Journal
OPTIK
Volume 125, Issue 1, Pages 183-185Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2013.06.012
Keywords
Thiophanate-methyl; UV absorption spectra; Multiple linear regression; Related coefficient
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Funding
- National Natural Science Foundation of China [31101748, 31271614, 61134011]
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As one worldwide used agent for fungi control in the fruit and vegetable field, thiophanate-methyl has been constituted a significant health risk. To determinate thiophanate-methyl, the method using UV absorption spectra based on multiple liner regression is used. Principal absorption wavelengths related closely with thiophanate-methyl ethanol solution are confirmed through analyzing the absorption spectra of thiophanate-methyl. Utilizing multiple linear regression, mathematical model between absorbance obtained from fourteen absorption wavelengths and thiophanate-methyl concentration is established. The result shows concentrations between the predicted values and measured values are well coincident and the related coefficient is 0.9853 over the concentration range 2-35 ppm. (C) 2013 Elsevier GmbH. All rights reserved.
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