| Main Title |
Gas Chromatography/Mass Spectroscopy Analysis of Mutagenic Extracts of Aqueous Chlorinated Humic Acid. A Comparison of the Byproducts to Drinking Water Contaminants. |
| Author |
Coleman, W. E. ;
Munch, J. W. ;
Kaylor, W. H. ;
Streicher, R. P. ;
Ringhand, H. P. ;
|
| CORP Author |
Health Effects Research Lab., Research Triangle Park, NC. |
| Year Published |
1984 |
| Report Number |
EPA/600/J-84/113; |
| Stock Number |
PB85-104909 |
| Additional Subjects |
Humic acids ;
Water pollution ;
Comparison ;
Contaminants ;
Gas chromatography ;
Mass spectroscopy ;
Reprints ;
Drinking water
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB85-104909 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
9p |
| Abstract |
Formation of mutagenic compounds as a result of aqueous chlorination of humic acids has been demonstrated. Solvent extracts responding positively to the Ames test were analyzed by GC/MS in an attempt to identify the mutagenic components. Aliquots of the chlorinated humic solution were also analyzed by closed-loop stripping and GC/MS. Results of GC/MS analyses of methylene chloride and ether extracts and of the closed-loop-stripping extract indicated that trihalomethanes and halogenated acetic acids, acetonitriles, 2-propanones, propenals, propenenitriles, propenes, phenols and thiophenes were formed by the aqueous chlorination of humic acids at neutral pH. The concentrations of eight of the halogenated by-products accounted for about one fourth of the total organic halogen (TOX) content of the aqueous chlorinated humic acid solution. The mass spectra of tentatively identified compounds are included. The similarity of mutagenic compounds identified in this study with compounds previously identified in drinking water suggests that the reaction of chlorine with natural aquatic humics is a likely source of mutagen formation in drinking water. Some data on the production of halogenated compounds from the chlorination of humics in the presence of bromide (Br-) at various molar concentrations are also included. |
| Supplementary Notes |
Pub. in Environmental Science and Technology, v18 n9 p674-681 1984. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Gas Chromatography/Mass Spectroscopy Analysis of Mutagenic Extracts of Aqueous Chlorinated Humic Acid. A Comparison of the Byproducts to Drinking Water Contaminants. |
| PUB Date Free Form |
1984 |
| Category Codes |
6T; 6F; 57Y; 68D |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/11 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
500426826 |
| Origin |
NTIS |
| Type |
CAT |
