ABSTRACT
Biosensors could be useful tools to compete with often tedious,
complex, and expensive standard methods. Conductometric enzyme
biosensors have important advantages as they do not need the use
of a reference electrode; they operate at low-amplitude alternating
voltages, thus preventing Faraday processes on electrodes; they are
insensitive to light; and they can be miniaturized and integrated
easily by using cheap standard thin-film technology. In this chapter
some examples of enzyme conductometric biosensors with their
advantages and disadvantages and perspectives of their application
for different human domains such as biomedicine, environmental
monitoring, agriculture, and biotechnology have been described and
summarized.