火焰原子吸收光谱法测定硒碲混合物中碲的研究

本文建立了酒石酸-硝酸盐酸混酸溶解样品,在王水-酒石酸介质中,采用空气-乙炔火焰在原子吸收光谱仪上测定硒碲混合物中的碲的方法。本实验研究了样品处理方法、乙炔流量、燃烧高度、灯电流、溶液介质等有关工作条件。实验表明碲浓度在1～20ug/mL范围内与吸光度呈良好的线性关系,回归方程为A=0.0229C 0.0009,相关系数0.9998,检出限0.08ug/mL,本方法适合于硒碲混合物中碲的测定,相对标准偏差为0.9%～1.3%,回收率为98%～102%。

Flame atomic absorption spectrometry determination of seleniumand Tellurium in the mixture of tellurium

This paper studies the tartaric acid nitric acid hydrochloric acid mixed acid to dissolve the sample, in tartaric acid aqua regia medium, with air - acetylene flame in atomic absorption spectrometer mountain determination of selenium and Tellurium in a mixture of tellurium. This paper studies the flow rate of acetylene, flame height, lamp current, solution about working conditions. Experiments show that tellurium concentrations in 1 ~ 20ug / mL range and the absorbance of a good linear relationship, the regression equation was A=0.0229C 0.0009, correlation coefficient is 0.9998, the detection limit of 0.08ug / mL, this method is suitable for determination of tellurium in selenium and tellurium mixture, the relative standard deviation is 0.9% ~ 1.3%, the recovery rate was 98% ~ 102%.