Abstract:In this paper, the determination of niobium, tantalum and lithium in niobium and tantalum ores from Nigeria by Inductively coupled plasma emission spectrometry after hydrofluoric acid-perchloric acid-aqua regia solution sample leaching with Tartaric acid-aqua Regia was studied. The working conditions, such as the analytical spectrum of the elements and the concentration of tartaric acid, were optimized, the best analytical spectrum of each element was selected, and the recovery of each element was discussed by adding standard experiment. NB269.7nm, TA240.0nm and LI670.78 nm were selected as the analytical lines. The detection limits of Nb0.5 μg/g, Ta1.5 μg/g and Li15.0μg/g were calculated. In this paper, a simple and convenient sample pre-treatment method was selected and verified by GBW07153, GBW07155 and GBW07185. The relative error of the determination was-2.82% ～ 1.77% . The precision of the method was 0.11%～1.24% , there is no significant difference in the determination of Nb, Ta and Li in niobium-tantalum lithium ore in Nigeria. This method can be used for accurate determination of related components in niobium-tantalum lithium ore in Nigeria.