电感耦合等离子体质谱法测定固体生物质燃料中重金属

为开展重金属监测及环境保护，本文建立了电感耦合等离子体质谱法测定固体生物质燃料中重金属方法。对样品全消解酸溶法进行了实验研究，确定了微波消解酸体系和微波消解程序。采用Ge和In作为内标元素消除仪器干扰，方法线性关系良好，线性系数>0.999，检出限为0.001～0.089mg/kg。采用标准物质对方法准确性和稳定性进行验证，各元素测定值均在标准证书值范围内，相对标准偏差在0.36%～3.96%，Hg的加标平均回收率为104.7%。通过3家实验室协同实验验证了方法准确性，并给出了方法精密度。

Determination of heavy metals in solid biomass fuel by inductively coupled plasma mass spectrometry

In order to carry out heavy metal monitoring and environmental protection, a method for the determination of heavy metals in solid biomass fuel by inductively coupled plasma mass spectrometry was established. The acid digestion method of total digestion of samples was experimentally studied, and the microwave digestion acid system and microwave digestion procedure were determined. Ge and in are used as internal standard elements to eliminate instrument interference. The linear relationship of the method is good, the linear coefficient is > 0.999, and the detection limit is 0.001 ~ 0.089mg/kg. The accuracy and stability of the method were verified by reference materials. The measured values of each element were within the range of the standard certificate, the relative standard deviation was 0.36% ~ 3.96%, and the average recovery of Hg was 104.7%. The accuracy of the method was verified by collaborative experiments in three laboratories, and the precision of the method was given. The method can be applied to the determination of heavy metals in biomass fuels in the field of biomass energy.