Research Article

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

Table 4

Relative standard error (RSE) of blank heating cycles in intermediate-term type A study (Exp. no. 2).

OrderInterval daysBlank heating cyclesMean
123456

Mean mass (ng)b

11a0.1680.0270.0130.0070.0040.044
280.0040.0020.0020.0020.0010.0010.002
3150.0030.0020.0020.0010.0010.0020.002

RSE (%)

11a45.9248.7550.4152.4644.1148.33
286.9111.2111.7113.8718.5014.2512.74
31510.0419.2223.3020.2933.2122.8821.49

Initial standard injection mass values were not included.
bLiberation of mean excess masses for blank runs (triplicate) from four different injection amounts of 5, 10, 30, and 50 ng.