Evaluation of the Memory Effect on Gold-Coated Silica Adsorption Tubes Used for the Analysis of Gaseous Mercury by Cold Vapor Atomic Absorption Spectrometry

Figure 2

Results of short-term Exp. (Exp. 1). Analytical intensity obtained for each heating cycle during the initial analysis of adsorption tubes dosed with different masses of mercury (5, 10, 30, and 50 ng). In each heating cycle, standard mercury was analyzed first and blank runs were made successively. Each point is average of triplicate analysis. In the legend section, the letter “B” is representing investigation of Brown et al. [14]. 5 to 50 ng (B) represents observation from 2nd heating cycle in our previous investigation [14].