Abstract
An original method is proposed for the preparation of water samples by solid-phase microextraction (SPME) to the determination of hydrocarbon impurities. Substances are eluted with a microamount of an extractant (5 μL per 2 mg of adsorbent) using a centrifuge. Special cartridges are developed for centrifuging. Porapak Q and Tenax TA adsorbents are studied; an optimum solvent is chosen for each adsorbent. The use of SPME with a centrifuge ensures the determination of hydrocarbon impurities in water at the level down to ∼0.3 μg/L.
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