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Simultaneous determination of methylene blue and new methylene blue by slab optical waveguide spectroscopy and artificial neural networks |
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| Authors: | Li-Xian Sun AMahipal Reddy Akiko Takatsu Tatsuhiro Okada |
| Institution: | a Nanoarchitectonics Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8565, Japan b Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China c National Metrological Laboratory, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8565, Japan d National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8565, Japan |
| Abstract: | A slab optical waveguide (SOWG) has been used for study of adsorption of both methylene blue (MB) and new methylene blue (NMB) in liquid-solid interface. Adsorption characteristics of MB and NMB on both bare SOWG and silanized SOWG by octadecyltrichlorosilane (ODS) were compared. The simultaneous determinations of both MB and NMB were explored by flow injection SOWG spectrophotometric analysis and artificial neural networks (ANNs) for the first time. Concentrations of MB and NMB were estimated simultaneously with the ANNs. Results obtained with SOWG were compared with those got by conventional UV-visible spectrophotometry. |
| Keywords: | Slab optical waveguide Flow injection analysis Methylene blue New methylene blue Artificial neural networks Simultaneous multicomponent determination |
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