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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


SILVA, Láuris Lucia da et al. Tracers: the use of chemical agents for hydrological, environmental, petrochemical and biological studies. Quím. Nova [online]. 2009, vol.32, n.6, pp.1576-1585. ISSN 0100-4042.

This paper presents a revision of the history, definitions, and classification of tracers (natural and artificial, internal and external). The fundamental ideas concerning tracers are described, followed by their application illustrated by typical examples. The advantages and disadvantages of five classes among the most frequently used external tracers (fluorescent, microbial, chemical, radioactive and activable isotopes) are also described in detail. This review also presents some interesting and modern applications of tracers in the areas of diagnostics in medical practice, environmental pollution, hydrology and petroleum chemistry.

Keywords : tracers; definitions and classifications; technological applications.

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