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WEATHERED PETROLEUM HYDROCARBONS (SILICA GEL CLEAN-UP)
Wright, J. and D. Slee.
Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Newcastle, Australia. CRC CARE Technical Report 40, 77 pp, 2018
The presence of polar metabolite compounds (e.g., alcohols, phenols, ketones, aldehydes, and organic acids) in samples collected from soil and groundwater affected by weathered petroleum hydrocarbons can impede the development of risk assessments based on total recoverable hydrocarbons. The project goal was to identify an appropriate silica gel cleanup (SGC) method for removing polar metabolite compounds prior to the analysis of petroleum hydrocarbons, and to provide guidance on interpretation of the data collected. The in situ SGC method involves adding silica to the extract to form slurry in which the silica then interacts and absorbs polar analytes. In the ex situ method, the extract is applied to a silica gel glass column that removes polars from the extract. The extracts are then analyzed by GC-FID. Advantages and disadvantages of both techniques are discussed. See Technical Report 40 at https://www.crccare.com/publications/technical-reports
Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Newcastle, Australia. CRC CARE Technical Report 40, 77 pp, 2018
The presence of polar metabolite compounds (e.g., alcohols, phenols, ketones, aldehydes, and organic acids) in samples collected from soil and groundwater affected by weathered petroleum hydrocarbons can impede the development of risk assessments based on total recoverable hydrocarbons. The project goal was to identify an appropriate silica gel cleanup (SGC) method for removing polar metabolite compounds prior to the analysis of petroleum hydrocarbons, and to provide guidance on interpretation of the data collected. The in situ SGC method involves adding silica to the extract to form slurry in which the silica then interacts and absorbs polar analytes. In the ex situ method, the extract is applied to a silica gel glass column that removes polars from the extract. The extracts are then analyzed by GC-FID. Advantages and disadvantages of both techniques are discussed. See Technical Report 40 at https://www.crccare.com/publications/technical-reports
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