Results of two bilateral comparisons of the determination of hydrocarbon concentrations in coastal seawater by fluorescence spectroscopy |
| |
| Institution: | 1. SINTEF Ocean, Dept. Environmental Technology, Brattørkaia 17C, 7010 Trondheim, Norway;2. The Norwegian University of Science and Technology, Dept. Cancer Research and Molecular Medicine, 7491 Trondheim, Norway;3. Bielefeld University, Centre for Biotechnology (CeBiTec), 33501 Bielefeld, Germany |
| |
| Abstract: | During two recent research cruises, comparisons were made of measurements of hydrocarbon concentrations in seawater by fluorescence spectroscopy. Participants used their own samplers and methods to collect and analyse duplicate samples of subsurface water; 21 stations were sampled during the first cruise and 15 during the second. When samples containing hydrocarbons at concentrations of 1–2 μg l−1 Ekofisk crude oil equivalents were extracted using solvents of similar polarity, i.e. pentane or hexane, results on average varied by 22% and 23% in the two exercises. Use of dichloromethane as an extraction solvent gave results around 2× higher; the reasons for this are discussed. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
