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 1

Basic information concerning the adsorption tubes used in our study.

Order	Tube; ID	Injected mass (ng); during Exp.^a	Calibration results
			𝑅^2	Slope^b
1	XF		0.997	1.02
2	F	5	0.998	1.06
3	K		0.998	1.02
4	C		0.998	0.99
5	D	10	0.994	1.01
6	E		0.996	1.05
7	J		0.998	1.06
8	KM	30	0.996	1.03
9	L		0.998	0.93
10	H		0.998	1.06
11	D	50^c	0.999	1.08
12	I		0.999	1.06

aMasses were injected in each of all four experiments.
^bSlope values were calculated using zero offset.
^c50 ng data were not obtained in Exp. 4 (due to system contamination).