Evaluation and application of serpentine ore in gas chromatography for the separation of higher hydrocarbons in air

Abstract

<span style="mso-bidi-language:HI" lang="EN-GB">Serpentine ore [(Mg, Fe)₃(OH)₄Si₂O₅]<span style="mso-bidi-language:HI" lang="EN-GB">has been evaluated as a stationary phase in gas chromatography for the separation of higher hydrocarbons in air. <span style="mso-bidi-language:HI" lang="EN-GB">Separations of isobutane, N-butane, cyclohexane and air have been studied using temperature programming. A stainless-steel tube of 1.8 m × 2.0 mm size, packed with 60-80 mesh particles of serpentine ore is used as an analytical column. The separated components are detected using a thermal conductivity detector. <span style="mso-ansi-language: EN" lang="EN">Studies reveal that <span style="mso-bidi-language:HI" lang="EN-GB">the separation of isobutane, cyclohexane and air mixture is possible using temperature programming in the range <span style="mso-ansi-language:EN" lang="EN">100-150<span style="font-family:Symbol;mso-ascii-font-family:" times="" new="" roman";mso-hansi-font-family:="" "times="" roman";mso-ansi-language:en;mso-char-type:symbol;mso-symbol-font-family:="" symbol"="" lang="EN">°<span style="mso-ansi-language:EN" lang="EN">C at the rate of 30<span style="font-family:Symbol;mso-ascii-font-family:" times="" new="" roman";mso-hansi-font-family:="" "times="" roman";mso-ansi-language:en;mso-char-type:symbol;mso-symbol-font-family:="" symbol"="" lang="EN">°<span style="mso-ansi-language:EN" lang="EN">C min^-1.<span style="mso-bidi-language:HI" lang="EN-GB"> Isobutane and N-butane could not be separated due to the close retention times. The packed column is successfully applied for the separation of synthetic mixtures<span style="color:black;mso-bidi-language:HI" lang="EN-GB"> of isobutane, cyclohexane and air.<span style="mso-bidi-language: HI" lang="EN-GB">

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