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    气相色谱法测定高碳酸盐土壤样品中酸解烃

    GC Determination of Acidolysis Hydrocarbons in High Carbonate Soil Samples

    • 摘要: 采用气相色谱法测定大批量高碳酸盐土壤样品中酸解烃。称取样品10 g,加酸反应35 min后进行脱气,收集的酸解烃气体用HP-PLOT毛细管色谱柱分离,氢火焰离子化检测器检测。方法检出限(3σ)为0.007~0.715 μL·kg-1,测定值的相对标准偏差均小于10%。对由标准气体混合组成的标准样品进行检测,各组分的测定值与认定值之间的相对误差均小于5%。

       

      Abstract: GC method was applied to determine acidolysis hydrecarbond in high carbonate soil samples. 10 g of sample was mixed with acid and was then degassed for 35 min. Acidolysis hydrocarbons were collected, separated by HP-PLOT capillary column, and detected with FID. The detection limits (3σ) were in the range of 0.007-0.715 μL·kg-1 and RSD were all less than 10%. The method was applied to analyze the standard sample consisting of standard gas, with relative error between measured values and certified values less than 5%.

       

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