During the past decade, miniaturized and solvent-less sample preparation techniques based on sorptive extraction, e.g. solid phase micro-extraction (SPME), have proven to be simple, fast and environmentally friendly alternatives to LLE while maintaining or even improving sensitivity. In 1999, a new extraction technique known as stir bar sorptive extraction (SBSE) using stir bars coated with 50-300 μl of polydimethylsiloxane (PDMS) was developed by Baltussen et al. [1]. The advantage of SBSE is a higher enrichment factor combined with the application range and extraction mechanism of SPME.

The aim of this paper was to apply SBSE coupled to thermal desorption (TD)-GC-MS to determine ultratrace level (sub-ng/L to ng/L) compounds in aqueous samples.

null
Download PDF

Twister® / Stir Bar Sorptive Extraction (SBSE)

The GERSTEL Twister® enables efficient extraction of organic compounds from aqueous matrices based on Stir Bar Sorptive Extraction (SBSE). SBSE is a solvent-free extraction technique, which is significantly faster than most conventional extraction techniques. SBSE is up to 1000x more sensitive than SPME since the stir bar has significantly more sorbent volume and since it can extract, and concentrate analytes from, a much larger sample volume due to the efficient stirring.

Read more