Use of modified TUNGSTEN SELENIDE (cas 12067-46-8) as an adsorbent for gas chromatography

Add time:07/31/2019    Source:sciencedirect.com

TUNGSTEN SELENIDE (cas 12067-46-8) (WSe2) is a crystalline adsorbent with a lamellar structure. In order to remove the residual non-homogeneity of the tungsten selenide surface, samples were subjected to adsorption modification with small amounts of liquid phases of different polarities [poly(ethylene glycol) 1500 and Dexil 300]. The effect of the modifying agent on the adsorption and chromatographic properties of tungsten selenide was studied. It was shown that on application of PEG 1500 in amounts lower than 0.3 mg/m2 the surface of the adsorbent becomes more homogeneous and non-polar. Modifications with Dexil 300 gave no positive results. Columns with tungsten selenide modified with small amounts of PEG 1500 were used in the chromatographic analysis of organic substances.

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