本文提出油样经乳化处理后,用感应耦合高频等离子体发射光谱测定润滑油中的磨损金属铬、铜和铁的分析方法。讨论了乳化剂Triton X-100的用量、及酸度粘度的影响。对乳化法和干灰化法的测定结果进行了比较和讨论。本法使用价廉的水溶液标准。方法快速、准确。相对标准偏差小于2％。 This paper presents an analytical method for the determination of chromium, copper and iron in lubricating oil by inductively coupled high-frequency plasma emission spectrometry after emulsification of the oil sample. The effects of emulsifier Triton X-100 dosage and acidity viscosity were discussed. The results of emulsification and dry ashing were compared and discussed. This method uses inexpensive aqueous solution standards. Method is fast and accurate. The relative standard deviation is less than 2%.