Table 2 Overview of the discussed in situ tests performed for the BN experiment
Test code | Interval | \({\text{NO}}_{3}^{ - }\) | \({\text{NO}}_{2}^{ - }\) | CH3COO− | H2 (dissolved) | Start date | Time of e− donor pulse | Sterility solution injected | Parallel injection of tracers |
|---|---|---|---|---|---|---|---|---|---|
INT1_2011 | 1 | 1.5 | – | – | – | 2011-03-16 | No pulse injection | Not sterile | Br− and 2H–H2O |
INT1_2014 | 1 | 15 | – | – | 2.3 | 2014-10-01 | 54 days | Sterile | – |
INT1_2015 | 1 | 15 | – | – | 1.6 | 2015-09-23 | 48 days | Sterile | Br− |
INT2_2011a | 2 | 1.1 | 0.8 | 0.8 | – | 2011-03-16 | No pulse injection | Not sterile | Br− and 2H–H2O |
INT2_2011b | 2 | 1.1 | – | 0.3 | – | 2011-05-31 | No pulse injection | Sterile | – |
INT2_2013 | 2 | 25 | – | 4 | – | 2013-11-05 | 70 days | Sterile | – |