Mineralisation results using 14C octadecane at a range of temperatures

Radiometric data in file radiometric_99.xls, Gas Chromatography data in file gc_99.xls. The radiometric spreadsheet is divided up as follows: CALCULATIONS is how much nutrients, water, radioactivity was added to the sediment. SUMMARY is what went into each microcosm flask. %DPMVRST are recovery graphs of individual flasks.

AVERAGE RECOVERY and FIRST ORDER are graphs. -2A,-2B etc are the raw data for each flask. The number refers to the temperature, the letter refers to the replicate. The gc_99 spreadsheet is divided up as follows: MicroN2B, MicroN2C etc is the raw gas chromatography data, peak areas, heights, amount extracted.

This spreadsheet uses the same codes as the radiometric spreadsheet in the metadata record entitled: 'Mineralisation results using 14C octadecane at a range of water, nutrient levels and freeze thaw cycles'. SUMMARY is the actual hydrocarbon concentrations in ug/g and weathering indices. GRAPHS-ABS are the graphs of absolute concentrations.

GRAPHS-RATIO are the graphs of weathering indices. The fields in this dataset are: Days - Since experiment started. Hours - Since experiment started.

Weight of NaOH (g) Count (dpm) - measurement from radiation counter - disintegrations per minute. Discarded dpm's - counts 'lost' from the system. Used in a 'mass balance'.

Volume NaOH (ml) dpm in trap/dresschel bottle Absolute dpm's % dpm recovered millimole octadecane mineralised Retention Time Area % Area Height of peak Amount Int Type Units Peak Type Codes