红外光谱法测定生物质燃料中全硫的研究

建立红外光谱法测定生物质燃料中全硫含量的方法,采用标准样品校正仪器,拟合校正曲线,研究了该方法的准确度和精密度。结果表明,全硫含量在0%~4.45%范围内,测量值和实际值硫含量线性关系良好,用标准加入法进行回收率实验对方法的准确度进行考察,相对标准偏差为0.76%~1.52%,加标回收率为99.44%~99.89%。与其他检测方法比较,该方法操作简单,检测时间短,自动化程度高。

Determination of Total Sulfur in Biomass Fuels by Infrared Spectroscopy

The method for the determination of total sulfur in biomass fuels by infrared spectroscopy was established. The calibration curve was fitted by standard sample calibration instrument. The accuracy and precision of the method were studied. The results showed that the linear correlation between measured sulfur content and actual sulfur content was good in the range of 0%~4.45%, and the recoveries were tested by the standard addition method. The relative standard deviations were 0.76%~1.52% and the recoveries were in the range of 99.44% ~ 99.89%. Compared with other detection methods, the method has the advantages of simple operation, short detection time and high degree of automation.