水浸取-离子色谱法测定固体生物质燃料中氯含量的研究

Research on chlorine content in solid biomass fuel determined by water leaching-ion chromatography

介绍了测定固体生物质中水溶性氯含量的方法——水浸取-离子色谱法,试验了加料量、加热时间和加热温度对测定结果的影响。研究结果表明,水浸取可溶性氯的最佳条件是固体生物质燃料与水的比为1 g/50mL,在110~120℃下加热40 min。进行了方法重复性和加标回收率试验,对比了XRF法半定量直接分析的结果。试验结果表明,水浸取-离子色谱法操作简单、重复性好、准确度高,能满足固体生物质燃料中氯离子含量的测试要求。

Research on the water-soluble chlorine content in solid biomass fuel determined by water leaching-ion chromatography was introduced. The effect of charging amount, heating time and heating temperature on the determination results were investigated. The results showed that the optimum ex- traction conditions of water-soluble chlorine content were obtained with the ratio of solid biomass fuel and water was 1 g/50 mL （s/l）, heating time was 40 rain at 110--120 ℃.The repeatability and recovery tests were conducted. Compared to the result using X-ray fluorescence spectrometry, the water leaching-ion chromatography method was more simple, better reproducibility and higher accuracy. It could meet the test requirements of water-soluble chlorine content in solid biomass fuel.