摘要
在酸性介质中,硒(Ⅳ)和铁(Ⅲ)同时催化H_2O_2氧化二甲基黄褪色反应.研究发现:两者对H_2O_2氧化二甲基黄褪色反应的催化作用不具有加和性.根据这一现象,结合人工神经网络,建立了一种新的不经分离可同时测定硒(Ⅳ)和铁(Ⅲ)混合物中硒(Ⅳ)和铁(Ⅲ)各自含量的分析方法.方法应用于合成样品及烟草样品中硒(Ⅳ)和铁(Ⅲ)的测定,结果满意.
Selenium(IV)and iron(III)can catalyze the oxidation of dimethyl yellow discoloration reaction by hydrogen peroxide under acidic conditions.It also found that the catalytic effects of the two ions have no additive properties.Based on this research,the advantages of artificial neural network were adopted to handle the experimental data and a new catalytic kinetic spectrophotometric method for the simultaneous determination of selenium(IV)and iron(III)with artificial neural network was established.The best reaction conditions were discussed and the structure of the neural networks was optimized.The recovery were between95%~105%of the determination in synthetic samples and the results showed that the method is sensitive,accurate and suitable for the determination of selenium and iron in tobacco samples.
作者
傅应强
方佳佳
严谨
马森
唐定兴
FU Ying-qiang;FANG Jia-jia;YAN Jin;MA Sen;TANG Ding-xing(School of Biology and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui China)
出处
《分析测试技术与仪器》
CAS
2017年第4期201-207,共7页
Analysis and Testing Technology and Instruments
基金
国家自然科学基金项目(21406001)
国家级大学生创新创业训练计划(201510363057)
安徽省大学生创新创业训练计划(AH201510363057)资助
关键词
人工神经网络
硒
铁
催化动力学光度法
artificial neural network
selenium
iron
catalytic kinetic spectrophotometry
