• Collecting soils via a closed-system using an open-bore syringe and 40-milliliter (mL) volatile organic analysis (VOA) vials without preservatives as described in Method 5035A, Appendix A, sections A.7.0 and A.8.2.2. NOTE: Samples collected in VOA vials
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2.1.2 Soil samples - at least 2 g of a soil sample are placed into a crimp-seal or screw-top glass headspace vial, along with a matrix modifier and any chemical preservative, at time of sampling. For soils, the matrix modifier also acts as a chemical preservative, so it must be added to the soil during sampling. The headspace vial is then sealed.
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collection and preservation of volatile organic compounds (VOCs) within soil and solid waste samples to be analyzed at a stationary, off-site laboratory. Pre-sampling planning is emphasized as essential for meeting sampling objectives. Method 5035A contains critical information on sampling and analytical requirements and thus should be
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sample contamination as compared to using pre-preserved sample vials. To address significant problems with soil VOC analyses, the method was dramatically revised in Update III of SW-846 (finalized in the June 13, 1997 Federal Register). In particular, Method 5030A was deleted for low-level soil analysis and was replaced with Method 5035.
Generally used for volatile organic compound analysis and sample storage, our 20mL, 40mL, and 60mL VOA vials are available in clear or amber borosilicate glass with our patented .125" PTFE/Silicone Top Hat™ septa. The patented septa, designed by J.G. Finneran, provides a positive physical lock between the septa and closure to assure that.
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Samples for the Gas chromatography-mass spectroscopy (GC-MS) analysis of volatile and non-volatile organics were also collected. Protective overalls, organic vapour filter masks, three pairs of surgical gloves and safety spectacles were worn at all times during sampling.
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Sampling for volatile organic compounds in soil by EPA method Option B - Direct sampling into vial with chemical preservative • Three 5-g size cores are added to vials (two with sodium bisulfate, one with methanol) for each sample plus a TerraCore or other coring sampler. • One nonpreserved container for moisture deter-mination.