微波消解⁃ICP⁃AES法测定车用汽油中的重金属元素

Determination of Heavy Metal Elements in Motor Gasoline by Microwave Digestion⁃ICP⁃AES

张嘉席 侯明波 吴限 李丽华

Jiaxi Zhang Mingbo Hou Xian Wu Lihua Li

辽宁石油化工大学 石油化工学院，辽宁 抚顺 113001 中国石油抚顺石化公司，辽宁 抚顺 113004

School of Petrochemical Engineering，Liaoning Petrochemical University，Fushun Liaoning 113001，China PetroChina Fushun Petrochemical Company，Fushun Liaoning 113004，China

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。

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.

辽宁省科技厅大型仪器设备共享服务平台能力建设基金项目(20170006)

10.3969/j.issn.1672-6952.2021.05.005