Determination of Thiodiglycol in Groundwater Using Solid Phase Extraction Followed by Gas Chromatography with Mass Spectrometric Detection in the Selected Ion Mode
Abstract
A highly-sensitive analytical procedure is described for determining thiodiglycol in groundwater. Samples are initially fortified with 3,3 -thiodipropanol (surrogate), then both species are extracted using sequential solid phase extraction with C18 and Ambersorb 572 columns in tandem. The C18 column, which removes extraneous groundwater components, is discarded; the Ambersorb 572 column is dried thoroughly before eluting polar components with a small volume of dichloromethane. The extract is taken to dryness using dry flowing nitrogen, and the resulting residue is derivatized using MTBSTFA and pyridine. The derivatized products are diluted to a final volume with toluene, chromatographed using a fused-silica capillary column, and detected with a quadrupole mass spectrometric detector in its selectedion mode. Two independent statistically unbiased procedures were used to evaluate the detection limits for thiodiglycol; the values ranged between 4 and 16 mg L-1 groundwater.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2002
- Accession Number
- ADA436090
Entities
People
- Bruce A. Tomkins
- Gary A. Sega
Organizations
- Oak Ridge National Laboratory