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