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《化学分析计量》 2019年第02期
DOI:10.3969/j.issn.1008-6145.2019.02.020
微波消解-电感耦合等离子体发射光谱法测定固体生物质燃料中8 种元素
吴志鹏,肖伟,关雎,秦平,曾建浩
广州能源检测研究院,广州 511447 
Determination of 8 elements in solid biomass fuels by microwave digestion-ICP-OES
WU Zhipeng. XIAO Wei, GUAN Ju, Qin Ping, Zeng Jianhao
Guangzhou Institute of Energy Testing, Guangzhou 511447, China 
摘要: 建立电感耦合等离子体发射光谱法同时测定固体生物质燃料中钾、钠、钙、镁、砷、铜、铁、锰8 种元素的含 量。样品采用5 mL 硝酸溶液和2 mL 过氧化氢溶液进行微波消解,在选定的仪器工作条件下进行测定。钠、钙、镁、砷、 铜、铁、锰的质量浓度在0~5.0 mg/L,钾的质量浓度在0~50.0 mg/L 范围内与光谱强度具有良好的线性关系,相关 系数均大于0.999,方法检出限为0.002~0.022 mg/L。样品的加标回收率为91.9%~108.2%,测定结果的相对标准偏 差为2.1%~6.8%(n=6)。该方法简便、快速、高效且准确,适用于固体生物质燃料中钾、钠、钙、镁、砷、铜、铁、锰的测定。  
Abstract:A method for the simultaneous determination of eight elements, such as potassium, sodium, calcium, magnesium, arsenic, copper, iron and manganese, in solid biomass fuels by inductively coupled plasma optica emission spectrometry(ICP-OES) was established. The samples were digested with 5 mL nitric acid solution and 2 mL hydrogen peroxide solution under microwave irradiation and determined under the selected working conditions of the instrument. The mass concentration(sodium, calcium, magnesium, arsenic, copper, iron and manganese was 0-5.0 mg/L, and the mass concentration of potassium was 0-50.0 mg/L) had good linear relationship with spectral intensity, the linear correlation coefficients were more than 0.999, and the detection limits of the method were 0.002-0.022 mg/L. The recoveries of the samples were 91.9%-108.2%. The relative standard deviations of the results were 2.1%-6.8%(n=6). The method is simple, rapid, efficient and accurate. It is suitable for the determination of potassium, sodium, calcium, magnesium, arsenic, copper, iron and manganese in solid biomass fuels. 
关键词:微波消解;电感耦合等离子体发射光谱法;固体生物质燃料;钾;钠;钙;镁;砷;铜;铁;锰 
Keywords:microwave digestion; ICP-OES; solid biomass fuels; potassium; sodium;calcium; magnesium; arsenic;copper; iron; manganese 
基金:广州市质量技术监督局科技项目(2017kj32) 
本文引用格式:
吴志鹏,肖伟,关雎,等. 微波消解- 电感耦合等离子体发射光谱法测定固体生物质燃料中8 种元素[J]. 化学分析计量,2019,28(2):83-88.
WU Z P,XIAO W,GUAN J,et al. Determination of 8 elements in solid biomass fuels by microwave digestion-ICP-OES[J]. Chemical analysis and meterage,2019,28(2):83-88. 

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