Mineralisation results using 14C octadecane at a range of water, nutrient levels and freeze thaw cycles

Geochemical, microbial and 14C data on remediation of petroleum hydrocarbons in Antarctica.This record is part of ASAC project 1163 (ASAC_1163).Microcosm study using Old Casey petroleum hydrocarbon contaminated sediment investgating the effect of water, nutrients and freze/thaw cycles on biodegradation. Temperature range -4 to 28 degrees. Microcosms with three different levels of nutrients and three different levels of water were investigated. The experiment was run over 95 days.Degradation was traced by radiometric methods and total aliphatic hydrocarbons were measured by gas chromatography.Radiometric data in file radiometric_01.xls, Gas Chromatography data in file gc_01.xls.This work was completed as part of ASAC project 1163 (ASAC_1163).The radiometric spreadsheet is divided up as follows:CODES is a summary of what went into each microcosm.CALCULATIONS is how much nutrients, water, radioactivity was added to the sediment.SUMMARY is what went into each microcosm flask.CT1, CT2 etc is the raw data, what was measured and calculations of radioactivity and recovery of isotope.Note that the Evaporation flasks (i.e., E10a) the number refers to the temperature that the flasks were incubated at, 'a' and 'b' refer to duplicates.AVERAGE is the average recoveries and first order rates of the triplicate microcosm for each treatment. GRAPHS is the graphs.The fields in this dataset are:DaysHoursInitial flask weightNaOH removedNaOH addedWeight of NaOH (g)Count (dpm)Discarded dpm'sVolume NaOH (ml)dpm in trapAbsolute dpm's%dpm recoveredmillimole octadecane mineralised