Water Science and Technology Directorate, Environment Canada, Burlington, Ontario, Canada.
J Contam Hydrol. 2010 May 20;114(1-4):1-17. doi: 10.1016/j.jconhyd.2010.02.001. Epub 2010 Feb 6.
Analyses of solid-phase sulfur species in soil cores indicate the role of sulfur redox cycling in the fate of a BTEX-rich natural gas condensate plume in a silt-clay aquitard at a gas well site in Alberta, Canada. These analyses confirmed that sulfate reduction has been a key anaerobic electron-accepting process in the plume. The observed concentrations (microg/g sediment) of the reduced solid-phase sulfur components provided evidence regarding the quantity of sulfate that has been reduced over time, and the extent of hydrocarbon plume degradation. The spatial distribution of these phases indicates that degradation of petroleum hydrocarbons linked to sulfate reduction was focused in the capillary fringe, where sulfides and elemental sulfur were the main inorganic sulfur species produced as a result of sulfate reduction.
对土壤岩芯中固相硫形态的分析表明，硫的氧化还原循环在加拿大艾伯塔省一口天然气井场的淤泥粘土地层中富含 BTEX 的天然气凝析油羽流的归宿中起着重要作用。这些分析证实，硫酸盐还原一直是羽流中关键的厌氧电子受体过程。所观察到的固相还原态硫组分的浓度（沉积物中μg/g）提供了有关随时间推移还原的硫酸盐量以及烃羽流降解程度的证据。这些相的空间分布表明，与硫酸盐还原相关的石油烃的降解主要集中在毛细带中，硫酸盐还原产生的主要无机硫形态是硫化物和单质硫。
