. 2008 Apr 4;8(4):2413–2423. doi: 10.3390/s8042413

Table 1.

The results of QA/QC in chemical analysis for soils and plants (Units: μg g⁻¹).

	Reagent blank mean^a)		IDL^b)		ADL^c)
	soil	plant	soil	plant	soil	plant
Cd	0.009	0.008	0.200	0.025	0.125	0.014
Cu	0.039	0.054	0.200	0.025	0.776	0.019
Pb	0.728	0.131	2.000	0.250	1.849	0.111
Zn	0.865	0.831	0.400	0.050	0.839	0.312

^a)

Mean of 8 values

^b)

Instrumental detection limit was converted from μg mL⁻¹ to μg g⁻¹ using factors of 40 for soils and 5 for plants

^c)

Analytical detection limit was calculated by multiplying the standard deviation of the mean reagent blank value by 2.365: this value derived from t-table using degree of freedom 7 (95% confidence limit)