【摘要】 本文提出了用4,5-二溴苯基荧光酮和CTMAB荧光猝灭法测定微量钽高灵敏度的分析方法,激发波长和发射波长分别为400nm和510nm,当Ta₂O₅的含量在0～8μg/25ml范围内,线性关系良好.直线回归方程为:y=100-4.05x,线性相关系数r=0.9995,对8份样品平行测定,相对标准偏差为4%,用本法测定样品中的微量钽,结果满意更多还原

【Abstract】 A highly sensitive fluorescence quenching method has been developed for the determination of tantalum with 4,5-dibromophenylfluarone and CTMAB, the excitation and emissio’n wavelength are 400dm and 510nm, respectively. The linear relationship is obeyed in the concentration range 0-8ug/25ml for Ta2O5. The relative standard deviation based on 8 determinations is 4%. This method can be used to determine Ta in ore samples with satisfactory results.更多还原