水体中污染物质在受到光激发时,不仅发出荧光,而且对荧光具有吸收作用,因此在应用荧光光谱定量分析水体多种污染成分时,导致分析结果不够准确.结合三维荧光光谱技术和PARAFAC算法,提出了一种用于多组分分析的非线性浓度校准模型,通过标样数据估计物质之间对荧光的吸收校准参数,应用于浓度反演中.实验结果表明,运用这种非线性的浓度校准模型可以改善多组分分析的性能,提高分析精度.
参考文献
| [1] | Wang Zhigang,Liu Wenqing,Li Hongbin,et al.Analysis of CDOM spatial distributions variations in Chaohu Lake and its sources by three dimensional fluorescence excitation-emission matrix[J].Acta Scientiae Circumstantiae(环境科学学报),2006,26(2):275-279 (in Chinese). |
| [2] | Stedmon C A,Markager S.Resolving the variability in dissolved organic matter fluorescence in a temperate estuary and its catchment using PARAFAC analysis[J].Limnol.Oceanogr.,2005,50:686-697. |
| [3] | Cory R M,McKnight D M.Fluorescence spectroscopy reveals ubiquitous presence of oxidized and reduced quinones in dissolved organic matter[J].Environ.Sci.Technol.,2005,39:8142-8149. |
| [4] | Caroll J D,Chang J.Analysis of individual differences in multidimensional scaling via an N-way generalisation of and Eckart-Young decomposition[J].Psychometrika,1970,35:283. |
| [5] | Harshman R A.Foundations of the PARAFAC procedure:model and conditions for an explanatory multi-mode factor analysis[J].UCLA Working Papers in Phonetics,1970,16. |
| [6] | Cattell R B."Parallel proportional profiles " and other principles for determining the choice of factors by rotation[J].Psychometrika,1944,9:267. |
| [7] | Yates F.The analysis of replicated experiments when the field results are incomplete[J].The Empire Journal of Experimental Agriculture,1933,1:129. |
| [8] | Dennis J E.Nonlinear least-squares[C].State of the Art in Numerical Analysis[M].ed.D.Jacobs,Academic Press,1977.269-312. |
| [9] | Coleman T F,Li Y.On the convergence of reflective newton methods for large-scale nonlinear minimization subject to bounds[J].Mathematical Programming,1994,67(2):89-224. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%