A compact optical instrument with artificial neural network for pH determination

Sensors (Switzerland)

Volumn 12, Issue 5, 2012, Pages 6746-6763

  Capel Cuevas, Sonia ^a   López Ruiz, Nuria ^a   Martinez Olmos, Antonio ^a   Cuéllar, Manuel P ^b   del Carmen Pegalajar, Maria ^b   Palma, Alberto José ^a   de Orbe Payá, Ignacio ^a   Capitán Vallvey, Luis Fermin ^a  

^a UNIVERSITY OF GRANADA   (Spain)

^b UNIVERSITY OF GRANADA   (Spain)

Author keywords

H coordinate; HSV colour space; Neural networks; PH sensor array; Portable instrument

Indexed keywords

EID: 84861536022     PISSN: 14248220     EISSN: None     Source Type: Journal    
DOI: 10.3390/s120506746     Document Type: Article

References (18)

1. Deboux, B.J.; Lewis, E.; Scully, P.J.; Edwards, R. A novel technique for optical fiber pH sensing based on methylene blue adsorption. J. Lightwave Technol. 1995, 13, 1407-1414.
2. Shakhsher, Z.M.; Odeh, I.; Jabr, S.; Rudolf Seitz, W. An optical chemical sensor based on swellable dicarboxylate functionalized polymer microspheres for pH, copper and calcium determination. Microchim. Acta 2004, 144, 147-153.
3. Heng, L.Y.; Fang, T.H.; Chern, L.H.; Ahmad, M. Influence of methacrylic-acrylic copolymer composition on plasticiser-free optode films for pH sensors. Sensors 2003, 3, 83-90.
4. Abbaspour, A.; Mehrgardi, M.A.; Noori, A.; Kamyabi, M.A.; Khalafi-Nezhad, A.; Soltani Rad, M.N. Speciation of iron(II), iron(III) and full-range pH monitoring using paptode: A simple colorimetric method as an appropriate alternative for optodes. Sens. Actuat. B 2006, 113, 857-865.
5. Lapresta-Fernández, A.; Capitán-Vallvey, L.F. Environmental monitoring using a conventional photographic digital camera for multianalyte disposable optical sensors. Anal. Chim. Acta 2011, 706, 328-337.
6. Safavi, A.; Maleki, N.; Rostamzadeh, A.; Maesum, S. CCD camera full range pH sensor array. Talanta 2007, 71, 498-501.
7. Suzuki, M.; Nakabayashi, H.; Honda, M.; Iribe, Y. Micro-arrayed optical chemical sensor chips. Chemical Sensors 2004, 20, 76-78.
8. Haykin, S. Neural Networks: A Comprehensive Foundation; Prentice Hall: Upper Saddle River, NJ, USA, 1999.
9. Bengio, Y.; Simard, P.; Frasconi, P. Learning long-term dependencies with gradient descent is difficult. IEEE Trans. Neural Networks 1994, 5, 157-166.
10. Taib, M.N.; Andres, R.; Narayanaswamy, R. Extending the response range of an optical fibre pH sensor using an artificial neural network. Anal. Chim. Acta 1996, 330, 31-40.
11. Safavi, A.; Bagheri, M. Novel optical pH sensor for high and low pH values. Sens. Actuat. B 2003, 90, 143-150.
12. Capel-Cuevas, S.; Cuéllar, M.P.; de Orbe-Payá, I.; Pegalajar, M.C.; Capitán-Vallvey, L.F. Full-range optical pH sensor based on imaging techniques. Anal. Chim. Acta 2010, 681, 71-81.
13. Capel-Cuevas, S.; Cuéllar, M.P.; de Orbe-Payá, I.; Pegalajar, M.C.; Capitán-Vallvey, L.F. Full-range optical pH sensor array based on neural networks. Microchem. J. 2011, 97, 225-233.
14. Martinez-Olmos, A.; Capel-Cuevas, S.; López-Ruiz, N.; Palma, A.J.; de Orbe, I.; Capitán-Vallvey, L.F. Sensor array-based optical portable instrument for determination of pH. Sens. Actuat. B 2011, 156, 840-848.
15. Fernandez-Ramos, M.D.; Greluk, M.; Palma, A.J.; Arroyo-Guerrero, E.; Gomez-Sanchez, J.; Capitan-Vallvey, L.F. The use of one-shot sensors with a dedicated portable electronic radiometer for nitrate measurements in aqueous solutions. Meas. Sci. Technol. 2008, 19, 095204-1-095204/7.
16. Cuéllar, M.P.; Capel-Cuevas, S.; Pegalajar, M.C.; de Orbe-Payá, I.; Capitán-Vallvey, L.F. Minimization of sensing elements for full-range optical pH device formulation. New J. Chem. 2011, 35, 1042-1053.
17. Abbass, H.A. A memetic Pareto evolutionary approach to artificial neural networks. Lect. Note. Artif. Intell. 2001, 2256, 1-12.
18. Cantrell, K.; Erenas, M.M.; Orbe-Payá, I.; Capitán-Vallvey, L.F. Use of the hue parameter of the hue, saturation, value color space as a quantitative analytical parameter for bitonal optical sensors. Anal. Chem. 2010, 82, 531-542.