Mineralisation results using 14C octadecane at a range of temperatures

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 investigating the effect of temperature on biodegradation. The experiment was performed over a temperature range of -2 to 42 degrees. The experiment was run over 40 days. Degradation was traced by radiometric methods and total aliphatic hydrocarbons were measured by gas chromatography.Radiometric data in file radiometric_99.xls, Gas Chromatography data in filegc_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 bottleAbsolute dpm's% dpm recoveredmillimole octadecane mineralisedRetention TimeArea% AreaHeight of peakAmountInt TypeUnitsPeak TypeCodes

南极地区石油烃修复的地球化学、微生物学及14C数据

本记录属于ASAC项目1163（ASAC_1163）的一部分。

采用Old Casey地区石油烃污染沉积物开展微宇宙研究，探究温度对生物降解的影响。实验温度范围为-2至42摄氏度，持续40天。通过放射测量法追踪降解过程，并利用气相色谱法测定总脂肪烃含量。放射测量数据存于文件radiometric_99.xls中，气相色谱数据存于文件gc_99.xls中。

放射测量数据表分为以下部分：CALCULATIONS（计算）部分记录添加到沉积物中的营养物质、水分及放射性物质的量；SUMMARY（摘要）部分记录每个微宇宙烧瓶的投入情况；%DPMVRST为各烧瓶的回收率图表；AVERAGE RECOVERY（平均回收率）和FIRST ORDER（一级动力学）为图表；-2A、-2B等为各烧瓶的原始数据，其中数字代表温度，字母代表重复样本。

gc_99数据表分为以下部分：MicroN2B、MicroN2C等为原始气相色谱数据，包含峰面积、峰高及提取量；该数据表使用的编码与题为《不同水分、营养水平及冻融循环条件下14C标记十八烷的矿化结果》的元数据记录中放射测量数据表的编码一致；SUMMARY（摘要）部分记录实际烃浓度（单位：微克/克）及风化指数；GRAPHS-ABS（绝对浓度图表）为绝对浓度的图表；GRAPHS-RATIO（风化指数图表）为风化指数的图表。

本数据集包含以下字段：
天数——实验开始后的天数；
小时数——实验开始后的小时数；
氢氧化钠重量（克）；
计数（dpm，每分钟衰变数）——辐射计数器的测量值；
丢弃的dpm值——系统中“丢失”的计数，用于“质量平衡”；
氢氧化钠体积（毫升）；
收集瓶/德雷谢尔瓶中的dpm值；
绝对dpm值；
dpm回收率；
矿化的十八烷毫摩尔数；
保留时间；
面积；
面积百分比；
峰高；
量；
积分类型；
单位；
峰类型；
编码