and 275 mL of water were added to each test chamber so the
resulting water/sediment volume ratio was 3:1 and the
minimum sediment layer height was approximately 3 cm.
The aerobic and anaerobic sediment/water samples were
acclimated for 14 days prior to the addition of the test
substance to allow sediment conditions such as pH, 02
content, and redox potential to stabilize.