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. 2018 Dec 3;53(1):20–28. doi: 10.1021/acs.est.8b05079

Figure 2.

Figure 2

Oxygen saturation in the headspace of the reference samples for all four soils during the tetralin main study using test setup 2. A pair of reference samples were used, one being applied with and the other without solvent. The samples applied with solvent were oxygenated when oxygen saturation was <15%, and continuous depletion in the oxygen saturation was observed between 0 and 14 days. The oxygen measurements were done without the need to open the test vessel using an optical oxygen meter (Firesting, Pyroscience).