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VOC Guidelines – USGS OCALA, USGS Water-Quality Service Unit at Ocala, Florida; NWQL, National Water Quality Laboratory; VG, VOC grade blank; VBW, pesticide/volatile blank water] Sampling equipment and supplies Volatile organic compound (VOC) sampler (Wildco 990-J98) Vial, glass, amber septum, 40 milliliter (NWQL and OCALA 333FLD) Rope, nylon, 1/4-inch diameter transparent volatile organic analysis vials for lab use The recognition of volatile organic compounds (VOCs) involved in inse...

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Revealing Molecular Mechanisms in Hierarchical Nanoporous Oct 22, 2020 · We synthesized hierarchical nanoporous carbons from wood, which exhibit Murray’s law multiscale structures. We probe a molecular-scale study of adsorbate adsorption via nuclear magnetic resonance (NMR). Acetone vapor adsorption results show NMR chemical-shift changes with time, suggesting initial adsorption into mesopores, followed by diffusion into micropores. Schroeder’s paradox is ultra clean VOA vials...

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