Simultaneous Determination of Volatile Chlorinated Hydrocarbons by Dual Detection using a Semi-Wide Bore Capillary Column

概要

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Headspace analysis was employed for the simple and rapid simultaneous gas chromatographic determination of volatile chlorinated hydrocarbons (VCH) in drinking water by dual detection using a semi-wide bore capiliary column (0.32 mm i.d.). For dual detection, an electron capture detector (ECD) and a flame ionization detector (FID), were employed in combination to attain the simultaneous determination at a low parts-perbillion level of 15 kinds of VCH with a single injection. After the equilibration time of 1 h, when 0.5 ml of headspace gas was injected into the gas chromatograph with a splitless injection (0.5 min), the capillary column permitted satisfactory separations for all target compounds without interference by trihalomethane. The sensitivity of detecting cis- and trans-1,2-dichloroethylene using the FID was about 3-6 fold higher than that using the ECD with the detection limits of 1.0 and 0.7 ppb, respectively. The detection limits of the other VCH were 0.005 (carbon tetrachloride and 1,1,1-trichloroethane)-0.7 ppb (1,2-dichloroethane) using the ECD, which shows a high sensitivity. The coefficients of variation were 3.2-8.8% with good precision and reproducibility.
公益社団法人日本薬学会の論文
1991-10-31