| 偏最小二乘-神经网络光度法同时测定水中的NO3-和NO2- |
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| 引用本文： | 于洪梅,胡云峰. 偏最小二乘-神经网络光度法同时测定水中的NO3-和NO2-[J]. 化学世界, 2006, 47(3): 139-141 |
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| 作者姓名： | 于洪梅 胡云峰 |
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| 作者单位： | 鞍山科技大学化工学院,辽宁,鞍山,114051;鞍山科技大学化工学院,辽宁,鞍山,114051 |
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| 摘 要： | 应用偏最小二乘-神经网络直接解析硝酸根和亚硝酸根的紫外光谱,不经分离紫外吸光光度法同时测定硝酸根和亚硝酸根。在BP算法上,引用改进的误差传递函数,并采用均匀试验设计法确定了最佳网络运行参数。用于水样中硝酸根和亚硝酸根的同时测定,回收率分别为99.0%,105.0%。
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| 关 键 词： | 偏最小二乘法 神经网络 紫外吸光光度法 硝酸根 亚硝酸根 均匀设计 |
| 文章编号： | 0367-6358（2006）03-139-03 |
| 收稿时间： | 2005-02-24 |
| 修稿时间： | 2005-02-242006-01-09 |
Simultaneous Determination of Nitrate and Nitrite in Water by Neural Network Combined with Partial Least Squares Spectrophotometry |
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| YU Hong-mei,HU Yun-feng. Simultaneous Determination of Nitrate and Nitrite in Water by Neural Network Combined with Partial Least Squares Spectrophotometry[J]. Chemical World, 2006, 47(3): 139-141 |
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| Authors: | YU Hong-mei HU Yun-feng |
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| Affiliation: | School of Chemical Engineering, Anshan University of Science and Technology, Liaoning Anshan 114044, China |
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| Abstract: | A new algorithm of neural network combining with partial least squares method was proposed.The method was applied to simultaneous determination of nitrate and nitrite by ultraviolet spectrophotometry without separation.On the basis of the classic BP algorithm,the error transfer function was improved.The best parameters of network were determined by uniform design.The algorithm was applied to the determination of nitrate and nitrite in water sample with satisfactory results.The mean recoveries are 99.0% and 105.0% for nitrate and nitrite(n=5),respectively. |
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| Keywords: | partial least square neural network ultraviolet spectrophotometry nitrate nitrite uniform design |
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