Abstract:

This paper mainly studies a technical method for detecting the metal content in oil, that is, the combination of microwave digestion and ICP?AES detection technology. Studies have shown that the method has good applicability to the elements measured in the sample, and each element has a good linear correlation with its mass concentration, both greater than 0.999, and the detection limits of iron, manganese, and lead are 0.005 0 mg/L, 0.000 3 mg/L, 0.007 0 mg/L. The reliability of the data obtained by the method was verified by the spiked recovery experiment and the precision of the experimental method. The relative standard deviation of each element was less than 2%, and the recoveries were between 94.1% and 107.6%. Compared with the conventional single detection method, the detection method constructed in this paper has the characteristics of high sensitivity, fastness and high precision.

Key words: Microwave digestion, Inductively coupled plasma, Motor gasoline

摘要：

研究一种针对油品内金属含量进行检测的技术方法，即微波消解?ICP?AES检测技术相结合的方式。结果表明，该方法对样品中测量的元素具有很好的适用性，各元素与其质量浓度也有很好的线性相关性，相关系数均为0.999，铁、锰、铅检出限分别为0.005 0、0.000 3、0.007 0 mg/L。通过加标回收实验与实验方法精密度计算，验证了该方法所得数据的可靠性，各元素测定结果的相对标准偏差均小于2%，加标回收率均在94.1%~107.6%。与常规单一的检测方法相比，该检测方法具有灵敏度高、准确、快速且精确度高等特点。

关键词: 微波消解, 电感耦合等离子体, 车用汽油