Chromatography Technical Note No AS174 Use of SPE and Twister (SBSE) to enrich Heptachlor and Heptachlor epoxide from water with a GC/QTOF in NCI Dan Carrier, Anatune Ltd. Girton, Cambridgeshire (UK) Jeff Stubbs, Anatune Ltd. Girton, Cambridgeshire (UK) John Quick,…
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heptachlor, twister, tdu, epoxide, sbse, stir, gerstel, qtof, enrichment, tray, bar, extraction, focussed, vice, versa