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<abstract language="eng">Immunoassay techniques provide simple, powerful and inexpensive methods for analysis of environmental contaminants. However, the acceptance of immunoassays is dependent on the clear demonstration of quality and validity compared to more traditional techniques. In this review, primarily, the understanding and the fundamentals of immunoassay methods are given in order to make good use of immunoassays, especially of EIA tests. Special attention is given to the concepts related to the enzyme-linked immunosorbent assay (ELISA) formats, such as inhibition concentration at 50% (IC50), detection limit (LOD), cross-reactivity (CR %). It is also explained why some immunoassays are quantitative methods whereas others can only be used as screening methods. A list of main commercial kits for detection of priority pollutants is given in order to help analysts. Others formats, such as flow-injection immunoassay analysis (FIIA), immunoassay chromatography and immunosensors are also cited

Métodos imunoquímicos para análise de contaminantes ambientais: conceitos, estado da arte e perspectivas