| 近红外光谱法测定PDA中残留丙烯酰胺含量 |
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| 作者姓名： | Zheng HL Zhang P Zhu GC Zhu CJ Wang JJ Jiang SJ Yu BH |
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| 作者单位： | 1. 重庆大学三峡库区生态坏境教育部重点实验室,重庆,400045
2. 天津化工研究设计院,天津,300131 |
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| 基金项目： | 国家自然科学基金项目(51078366); 国家水体污染控制与治理科技重大专项(2009ZX07424-004); 教育部高等学校科技创新工程重大项目培育资金项目(708071)资助 |
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| 摘 要： | 选取38份实验室自制二甲基二烯丙基氯化铵与丙烯酰胺的共聚物(PDA)为样品,用紫外光谱法对PDA中残留丙烯酰胺(AM)含量进行测定,并进行近红外光谱扫描,在图谱中选取七个波段,将每个波段的特征峰作为自变量,吸收峰作为因变量,采用偏最小二乘法(PLS)的数学转换方法建立近红外反射光谱(NIRS)定标模型,采用小波分析对光谱进行降噪处理,建立PDA中残留AM含量的近红外预测模型,并将预测值与紫外光谱法测定值进行比较,其外部验证决定系数达到0.99,预测分布趋势良好,对预测值与实测值进行t检验,结果显示预测值与实测值差异不显著。试验结果表明,采用近红外光谱数据建立的定标模型预测PDA中残留AM单体含量具有较高可行性。
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| 关 键 词： | PDA 残留丙烯酰胺 近红外光谱 小波分析 偏最小二乘法 |
Determination of acrylamide in PDA with near infrared reflectance spectroscopy |
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| Zheng HL,Zhang P,Zhu GC,Zhu CJ,Wang JJ,Jiang SJ,Yu BH.Determination of acrylamide in PDA with near infrared reflectance spectroscopy[J].Spectroscopy and Spectral Analysis,2011,31(11):2944-2947. |
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| Authors: | Zheng Huai-Li Zhang Peng Zhu Guo-Cheng Zhu Chuan-Jun Wang Jing-Jing Jiang Shao-Jie Yu Bing-Hong |
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| Institution: | ZHENG Huai-li1,ZHANG Peng1,ZHU Guo-cheng1,ZHU Chuan-jun2,WANG Jing-jing1,JIANG Shao-jie1,YU Bing-hong1 1.Key Laboratory of the Three Gorges Reservoir Region Eco-Environment,Ministry of Education,Chongqing University,Chongqing 400045,China 2.Tianjin Chemical Research and Design Institute,Tianjin 300131,China |
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| Abstract: | In the present study,near infrared reflectance spectroscopy(NIRS) was used as a rapid and accurate method to determine the residual of acrylamide monomer in the product of diallyl dimethyl ammonium chloride and acrylamide.In this experiment 38 products were used which were self-prepared in the laboratory,then near infrared spectra of the product were scanned,seven bands were selected,the characteristic peaks of each band were used as the independent variables,and the absorption peak was used as the dependen... |
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| Keywords: | PDA Content of residual acrylamide Near infrared reflectance spectroscopy Wavelet analysis Partial least squares(PLS) |
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