Comparison of the sensitivities of seven N-nitrosamines in pre-screened waters using an automated preconcentration system and gas chromatography with different detectors
Jurado-Sánchez, B; Ballesteros, E; Gallego, M
| HERO ID | 4660075 |
|---|---|
| In Press | No |
| Year | 2007 |
| Title | Comparison of the sensitivities of seven N-nitrosamines in pre-screened waters using an automated preconcentration system and gas chromatography with different detectors |
| Authors | Jurado-Sánchez, B; Ballesteros, E; Gallego, M |
| Journal | Journal of Chromatography A |
| Volume | 1154 |
| Issue | 1-2 |
| Page Numbers | 66-73 |
| Abstract | A simple, expeditious procedure for confirming the presence of N-nitrosamines in previously screened positive water samples was proposed. Water samples were continuously aspirated into a photometric flow system for screening. Positive samples were then confirmed and N-nitrosamines were identified by gas chromatography using different detectors (mass spectrometry, flame ionization and nitrogen-phosphorus). The system for the screening purpose was based on the preconcentration of the analytes onto a sorbent column, elution, and derivatization to form nitrite, then formation of a coloured product (Griess reaction) and photometric detection. The detection limits of the gas chromatographic method for 100 ml of sample were 2.0-3.5 microg/l, 20-80 and 3-13 ng/l for flame ionization, nitrogen-phosphorus and mass spectrometric detectors, respectively. The precision as RSD was similar for all detectors (3.0-6.5%). The screening of different types of water showed that wastewaters contain levels of N-nitrosamines that can be detected only using MS as a detector. |
| Doi | 10.1016/j.chroma.2007.03.117 |
| Pmid | 17442322 |
| Wosid | WOS:000247419300008 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |