原子吸收光谱应用有机金属标准物质测定润滑油中的铁和镍

DETERMINATION OF Fe AND Ni CONTENTS IN LUBRICATING OIL BY ATOMIC ABSORPTION SPECTROSCOPY USING ORGANO METALLIC STANDARD REFERENCES

叙述了应用原子吸收光谱有机金属标准物质直接测定润滑油中磨损金属铁、镍含量的方法。使用自制的有机铁和有机镍作分析标准物质，其稳定性可保持１年。该方法省去了灰化、酸溶等繁琐步骤，不但操作简便，而且灵敏度较高。铁和镍的特征质量浓度分别为０．０４８ｍｇ／Ｌ和０．０４４ｍｇ／Ｌ；精密度分别为０．９２％和１．５２％

Direct determination of Fe and Ni in used lubricating oil by atomic absorption spectroscopy using organo metallic standard references is presented. The organo metallic standard compounds of iron and nickel were formulated and their stabilities were tested. The test result showed that the stabilities can be maintained 1 year. The proposed method was not only simple in handling without the steps of ashing and acid treatment, but also possessed high sensitivity. The characteristic concentrations of Fe and Ni were 0.048 mg/L and 0.044 mg/L respectively, and their testing relative standard deviations were 0.92 % and 1.52% respectively.