基于荧光定硫法的汽柴油含硫量不确定评定研究

Study on Uncertainty Evaluation of Sulfur Content of Gasoline and Diesel based on Fluorescence Sulfur Determination Method

为提高汽柴油质量检验的精度,解决汽柴油质检过程中的相关问题,提出一种荧光标定法对汽柴油中含硫情况进行检测。借助荧光标定硫元素的方式提高检测精度,利用不确定度评估法对检测精度进行约束。结果表明:该方法检出限为0.19 mg/kg,其加标回收率可达到97%~108%,证明荧光标定法在汽柴油质量检验中能够发挥较高的检测水平,可以解决汽柴油质量检测中的诸多问题。

In order to improve the accuracy of gasoline and diesel quality inspection and solve the related problems in the process of gasoline and diesel quality inspection, a fluorescence calibration method is proposed to detect the sulfur content in gasoline and diesel. With the help of fluorescence calibration of sulfur, the detection accuracy is improved, and the uncertainty evaluation method is used to restrict the detection accuracy. The results show that the detection limit of this method is 0.19 mg/kg, and the recovery rate can reach 97%~108%. This proves that the fluorescence calibration method can play a high detection level in the quality inspection of gasoline and diesel, and can solve many problems in the quality inspection of gasoline and diesel.