Natural attenuation of MTBE and BTEX compounds in a petroleum contaminated shallow coastal aquifer

被引：15

作者：

Gelman, Faina ^{[1
]}

Binstock, Ruth ^{[1
]}

机构：

[1] Geol Survey Israel, IL-95501 Jerusalem, Israel

来源：

ENVIRONMENTAL CHEMISTRY LETTERS | 2008年 / 6卷 / 04期

关键词：

petroleum contamination; CSIA; isotope enrichment; natural attenuation; biodegradation;

D O I：

10.1007/s10311-007-0125-y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Natural attenuation of MTBE and BTEX compounds in a petroleum contaminated coastal aquifer in the Tel-Aviv area was investigated. Significant decrease in MTBE concentration and complete disappearance of BTEX compounds occur within 100 m groundwater flow. Highly anaerobic conditions were determined in the close vicinity to the spill source. In order to examine the contribution of microbial degradation to the attenuation process at anaerobic conditions, compound-specific carbon isotope ratio analysis was employed. Carbon isotope enrichment of toluene up to 2.4% along with the drop in its concentration up to 80% was observed within 20 cm below the water table. The lack of isotope fractionation despite the significant concentration decrease for other studied compounds indicates significant contribution of abiotic processes to the natural attenuation.

引用

页码：259 / 262

页数：4

共 14 条

[1] Carbon isotope fractionation during anaerobic biodegradation of toluene: Implications for intrinsic bioremediation [J].