Transcription of Guide to Solid Phase Extraction - Sigma-Aldrich
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Guide to Solid Phase Extraction - Sigma-Aldrich
Bulletin 910T197910 1998 Sigma-Aldrich Phase Extraction (SPE) is an increasingly useful sample preparation technique. With SPE, many of the problems associated withliquid/liquid Extraction can be prevented, such as incomplete Phase separations, less-than-quantitative recoveries, use of expensive,breakable specialty glassware, and disposal of large quantities of organic solvents. SPE is more efficient than liquid/liquid Extraction ,yields quantitative extractions that are easy to perform, is rapid, and can be automated. Solvent use and lab time are is used most often to prepare liquid samples and extract semivolatile or nonvolatile analytes, but also can be used with solidsthat are pre-extracted into solvents. SPE products are excellent for sample Extraction , concentration, and cleanup.
SUPELCO 2 Bulletin 910 SPE tubes that are packed with this material contain stainless steel or Teflon ® frits, required by US Environmental Protection Agency Contract Laboratory Program (CLP) pesticide methods. Highly crosslinked, neutral, specially cleaned styrene-divinylbenzene resin. Very high surface area, mean pore size 110-175Å. Silica-Based Packing – 40µm particles, 60Å pores ...
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