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叙述了火焰原子吸收分光光度法（ＦＡＡＳ法）直接测定非水电解液中Ｓｎ、Ｆｅ和Ｃｒ离子浓度的方法。该法采用标准曲线法，直接吸喷样品溶液，并用与电解液介质成分相匹配的乙醇、正丁醇、高氯酸混合基体溶液配制标准液；Ｓｎ、Ｆｅ直接测定，Ｃｒ用标准加入法校准。当采用多点校准曲线时，Ｆｅ、Ｃｒ和Ｓｎ的相关系数分别为０．９９９３、０．９９９８和１．００００。同时，进行了４种合金成分间相互干扰及主要共存元素对被测元素的影响实验以及回收实验。经实验测得Ｓｎ、Ｆｅ、Ｃｒ的测量精密度分别为０．２８％、０．２３％和０．９３％。
A method for the direct determination of Sn, Fe and Cr ion concentrations in nonaqueous electrolytes by flame atomic absorption spectrophotometry (FAAS) is described. The method adopts a standard curve method to directly spray a sample solution and prepare a standard solution by using a mixed base solution of ethanol, n-butanol and perchloric acid matched with a medium component of the electrolyte; and the direct measurement of Sn and Fe and the calibration of Cr by a standard addition method . When using multi-point calibration curve, the correlation coefficients of Fe, Cr and Sn were 0.9993, 0.9998 and 1.0000 respectively. At the same time, four kinds of alloy components were interfered with each other and the influence of main coexisting elements on the tested elements as well as the recovery experiment. The measured precision of Sn, Fe and Cr were 0.28%, 0.23% and 0.93%, respectively.