�����ܽ��ʯ��Ʒ���ھ�ʯ������У��õ����ϵ������巢�����׷�(ICP-AES)�ⶨ��Һ�е����㡣�÷���ρ(Nb₂O₅)��ρ(Ta₂O₅)��0��20 μg/mLʱ������ԭ�ӷ������ǿ����Ũ�ȳ����õ�ֱ�߹�ϵ��Nb��Ta��׼�������ϵ���߷ֱ�Ϊ0.999 9��0.999 7������޷ֱ�Ϊ0.023 μg/mL��0.072 μg/mL���������ⶨ��׼��Ʒ���ⶨֵ���϶�ֵ�������ʵ����Ʒ������Nh��Ta����Ա�׼ƫ��(n=6)�ֱ�Ϊ0.42����2.3����1.8����3.3�����ӱ�����ʾ�Ϊ97����103�����ʺϵ����ҿ�ѡұ���������Ʒ���ԡ�

The ore samples were dissolved by mixed acids and then determined the niobium and tantalum in tartaric acid by inductively coupled plasma atomic emission spectrometry(ICP-AES)��The emission spectral intensity of niobium and tantalum showed linear relationship with the concentration when ρ(Nb₂O₅)and ρ(Ta₂O₅) in the range of 0-20 μg/mL and the correlation eoemcients of calibration curve for niobium and tantalum were 0.999 9 and 0.999 7��The detection limits for niobium and tantalum were 0��0230 μg/mL and 0��072 μg/mL. The method was applied to the analysis of standard sample��and the results were consistent with the certified values�� The relative standard deviations(RSD��n=6)were 0.42����2.3��and 1.8����3.3��for niobium and tantalum�� and the recovery rate was 97��~102��to actual samples��The method is suitable for sample test in geological prospecting and metallurgy��