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Selectivity in Analytical Chemistry

Selectivity in Analytical Chemistry Recommendations for its UsePoster presented at the IUPAC Congress/General AssemblyJuly 2001 Evolution of the terminologyThe use of the term Selectivity has evolved in parallel with thedevelopment of more sensitive and discriminating methods that canquantify analytes with less interference from other componentsthan earlier methods were able to do. Modern methods oftencomprise several strategies that introduce their own Selectivity toreduce interferences. In this way, highly selective methods can correct use of the term Selectivity and its clear distinctionfrom the term specificity are discussed.

Selectivity is the recommended term in analytical chemistry to express the extent of interferences. To avoid confusion, the use of the term specificity is to be discouraged, as it is incorrect. A method is either specific or not. Few, if any, methods are specific. 2. Definition of Selectivity Selectivity refers to the extent to which a method ...

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