在锶(钡) 二溴对甲偶氮甲磺显色体系中,应用 Kohonen神经网络优选波长,用遗传算法优化确定BP神经网络结构和参数,得到优化结构的网络,即 KNN GA BP ANN(29 3 3 2),学习速率η=0.233 3,动量因子α=0.974 7。用优化了的神经网络解析锶、...在锶(钡) 二溴对甲偶氮甲磺显色体系中,应用 Kohonen神经网络优选波长,用遗传算法优化确定BP神经网络结构和参数,得到优化结构的网络,即 KNN GA BP ANN(29 3 3 2),学习速率η=0.233 3,动量因子α=0.974 7。用优化了的神经网络解析锶、钡配合物的混合吸收光谱,不经分离光度法同时测定锶和钡。将BP ANN 、KNN BP ANN与KNN GA BP ANN三种神经网络方法的分析结果进行比较,表明 KNN GA BP ANN最优。锶和钡的配合物的表观摩尔吸光系数分别为εSr635=6.9×104L·mol-1·cm-1,εBa634=8.0×104L·mol-1·cm-1。展开更多
The mechanism of combination of Flow injection(FIA)and double beam of photometry and testing technique,together with the color reaction condition of 2-(4-bromo-2-carboxy phenylazo)-7-(2,4-dimethyl phenylazo)-1,8-dihyd...The mechanism of combination of Flow injection(FIA)and double beam of photometry and testing technique,together with the color reaction condition of 2-(4-bromo-2-carboxy phenylazo)-7-(2,4-dimethyl phenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid reacting with Barium,and the application in the determination of Barium in sinter have been studied.The analyses speed was 130～140 times/h,the Sensitivity was 1.6 times of the ordinary photometric method,the dynamic concentration range of bariumn was 0～1.1μg·mL-1which was in consistent with a Lamber-beer law.The experimental results was satisfactory.展开更多
文摘在锶(钡) 二溴对甲偶氮甲磺显色体系中,应用 Kohonen神经网络优选波长,用遗传算法优化确定BP神经网络结构和参数,得到优化结构的网络,即 KNN GA BP ANN(29 3 3 2),学习速率η=0.233 3,动量因子α=0.974 7。用优化了的神经网络解析锶、钡配合物的混合吸收光谱,不经分离光度法同时测定锶和钡。将BP ANN 、KNN BP ANN与KNN GA BP ANN三种神经网络方法的分析结果进行比较,表明 KNN GA BP ANN最优。锶和钡的配合物的表观摩尔吸光系数分别为εSr635=6.9×104L·mol-1·cm-1,εBa634=8.0×104L·mol-1·cm-1。
文摘The mechanism of combination of Flow injection(FIA)and double beam of photometry and testing technique,together with the color reaction condition of 2-(4-bromo-2-carboxy phenylazo)-7-(2,4-dimethyl phenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid reacting with Barium,and the application in the determination of Barium in sinter have been studied.The analyses speed was 130～140 times/h,the Sensitivity was 1.6 times of the ordinary photometric method,the dynamic concentration range of bariumn was 0～1.1μg·mL-1which was in consistent with a Lamber-beer law.The experimental results was satisfactory.
