Electronic noses for environmental monitoring applications

Sensors (Switzerland)

Volumn 14, Issue 11, 2014, Pages 19979-20007

  Capelli, Laura ^a   Sironi, Selena ^a   Del Rosso, Renato ^a  

^a POLITECNICO DI MILANO   (Italy)

Author keywords

Chemical analysis; Classification; Discrimination; Dynamic olfactometry; Environment; Odor; Odor concentration; Quantification; Sensors; Training

Indexed keywords

CHEMICAL ANALYSIS; CLASSIFICATION (OF INFORMATION); CONTROL SYSTEM ANALYSIS; DATA HANDLING; DEGREES OF FREEDOM (MECHANICS); ELECTRONIC EQUIPMENT; ENVIRONMENTAL ENGINEERING; ENVIRONMENTAL REGULATIONS; ODOR CONTROL; ODORS; PERSONNEL TRAINING; SENSORS;

DISCRIMINATION; DYNAMIC OLFACTOMETRY; ENVIRONMENT; ODOR CONCENTRATIONS; QUANTIFICATION;

QUALITY CONTROL;

EID: 84908518203     PISSN: 14248220     EISSN: None     Source Type: Journal    
DOI: 10.3390/s141119979     Document Type: Review

References (123)

1. Persaud, K.; Dodd, G. Analysis of discrimination mechanisms in the mammalian olfactory system using a model nose. Nature 1982, 299, 352-355.
2. Gardner, J.W.; Bartlett, P.N. Electronic Noses: Principles and Applications; Oxford University Press: New York, NY, USA, 1999.
3. D'Amico, A.; di Natale, C.; Paolesse, R.; Macagnano, A.; Martinelli, E.; Pennazza, G.; Santonico, M.; Bernabei, M.; Roscioni, C.; Galluccio, G.; et al. Olfactory systems for medical applications. Sens. Actuators B Chem. 2008, 1, 458-465.
4. Casalinuovo, I.A.; di Pierro, D.; Coletta, M.; di Francesco, P. Application of electronic noses for disease diagnosis and food spoilage detection. Sensors 2006, 6, 1428-1439.
5. Persaud, K.C. Medical applications of odor-sensing devices. Int. J. Low. Extrem. Wounds 2005, 4, 50-56.
6. Peris, M.; Escuder-Gilabert, L. A 21st century technique for food control: Electronic noses. Anal. Chim. Acta 2009, 638, 1-15.
7. Ampuero, S.; Bosset, J.O. The electronic nose applied to dairy products: A review. Sens. Actuators B Chem. 2003, 94, 1-12.
8. Schaller, E.; Bosset, J.O.; Escher, F. "Electronic noses" and their application to food. Food Sci. Technol. 1998, 31, 305-316.
9. Dubreuil, B.; Bonnefille, M.; Neitz, S.; Talou, T. Prospective Experiments of e-Nose for Cosmetics Applications: Recognition of Sweat Odors. In Artificial Chemical Sensing: Olfaction and the Electronic Nose (ISOEN 2001): Proceedings of the Eighth International Symposium; The Electrochemical Society: New York, NY, USA, 2001.
10. Hodgins, D. The development of an electronic nose for industrial and environmental applications. Sens. Actuators B Chem. 1995, 27, 255-258.
11. 2S analysis and olfactometry. Water Res. 1999, 33, 453-461.
12. Dewettinck, T.; van Hege, K.; Verstraete, W. The electronic nose as a rapid sensor for volatile compounds in treated domestic wastewater. Water Res. 2001, 35, 2475-2483.
13. Fernández, M.J.; Fontecha, J.L.; Sayago, I.; Aleixandre, M.; Lozano, J.; Gutiérrez, J.; Gràcia, I.; Cané, C.; del Carmen Horrillo, M. Discrimination of volatile compounds through an electronic nose based on ZnO SAW sensors. Sens. Actuators B Chem. 2007, 127, 277-283.
14. Nakamoto, T.; Sumitimo, E. Study of robust odor sensing system with auto-sensitivity control. Sens. Actuators B Chem. 2003, 89, 285-291.
15. Stuetz, R.M.; Nicolas, J. Sensor arrays: An inspired idea or an objective measurement of environmental odours? Water Sci. Technol. 2001, 44, 53-58.
16. Mumyakmaz, B.; Ozmen, A.; Ebeoglu, M.A.; Tasaltin, C.; Gurol, I. A study on the development of a compensation method for humidity effect in QCM sensor responses. Sens. Actuators B Chem. 2010, 147, 277-282.
17. Romain, A.C.; Nicolas, J. Long term stability of metal oxide-based gas sensors for e-nose environmental applications: An overview. Sens. Actuators B Chem. 2010, 146, 502-506.
18. Harper, W.J. The Strengths and Weaknesses of the Electronic Nose. In Headspace Analysis of Foods and Flavors: Theory and Practice; Rouseff, R.L., Cadwallader, K.R., Eds.; Springer US: New York, NY, USA, 2001; pp. 59-71.
19. Bourgeois, W.; Romain, A.C.; Nicolas, J.; Stuetz, R.M. The use of sensor arrays for environmental monitoring: Interests and limitations. J. Environ. Monitor. 2003, 5, 852-860.
20. Winquist, F.; Lundstrom, I.; Wide, P. The combination of an electronic tongue and an electronic nose. Sens. Actuators B Chem. 1999, 58, 512-517.
21. Krantz-Rulcker, C.; Stenberg, M.; Winquist, F.; Lundstrom, I. Electronic tongues for environmental monitoring based on sensor arrays and pattern recognition: A review. Anal. Chim. Acta 2001, 426, 217-226.
22. Men, H.; Zou, S.F.; Li, Y.; Wang, Y.P.; Ye, X.S.; Wang, P. A novel electronic tongue combined MLAPS with stripping voltammetry for environmental detection. Sens. Actuators B Chem. 2005, 110, 350-357.
23. Mimendia, A.; Gutiérrez, J.M.; Leija, L.; Hernández, P.R.; Favari, L.; Muñoz, R.; del Valle, M. A review of the use of the potentiometric electronic tongue in the monitoring of environmental systems. Environ. Model. Softw. 2010, 25, 1023-1030.
24. Riul, A., Jr.; Dantas, C.A.R.; Miyazaki, C.M.; Oliveira, O.N., Jr. Recent advances in electronic tongues. Analyst 2010, 135, 2481-2495.
25. Kundu, P.K.; Chatterjee, A.; Panchariya, P.C. Electronic Tongue System for Water Sample Authentication: A Slantlet-Transform-Based Approach. IEEE Trans. Instrum. Meas. 2011, 60, 1959-1966.
26. Stuetz, R.M.; Fenner, R.A.; Engin, G. Characterisation of wastewater using an electronic nose. Water Res. 1999, 33, 442-452.
27. Abbas, M.N.; Moustafa, G.A.; Gopel, T.V. Multicomponent analysis of some environmentally important gases using semiconductor tin oxide sensors. Anal. Chim. Acta 2001, 431, 181-194.
28. 2 gaseous components in different reference atmospheres using a metal oxide sensor array. Sens. Actuators B Chem. 2004, 103, 403-408.
29. Ozmen, A.; Dogan, E. Design of a Portable E-Nose Instrument for Gas Classifications. IEEE Trans. Instrum. Meas. 2009, 58, 3609-3618.
30. Figueiredo, S.; Stentiford, E. Evaluating the potential of an electronic nose for detecting the onset of anaerobic conditions during composting. Bioprocess Solid Waste Sludge 2002, 2, 1-7.
31. Romain, A.C.; Godefroid, D.; Kuske, M.; Nicolas, J. Monitoring the exhaust air of a compost pile as a process variable with an e-nose. Sens. Actuators B Chem. 2005, 106, 29-35.
32. Littarru, P. Environmental odours assessment from waste treatment plants: Dynamic olfactometry in combination with sensorial analysers "electronic noses". Waste Manag. 2007, 27, 302-309.
33. Micone, P.G.; Guy, C. Odour quantification by a sensor array: An application to landfill gas odours from two different municipal waste treatment works. Sens. Actuators B Chem. 2007, 120, 628-637.
34. CEN. EN 13725:2003. Air Quality-Determination of Odour Concentration by Dynamic Olfactometry; Comitée Européen de Normalisation: Brussels, Belgium, 2007.
35. Sohn, J.H.; Pioggia, G.; Craig, I.P.; Stuetz, R.M.; Atzeni, M.G. Identifying major contributing sources to odour annoyance using a non-specific gas sensor array. Biosyst. Eng. 2009, 102, 305-312.
36. Pearce, T.C.; Schiffman, S.S.; Nagle, H.T.; Gardner, J.W. Handbook of Machine Olfaction: Electronic Nose Technology; Wiley-VCH Verlag GmbH & Co.: Weinheim, Germany, 2003.
37. Röck, F.; Barsan, N.; Weimar, U. Electronic Nose: Current Status and Future Trends. Chem. Rev. 2008, 108, 705-725.
38. Gardner, J.W.; Bartlett, P.N. A brief-history of electronic noses. Sens. Actuators B Chem. 1994, 18, 211-220.
39. Kermani, B.G.; Schiffman, S.S.; Nagle, H.T. Performance of the Levenberg-Marquardt neural network training method in electronic nose applications. Sens. Actuators B Chem. 2005, 110, 13-22.
40. Capelli, L.; Sironi, S.; Centola, P.; del Rosso R.; Il Grande, M. Electronic noses for the continuous monitoring of odours from a wastewater treatment plant at specific receptors: Focus on training methods. Sens. Actuators B Chem. 2008, 131, 53-62.
41. Sironi, S.; Capelli, L.; Centola, P.; del Rosso, R.; Il Grande, M. Continuous monitoring of odours from a composting plant using electronic noses. Waste Manag. 2007, 27, 389-397.
42. Fuchs, S.; Strobel, P.; Siadat, M.; Lumbreras, M. Evaluation of unpleasant odor with a portable electronic nose. Mater. Sci. Eng. 2008, 28, 949-953.
43. Bourgeois, W.; Gardey, G.; Servieres, M.; Stuetz, R.M. A chemical sensor array based system for protecting wastewater treatment plants. Sens. Actuators B Chem. 2003, 91, 109-116.
44. Bastos, A.C.; Magan, N. Potential of an electronic nose for the early detection and differentiation between Streptomyces in potable water. Sens. Actuators B Chem. 2006, 116, 151-155.
45. Capelli, L.; Sironi, S.; Barczak, R.; Il Grande, M.; del Rosso, R. Validation of a method for odor sampling on solid area sources. Water Sci. Technol. 2012, 66, 1607-1613.
46. Hudson, N.; Ayoko, G.A. Odour sampling. 2. Comparison of physical and aerodynamic characteristics of sampling devices: A review. Bioresour. Technol. 2008, 99, 3993-4007.
47. Pearce, T.C. Computational parallels between the biological olfactory pathway and its analogue "The Electronic Nose": Part II. Sensor-based machine olfaction. Biosystems 1997, 41, 69-90.
48. Porretta, S.; Birzi, A.; Colla, F.; Greci, F.; Percudani, A. Possibility of using electronic nose with metallic semiconductor sensors (MOS) for quality and shelf-life evaluation of different preserved foods. Ind. Aliment. 1997, 36, 161-165.
49. Suman, M.; Riani, G.; Dalcanale, E. MOS-based artificial olfactory system for the assessment of egg products freshness. Sens. Actuators B Chem. 2007, 125, 40-47.
50. Nicolas, J.; Romain, A.C. Establishing the limit of detection and the resolution limits of odorous sources in the environment for an array of metal oxide gas sensors. Sens. Actuators B Chem. 2004, 99, 384-392.
51. James, D.; Scott, S.M.; Ali, Z.; O'Hare, W.T. Chemical sensors for electronic nose systems. Microchim. Acta 2005, 149, 1-17.
52. Péres, L.O.; Li, R.W.C.; Yamauchi, E.Y.; Lippi, R.; Gruber, J. Conductive polymer gas sensor for quantitative detection of methanol in Brazilian sugar-cane spirit. Food Chem. 2012, 130, 1105-1107.
53. Ameer, Q.; Adeloju, S.B. Polypyrrole-based electronic noses for environmental and industrial analysis. Sens. Actuators B Chem. 2005, 106, 541-552.
54. Lieberzeit, P.A.; Rehman, A.; Najafi, B.; Dickert, F.L. Real-life application of a QCM-based e-nose: Quantitative characterization different plant-degradation processes. Anal. Bioanal. Chem. 2008, 391, 2897-2903.
55. Wilson, A.D.; Baietto, M. Applications and Advances in Electronic-Nose Technologies. Sensors 2009, 9, 5099-5148.
56. Boeker, P. Electronic noses: The methodological concept and its problems-Part 2: Systematic application. Gefahrst. Reinhalt. Luft 2010, 70, 431-436.
57. Boholt, K.; Andreasen, K.; den Berg, F.; Hansen, T. A new method for measuring emission of odour from a rendering plant using the Danish Odour Sensor System (DOSS) artificial nose. Sens. Actuators B Chem. 2005, 106, 170-176.
58. Distante, C.; Leo, M.; Siciliano, P.; Persaud, K.C. On the study of feature extraction methods for an electronic nose. Sens. Actuators B Chem. 2002, 87, 274-288.
59. Ehret, B.; Safenreiter, K.; Lorenz, F.; Biermann, J. A new feature extraction method for odour classification. Sens. Actuators B Chem. 2011, 158, 75-88.
60. Nicolas, J.; Romain, A.C.; Wiertz, V.; Maternova, J.; Andre, P. Using the classification model of an electronic nose to assign unknown malodours to environmental sources and to monitor them continuously. Sens. Actuators B Chem. 2000, 69, 366-371.
61. Koren, Y.; Carmel, L. Robust linear dimensionality reduction. IEEE Trans. Vis. Comput. Graph. 2004, 10, 459-470.
62. Lozano, J.; de la Vega, P.M.; Martinez, E.; Alvarez, F.; Morera, J.; Aguilera, T. Odour discrimination from wastewater treatment plants with a portable electronic nose. Chem. Eng. Trans. 2010, 23, 165-170.
63. Johnson, R.A.; Wichern, D.W. Applied Multivariate Statistical Analysis; Prentice-Hall: Upper Saddle River, NJ, USA, 1998.
64. Brezmes, J.; Ferreras, B.; Llobet, E.; Vilanova, X.; Correig, X. Neural network based electronic nose for the classification of aromatic species. Anal. Chim. Acta 1997, 348, 503-509.
65. Everitt, B. Cluster Analysis; Edward Arnold: London, UK, 1993.
66. Carmel, L.; Levy, S.; Lancet, D.; Harel, D. A feature extraction method for chemical sensors in electronic noses. Sens. Actuators B Chem. 2003; 93, 67-76.
67. González Martı́n, Y.; Cerrato Oliveros, M.C.; Pérez Pavón, J.L.; Garcı́a Pinto, C.; Moreno Cordero, B. Electronic nose based on metal oxide semiconductor sensors and pattern recognition techniques: Characterisation of vegetable oils. Anal. Chim. Acta 2001, 449, 69-80.
68. Goschnick, J.; Koronczi, I.; Frietsch, M.; Kiselev, I. Water pollution recognition with the electronic nose KAMINA. Sens. Actuators B Chem. 2005, 106, 182-186.
69. Zhang, L.; Tian, F.C.; Nie, H.; Dang, L.J.; Li, G.R.; Ye, Q.; Kadri, C. Classification of multiple indoor air contaminants by an electronic nose and a hybrid support vector machine. Sens. Actuators B Chem. 2012, 174, 114-125.
70. Oliveros, M.C.C.; Pavon, J.L.P.; Pinto, C.G.; Laespada, M.E.F.; Cordero, B.M.; Forina, M. Electronic nose based on metal oxide semiconductor sensors as a fast alternative for the detection of adulteration of virgin olive oils. Anal. Chim. Acta 2002, 459, 219-228.
71. Panigrahi, S.; Balasubramanian, S.; Gu, H.; Logue, C.; Marchello, M. Neural-network-integrated electronic nose system for identification of spoiled beef. Food Sci. Technol. 2006, 39, 135-145.
72. Panigrahi, S.; Balasubramanian, S.; Gu, H.; Logue, C.; Marchello, M. Design and development of a metal oxide based electronic nose for spoilage classification of beef. Sens. Actuators B Chem. 2006, 119, 2-14.
73. Sohn, J.H.; Hudson, N.; Gallagher, E.; Dunlop, M.; Zeller, L.; Atzeni, M. Implementation of an electronic nose for continuous odour monitoring in a poultry shed. Sens. Actuators B Chem. 2008, 133, 60-69.
74. McGill, R.A.; Nguyen, V.K.; Chung, R.; Shaffer, R.E.; DiLella, D.; Stepnowski, J.L.; Mlsnab, T.E.; Venezkya, D.L.; Dominguez, D. The "NRL-SAWRHINO": A nose for toxic gases. Sens. Actuators B Chem. 2000, 65, 10-13.
75. Kim, E.; Lee, S.; Kim, J.H.; Kim, C.; Byun, Y.T.; Kim, H.S.; Lee, T. Pattern Recognition for Selective Odor Detection with Gas Sensor Arrays. Sensors 2012, 12, 16262-16273.
76. Zadeh, L.A. Toward a theory of fuzzy information granulation and its centrality in human reasoning and fuzzy logic. Fuzzy Sets Syst. 1997, 90, 111-127.
77. Lavine, B.K.; Mirjankar, N. Clustering and Classification of Analytical Data. In Encyclopedia of Analytical Chemistry; John Wiley and Sons, Inc.: Hoboken, NJ, USA, 2001.
78. Dentoni, L.; Capelli, L.; Sironi, S.; Del Rosso, R.; Centola, P.; Della Torre, M.; Demattè, F. Development of an Electronic Nose for Environmental Monitoring: Detection of Specific Environmentally Important Gases at Their Odor Detection Threshold Concentration. AIP Conf. Proc. 2011, 1362, 207-208.
79. Scott, S.M.; James, D.; Ali, Z. Data analysis for electronic nose systems. Microchim. Acta 2006, 156, 183-207.
80. Sohn, J.H.; Dunlop, M.; Hudson, N.; Il Kim, T.; Yoo, Y.H. Non-specific conducting polymer-based array capable of monitoring odour emissions from a biofiltration system in a piggery building. Sens. Actuators B Chem. 2009, 135, 455-464.
81. 2 sensor array and pattern recognition analysis. Sens. Actuators B Chem. 2001, 77, 228-236.
82. Kim, K.H.; Park, S.Y. A comparative analysis of malodor samples between direct (olfactometry) and indirect (instrumental) methods. Atmos. Environ. 2008, 42, 5061-5070.
83. Kim, K.H. The averaging effect of odorant mixing as determined by air dilution sensory tests: A case study on reduced sulfur compounds. Sensors 2011, 11, 1405-1417.
84. Kim, K.H. Experimental demonstration of masking phenomena between competing odorants via an air dilution sensory test. Sensors 2010, 10, 7287-7302.
85. Capelli, L.; Sironi, S.; del Rosso, R.; Centola, P.; Il Grande, M. A comparative and critical evaluation of odour assessment methods on a landfill site. Atmos. Environ. 2008, 42, 7050-7058.
86. Negri, R.M.; Reich, S. Identification of pollutant gases and its concentrations with a multisensor array. Sens. Actuators B Chem. 2001, 75, 172-178.
87. Wolfrum, E.J.; Meglen, R.M.; Peterson, D.; Sluiter, J. Metal oxide sensor arrays for the detection, differentiation, and quantification of volatile organic compounds at sub-parts-per-million concentration levels. Sens. Actuators B Chem. 2006, 115, 322-329.
88. Barisci, J.N.; Wallace, G.G.; Andrews, M.K.; Partridge, A.C.; Harris, P.D. Conducting polymer sensors for monitoring aromatic hydrocarbons using an electronic nose. Sens. Actuators B Chem. 2002, 84, 252-257.
89. De Vito, S.; Massera, E.; Piga, A.; Martinotto, L.; di Francia. G. On field calibration of an electronic nose for benzene estimation in an urban pollution monitoring scenario. Sens. Actuators B Chem. 2008, 129, 750-757.
90. Cho, J.H.; Kim, Y.W.; Na, K.J.; Jeon, G.J. Wireless electronic nose system for real-time quantitative analysis of gas mixtures using micro-gas sensor array and neuro-fuzzy network. Sens. Actuators B Chem. 2008, 134, 104-111.
91. Gao, D.; Liu, F.; Wang, J. Quantitative analysis of multiple kinds of volatile organic compounds using hierarchical models with an electronic nose. Sens. Actuators B Chem. 2012, 161, 578-586.
92. Lilienthal, A.J.; Loutfi, A.; Duckett, T. Airborne Chemical sensing with mobile robots. Sensors 2006, 6, 1616-1678.
93. Loutfi, A.; Coradeschi, S.; Lilienthal, A.J.; Gonzalez, J. Gas distribution mapping of multiple odour sources using a mobile robot. Robotica 2009, 27, 311-319.
94. Trincavelli, M.; Coradeschi, S.; Loutfi, A. Odour classification system for continuous monitoring applications. Sens. Actuators B Chem. 2009, 139, 265-273.
95. Gonzalez-Jimenez, J.; Monroy, J.G.; Blanco J.L. The Multi-Chamber Electronic-An Improved Olfaction Sensor for Mobile Robotics. Sensors 2011, 11, 6145-6164.
96. Misselbrook, T.H.; Hobbs, P.J.; Persaud, K.C. Use of an electronic nose to measure odour concentration following application of cattle slurry to grassland. J. Agric. Eng. Res. 1997, 66, 213-220.
97. Sohn, J.H.; Smith, R.; Yoong, E.; Leis, J.; Galvin, G. Quantification of odours from piggery effluent ponds using an electronic nose and an artificial neural network. Biosyst. Eng. 2003, 86, 399-410.
98. Pan, L.; Yang, S.X. A new intelligent electronic nose system for measuring and analysing livestock and poultry farm odours. Environ. Monit. Assess. 2007, 135, 399-408.
99. Brattoli, M.; de Gennaro, G.; de Pinto, V.; Loiotile, A.D.; Lovascio, S.; Penza, M. Odour Detection Methods: Olfactometry and Chemical Sensors. Sensors 2011, 11, 5290-5322.
100. Nicolas, J.; Romain, A.C.; Ledent, C. The electronic nose as a warning device of the odour emergence in a compost hall. Sens. Actuators B Chem. 2006, 116, 95-99.
101. Romain, A.C.; Delva, J.; Nicolas, J. Complementary approaches to measure environmental odours emitted by landfill areas. Sens. Actuators B Chem. 2008, 131, 18-23.
102. Sironi, S.; Capelli, L.; Centola, P.; del Rosso, R. Development of a system for the continuous monitoring of odours from a composting plant: Focus on training, data processing and results validation methods. Sens. Actuators B Chem. 2007, 124, 336-346.
103. Romain, A.C.; Andre, P.; Nicolas, J. Three years experiment with the same tin oxide sensor arrays for the identification of malodorous sources in the environment. Sens. Actuators B Chem. 2002, 84, 271-277.
104. Capelli, L.; Sironi, S.; Dentoni, L.; del Rosso, R.; Centola, P.; Demattè, F.; Della Torre, M.; Riccò, I. An innovative system for the continuous monitoring of environmental odours: Results of laboratory and field tests. Chem. Eng. Trans. 2010, 23, 309-314.
105. Dentoni, L.; Capelli, L.; Sironi, S.; del Rosso, R.; Zanetti, S.; Della Torre, M. Development of an Electronic Nose for Environmental Odour Monitoring. Sensors 2012, 12, 14363-14381.
106. Abdullah, A.H.; Shakaff, A.Y.M.; Adom, A.H.; Zakaria, A.; Saad, F.S.A.; Kamarudin, L.M. Chicken farm malodour monitoring using portable electronic nose system. Chem. Eng. Trans. 2012, 30, 55-60.
107. Bourgeois, W.; Burgess, J.E.; Stuetz, R.M. On-line monitoring of wastewater quality: A review. J. Chem. Technol. Biotechnol. 2001, 76, 337-348.
108. House, C.D. Standard Methods for the Examination of Water and Wastewater; Portland Press: London, UK, 2012.
109. Hardoon, D.R.; Szedmak, S.; Shawe-Taylor, J. Canonical correlation analysis: An overview with application to learning methods. Neural Comput. 2004, 16, 2639-2664.
110. Thompson, B. Canonical Correlation Analysis: Uses and Interpretation; Sage: Beverly Hills, CA, USA, 1984.
111. Stuetz, R.M.; George, S.; Fenner, R.A.; Hall, S.J. Monitoring wastewater BOD using a non-specific sensor array. J. Chem. Technol. Biotechnol. 1999, 74, 1069-1074.
112. Lamagna, A.; Reich, S.; Rodriguez, D.; Boselli, A.; Cicerone, D. The use of an electronic nose to characterize emissions from a highly polluted river. Sens. Actuators B Chem. 2008, 131, 121-124.
113. Baby, R.E.; Cabezas, M.; de Reca, E.N.W. Electronic nose: A useful tool for monitoring environmental contamination. Sens. Actuators B Chem. 2000, 69, 214-218.
114. Bourgeois, W.; Stuetz, R.M. Measuring wastewater quality using a sensor array: Prospects for real-time monitoring. Water Sci. Technol. 2000, 41, 107-112.
115. Moody, J.; Darken, C.J. Fast learning in networks of locally-tuned processing units. Neural Comput. 1989, 1, 281-294.
116. Sohn, J.H.; Smith, R.; Yoong, E. Process studies of odour emissions from effluent ponds using machine-based odour measurement. Atmos. Environ. 2006, 40, 1230-1241.
117. Adam, G.; Lemaigre, S.; Romain, A.C.; Nicolas, J.; Delfosse, P. Evaluation of an electronic nose for the early detection of organic overload of anaerobic digesters. Bioprocess Biosyst. Eng. 2013, 36, 23-33.
118. Rosi, P.E.; Miscoria, S.A.; Bernik, D.L.; Negri R.M. Customized design of electronic noses placed on top of air-lift bioreactors for in situ monitoring the off-gas patterns. Bioprocess Biosyst. Eng. 2012, 35, 835-842.
119. Stuetz, R.M.; Bourgeois, W. Application of Non-Specific Gas Sensors for Detecting Odour Abatement Process Failure. In Environmental Odour Management, VDI-Berichte 1850; VDI Verlag GmbH: Düsseldorf, Germany, 2004; pp. 463-471.
120. Capelli, L.; Dentoni, L.; Sironi, S.; del Rosso, R. The need for electronic noses for environmental odour exposure assessment. Water Sci. Technol. 2014, 69, 135-141.
121. Capelli, L.; Sironi, S.; del Rosso, R.; Guillot, J.M. Measuring odours in the environment vs. dispersion modelling: A review. Atmos. Environ. 2013, 79, 731-743.
122. Ranzato, L.; Barausse, A.; Mantovani, A.; Pittarello, A.; Benzo, M.; Palmeri, L. A comparison of methods for the assessment of odor impacts on air quality: Field inspection (VDI 3940) and the air dispersion model CALPUFF. Atmos. Environ. 2012, 61, 570-579.
123. NTA 9055 Luchtkwaliteit-Elektronische Luchtmonitoring-Geur(overlast) en Veiligheid. Available online: http://www.nen.nl/NEN-Shop/Vakgebieden/Milieu/Nieuwsberichten-Milieu/NTA-9055- Elektronische-luchtmonitoring-Geuroverlast-en-veiligheid-gepubliceerd.htm (accessed on 23 October 2014).