Non-metal Inorganic Ions and Molecules

In this chapter, electrochemical sensors and biosensors for the analysis of inorganic nonmetallic analytes, comprising selected inorganic anions, such as nitrate, nitrite, sulfate, cyanide, and hydroxyl, cations (H+, NH4 +, N2H5 +), and inorganic molecules (O2, H2O2, and common toxic gases like H2S, SO2, NOX, and Cl2) of environmental importance are presented. Additionally, some other species from the individual categories will be shortly presented throughout the text in an effort to cover briefly most analytes which deserve some attention with respect to their environmental occurrence and possible impact on the biosphere.