“…An additional advantage of sensor arrays is the possibility to make analysis of poor defined analytes, such as aromas or taste of food products. Conductometric electronic noses based on CP were applied for detection of fire [132], aromatic hydrocarbons [133], bacteria and fungi [134][135][136][137][138][139][140], pollutants in water [134,141], for monitoring of emissions from sewage plants [142] or for analysis of wines [143], olive oils [144,145], different soils [146] and grain quality [147] and other poor defined analytes. Surprisingly, instead of using of different classes of CP, derivatives of one CP were typically used to get different selectivity of single sensors of the electronic noses.…”