Best Practices for Collecting Soil Samples for VOC Analysis

October 27, 2021



When it comes to getting accurate and reliable data on volatile organic compounds (VOCs) in soil samples, collecting and preserving the samples correctly is the most important step in the process – the data are only as good as the samples you get. This webinar will take you through the alternatives for soil sample collecting and provide recommendations for getting consistent and usable data.
The options for soil sampling in US EPA Method 5035 will be reviewed and discussed, including the advantages and disadvantages of doing methanol preservation using methanol and sodium bisulfurate. The EPA-listed En Core® Sampler and its "no preservative technology will be compared to methanol preservation methods, along with demonstrations of how both are employed. Tools that can help you collect the right amount of soil for methanol preserved samples, the Terra Core® sampler and others will also be covered in this webinar. 

  • Comparison of soil sampling methods – bulk sampling, preservation and non-preserved samplers
  • Why methanol/sodium bisulfate preservation isn't used everywhere
  • The effect of soil moisture and holding times on VOC concentrations in samples
  • Quality control considerations in the manufacturing of non-preserved samplers
The 45-minute presentation will be followed by a 15-minute Q&A session to answer your questions about Collecting Soil Samples for VOC Analysis.

  • Environmental Specialists and Managers
  • Geotechnical and Environmental Drillers
  • Sampling Technicians
  • Engineers
  • Regulatory Program Managers
Date: Wednesday, October 27
Time: 1:30 p.m. EDT
          45 minute presentation
          15 minute Q & A


David Kaminski  is Senior Vice President of QED Environmental Systems and is a frequent presenter on groundwater sampling technology to organizations, universities, and regulatory agencies worldwide.  He has been awarded four U.S. patents for developing new devices and methods for groundwater sampling applications and is an instructor at the Princeton Groundwater Pollution & Hydrology course ( Over the past 34 years he has published several papers on groundwater sampling practices and sampling system design and has presented these topics at over a hundred conferences, seminars and field courses.

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Environmental and Remediation