Detection, Identification and Quantitative Analysis of Dihaloacetonitriles in Chlorinated Natural Waters
Trehy, ML; Bieber, TI
| HERO ID | 4968791 |
|---|---|
| In Press | No |
| Year | 1981 |
| Title | Detection, Identification and Quantitative Analysis of Dihaloacetonitriles in Chlorinated Natural Waters |
| Authors | Trehy, ML; Bieber, TI |
| Abstract | The chlorination of natural water is responsible for the formation of trihalomethane (THM) and dihaloacetonitriles (DHAN). A liquid-liquid extraction (LLE) procedure has been used extensively for THM and DHAN analysis. The method is a modification of that developed by Henderson et al which used a squalane-coated Chromasorb in the column. The technique was applied to the analysis of THM and DHAN in spiked water samples and chlorinated natural waters. The LLE method avoids elevated temperature in the presence of water, thus minimizing hydrolysis. Since pentane extracts are injected, the chromatography occurs in the virtual absence of water. Use of a 10% squalane column does not degrade the DHAN. The dechlorinating agents sodium thiosulfate, sodium sulfite, and ferrocyanide reacted with the DHAN. Candidate precursors for DHAN are considered to be certain amino acids, polypeptides containing the corresponding amino acyl groups at the N-terminus , and humic and fulvic substances with amino acid moieties appended to the ring system. (See also W88-00406) (Geiger-PTT) |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Chlorination; Organic compounds; Pollutant identification; Separation techniques; Chromatography; Water treatment; Water analysis |