Table 5 in Quantitative variations of usnic acid and selected elements in terricolous lichen Cladonia mitis Sandst., with respect to different environmental factors - A chemometric approach

Table 5 Comparison of obtained results and target values for lichen certified reference material (μg/g) (for other elements target values were not available). ElementBCR-482 Lichentarget values (uncertainty) (mg/kg)obtained (mean a±s.d.) (mg/kg)Cd0.56 (0.02)0.51 ± 0.01Cr4.12 (0.15)3.81 ± 0.26Cu7.03 (0.19)7.64 ± 0.55Ni2.47 (0.07)2.28 ± 0.18Pb40.9 (1.4)38.1 ± 0.2Zn100.6 (2.2)94.6 ± 0.3 a n =3.