ENVIRO-CLEAN®
Environmental SPE Column - Inert Extraction Columns
- Polypropylene columns processed for virtually no extractables.
- 3mL and 6mL glass barrels also available.
- Fitted with inert Teflon frits in both polypropylene and glass tubes.
- Packed with UCT premium sorbents.
ENVIRO-CLEAN® solid phase extraction columns are designed especially for the isolation and separation of environmental analytes such as pesticides, herbicides, polyaromatic hydrocarbons, polychlorinated biphenyls and other environmentally related compounds.
ENVIRO-CLEAN® offers a selection of high quality solid phase extraction columns geared to support the environmental chemist with a very broad range of analytical applications. The most important function of the solid phase extraction column for the environmental chemist is the clean separation of an analyte from a variety of compounds. An important function of the extraction column is that it will concentrate a low level of analyte from large samples for accurate analysis. When evaluating analyte extraction or separation, ENVIRO-CLEAN® offers nonpolar, polar, ion-exchange and copolymeric phases for application in the environmental laboratory.
Non-polar phases are often referred to as hydrophobic and function by the interactions of the carbon-hydrogen bond of the analyte and the sorbent. C18 is the most widely used of these phases. EPA approved methods for analyzing organics in drinking water specify the C18 hydrophobic phase. This method requires that large sample volumes (liters) be analyzed which utilizes the compound concentration function of the hydrophobic sorbent.
Polar or hydrophilic phases function by hydrogen bonding, pi-pi and dipoledipole interaction. Ionexchange interactions occur between the sorbent and the analyte of opposite charge. ENVIROCLEAN® sorbents are available in both cation or anion exchangers exhibiting both weak and strong characteristics.
Copolymeric phases offer a new approach to the environmental analyst by providing very clean extracts and high compound recovery. Dual functionalities, hydrophobic plus ion-exchange or polar allow a higher degree of selectivity than was previously possible. Analytes retained by multiple mechanisms can be washed by disrupting only one mechanism. Careful selection of the solvent strength results in a greater removal of chromatographic contamination.
Comparison of UCT Polypropylene Column to Glass Column by GC-MSD.
Figure 1. UCT Polypropylene column with 500 mg of silica.
Polypropylene Columns
- Highest Quality Polypropylene Housing Available
- Special solvent resistant, durable polypropylene
- Low level of extractable contaminants such as plasticizers
*Also available in deactivated and chemically modified formats
Figure 2. Glass column with 500 mg of silica.
* Four milliliters of methanol passed through each column and collected, then evaporated to dryness and reconstituted with 200 µL of methanol.
Inert Glass Syringe Barrel
- Resistant to solvents and aggressive chemicals
- Filter tube with teflon frit
- Packed with a variety bonded phase sorbents