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Analysis of Petroleum Hydrocarbons in Soil for Regulatory Compliance

This presentation covers the methodology for analyzing petroleum hydrocarbon concentrations in soil, essential for ensuring regulatory compliance. It details the preservation of volatile samples using sodium bisulfate and methanol and the collection of semi-volatile samples in unpreserved jars, with all samples kept on ice. The process involves mixing C6-C10 hydrocarbons with methanol, performing decantation, and generating chromatograms for concentration determination. Calibration is achieved through gas chromatography, allowing for precise measurement of hydrocarbons (mg/kg) based on areas below peaks.

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Analysis of Petroleum Hydrocarbons in Soil for Regulatory Compliance

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  1. Focusing on measurements set up, calculation and presentation of the (imaginary) results of analysis, create ≤ 2 pptx slides on one of the following topics:

  2. PetroleumHydrocarbons in Soil • Purpose: to analyzepetroleumhydrocarbonconcentrations in soil for regulatorycompliance • Volatilesamplespreserved in sodiumbisulfate and methanol, semi-volatilesamplesunpreservedjars. Allsamplespreserved on ice.

  3. Petroleum Hydrocarbons in Soil C6-C10 hydrocarbons + Methanol (1:2) Mixing Decantation Chromatograms and calibration data allow determining the amount of hydrocarbons (mg/kg) by measuring areas below representative peaks C10-C50 hydrocarbons + 50:50 n-hexane:acetone (1:20) Soxhlet extraction Cleanup with silica gel Heavy hydrocarbons Gravimetric determination He 100% poly(dimethylsiloxane) Minimumlenght: 35m Maximum diameter: 0,53 mm • Calibration: known amounts of hydrocarbons are mixed with an organic solvent and analyzed through gas chromatography • Average response factor is calculated

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