催化裂解-冷原子吸收法测定固体生物质中汞含量

为开展汞的污染监测和环境治理，本文以我国能源用散状固体生物质为研究对象，建立了催化裂解-冷原子吸收测定汞含量方法。通过试验确定了样品称样量、分解温度和分解时间，方法线性关系良好，线性系数>0.999，检出限0.045ug/kg，方法重复性符合要求，标准样品汞含量在标准值不确定度内，经过F检验和t检验，催化裂解-冷原子吸收法与电感耦合等离子体质谱法不存在显著性差异。试验结果表明催化裂解-冷原子吸收法测定汞含量具备良好的精密度和准确度，可应用于固体生物质中汞的检测

Determination of Mercury in Solid Biomass by Catalytic Pyrolysis-Cold Atomic Absorption Spectrometry

In order to monitor and control mercury pollution,?a method for the determination of Mercury by Catalytic cracking-cold Atomic Absorption Spectrometry has been developed in this paper. The weight of the sample, the decomposition temperature and the decomposition time were determined by the test. The linear relationship of the method was good, the linear coefficient >0.999, the detection limit was 0.045 ug/kg. The repeatability of the method met the requirements. The mercury content of the standard sample was within the uncertainty of the standard value, after F test and t test, there was no significant difference between catalytic cracking-cold atomic absorption spectrometry and Inductively coupled plasma mass spectrometry. The results show that the catalytic cracking-cold atomic absorption method has good precision and accuracy, and can be applied to the determination of mercury in solid biomass.