Simultaneous determination of nitrate, chemical oxygen demand and turbidity in water based on UV-Vis absorption spectrometry combined with interval analysis
文献类型:期刊论文
作者 | Chen, Xiaowei1,2; Yin, Gaofang2; Zhao, Nanjing2,3; Gan, Tingting2; Yang, Ruifang2; Xia, Meng1,2; Feng, Chun1,2; Chen, Yunan1,2; Huang, Yao1,2 |
刊名 | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY |
出版日期 | 2021-01-05 |
卷号 | 244 |
ISSN号 | 1386-1425 |
关键词 | UV-Vis spectrum Nitrate COD Turbidity Interval analysis Turbidity compensation COD compensation |
DOI | 10.1016/j.saa.2020.118827 |
通讯作者 | Yin, Gaofang(gfyin@aiofm.ac.cn) ; Zhao, Nanjing(njzhao@aiofm.ac.cn) |
英文摘要 | In this paper, a new method for simultaneous determination of nitrate, COD and turbidity in water based on UV-Vis absorption spectrometry combined with interval analysis was studied. By analyzing the spectral absorption characteristics of nitrate, COD, and turbidity standard solutions and the mixtures of them, the absorption spectra in the range of 225-260 nm, 260-320 nm and 320-700 nm were selected as the characteristic spectra of nitrate, COD and turbidity, respectively. Multiplicative scatter correction was employed to compensate turbidity of the absorption spectra of the mixture solutions in the wavelength range of 225-320 nm. Then, the spectra after turbidity compensation in the range of 225-260 nm was compensated for COD using the method of spectral difference. The original spectra in the range of 320-700 nm, the turbidity compensated spectra in the range of 260-320 nm, and the COD compensated spectra in the range of 225-260 nm were analyzed by PLS algorithm in order to calculate the concentrations of nitrate, COD and turbidity in the mixture solutions. The results showed that this method could simultaneously and accurately determine the concentrations of nitrate, COD and turbidity. After interval analysis, all the correlation coefficients (R-2) between the predicted values and the true values of nitrate, COD and turbidity were higher than 0.9, and root mean square error (RMSE) of predicted values were between 0.696 and 2.337. (C) 2020 Elsevier B.V. All rights reserved. |
WOS关键词 | ORGANIC-MATTER ; ABSORBENCY ; COD |
资助项目 | theNational Key Research and Development Program of China[2017YFF0108402] ; Key Research and Development Plan of Anhui Province[1804a0802192] ; Natural Science Foundation of China[61875254] ; Natural Science Foundation of China[61705237] ; Natural Science Foundation of China[61805254] |
WOS研究方向 | Spectroscopy |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:000587557000012 |
资助机构 | theNational Key Research and Development Program of China ; Key Research and Development Plan of Anhui Province ; Natural Science Foundation of China |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/105176] |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Yin, Gaofang; Zhao, Nanjing |
作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 3.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Xiaowei,Yin, Gaofang,Zhao, Nanjing,et al. Simultaneous determination of nitrate, chemical oxygen demand and turbidity in water based on UV-Vis absorption spectrometry combined with interval analysis[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2021,244. |
APA | Chen, Xiaowei.,Yin, Gaofang.,Zhao, Nanjing.,Gan, Tingting.,Yang, Ruifang.,...&Huang, Yao.(2021).Simultaneous determination of nitrate, chemical oxygen demand and turbidity in water based on UV-Vis absorption spectrometry combined with interval analysis.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,244. |
MLA | Chen, Xiaowei,et al."Simultaneous determination of nitrate, chemical oxygen demand and turbidity in water based on UV-Vis absorption spectrometry combined with interval analysis".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 244(2021). |
入库方式: OAI收割
来源:合肥物质科学研究院
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