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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.
tracers; definitions and classifications; technological applications
tracers; definitions and classifications; technological applications
REVISÃO
Traçadores: o uso de agentes químicos para estudos hidrológicos, ambientais, petroquímicos e biológicos
Tracers: the use of chemical agents for hydrological, environmental, petrochemical and biological studies
Láuris Lucia da SilvaI; Claudio Luis DonniciI,*; José Danilo AyalaI; Cíntia Helena de FreitasII; Rubens Martins MoreiraII; Amenônia Maria Ferreira PintoII
IDepartamento de Química, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte - MG, Brasil
IICentro de Desenvolvimento da Tecnologia Nuclear, Av. Prof. Mario Werneck,s/n, Cidade Universitária, 31270-901 Belo Horizonte - MG, Brasil
ABSTRACT
Explicação:
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