Читать книгу Chemical Analysis - Francis Rouessac - Страница 50

The significant development of chromatography in quantitative analysis is essentially due to its reliability and its precision. The relationship between the injected mass of the analyte on the column and the area of the corresponding peak on the resultant chromatogram leads to a comparative method used in many standardized assay protocols. The reproducibility of separations, allied with data processing software, makes it possible to automate all the calculations associated with these analyses. Trace and ultratrace analyses by chromatography are used, particularly in EPA methods for environmental analysis, although their costs are rather high. The three most widely used methods are described here, along with their simplest configuration.