| Element | BCR-146R, Aqua regia | CRM052, Aqua regia | | BCR-146R | | CRM052 | | Found ± σ, µg·g−1 | Certified ± 95% CI | Found ± σ, µg·g−1 | Certified ± 95% CI | | Found ± 2σ | | Found ± 2σ | | (n = 8) | (µg·g−1) | (n = 6) | (µg·g−1) | | (n = 8) | | n = 6 | |
| B | 17.3 ± 1.6 | NA | 177 ± 11 | NA | δ11B. ‰ | −3.40 ± 1.53 | | 7.21 ± 1.09 | | Cd | 17.7 ± 0.4 | 18.4 ± 0.4 | 263 ± 9 | 256 ± 6 | δ114Cd. ‰ | 0.11 ± 0.09 | | −0.01 ± 0.09 | | Cr | 175 ± 10 | 174 ± 7 | 346 ± 19 | 332 ± 5 | δ53Cr. ‰ | 0.04 ± 0.09 | | 0.14 ± 0.07 | | Cu | 798 ± 25 | 831 ± 16 | 130 ± 7 | 130 ± 3 | δ65Cu. ‰ | 0.22 ± 0.06 | | 0.84 ± 0.14 | | Fe | 13600 ± 800 | NA | 4610 ± 320 | 4280 ± 208 | δ56Fe. ‰ | 0.18 ± 0.05 | | 0.80 ± 0.07 | | Pb | 548 ± 43 | 583 ± 17 | 115 ± 11 | 108 ± 3 | 206Pb/207Pb | 1.1496 ± 0.0002 | | 1.2078 ± 0.0004 | | | | | | | 208Pb/207Pb | 2.4288 ± 0.0003 | | 2.4650 ± 0.0004 | | Sr | 1070 ± 99 | NA | 243 ± 13 | 113 ± 11 | 87Sr/86Sr | 0.70805 ± 0.00003 | | 0.70914 ± 0.00004 | | Tl | 0.469 ± 0.033 | NA | 75.5 ± 6.2 | 71.6 ± 2.7 | δ205 Tl. ‰ | −0.50 ± 0.04 | | −0.41 ± 0.09 | | Zn | 3050 ± 170 | 3040 ± 60 | 512 ± 34 | 516 ± 12 | δ66Zn. ‰ | −0.12 ± 0.05 | | −0.18 ± 0.05 | |
| Element | GBW 07410 | | ERM-CC141, Aqua regia | | ERM-CC141, total | | Found, µg·g−1 | Certified ± 95% CI | Recovery, % | Found, µg·g−1 | Certified ± 95% CI | Recovery, % | Found, µg·g−1 | Certified ± 95% CI | Recovery, % |
| B | 42.1 | 38.3 ± 4, 8 | 110 | | NA | NA | 16 | NA | NA | Cd | 0.117 | 0.086 ± 0,015 | 136 | 0.28 | 0.25 ± 0.04 | 112 | 0.31 | 0.35 ± 0.05 | 89 | Cr | 57 | 66 ± 4, 5 | 86 | 30 | 31 ± 4 | 97 | 66 | 86 ± 8 | 77 | Cu | 23.7 | 23.2 ± 2, 2 | 102 | 13 | 12.4 ± 0.9 | 105 | 14.4 | 14.4 ± 1.4 | 100 | Fe | 32200 | 32200 | 100 | 19800 | NA | NA | 24800 | NA | NA | Pb | 29.9 | 29.2 ± 3, 2 | 102 | 34.4 | 32.2 ± 1.4 | 107 | 42.1 | 41 ± 4 | 103 | Sr | 175 | 188 ± 9 | 93 | 12 | NA | NA | 68 | NA | NA | Tl | 0.66 | 0.62 ± 0, 16 | 106 | 0,14 | NA | NA | 0.52 | NA | NA | Zn | 71.7 | 69.1 ± 2, 7 | 104 | 52 | 50 ± 4 | 104 | 60 | 57 ± 4 | 105 |
| | GBW 07410 | ERM-CC141 | Repeatability, 2σ | Intermediate precision, 2σ | | | Found | Found | Mushrooms, n = 8 | Leaves, n = 12 | Soil, n = 10 | Mushrooms, n = 16 | Leaves, n = 24 | Soil, n = 20 | |
| δ11B, ‰ | −6.0 | 4.5 | 3.2 | 0.7 | 1.6 | 5.4 | 1.2 | 2.4 | | δ114Cd, ‰ | −0.07 | −0.11 | 0.022 | 0.032 | 0.074 | 0.041 | 0.072 | 0.116 | | δ53Cr, ‰ | 0.11 | 0.06 | NA | NA | 0.078 | NA | NA | 0.107 | | δ65Cu, ‰ | 0.34 | 0.28 | 0.074 | 0.078 | 0.052 | 0.097 | 0.086 | 0.073 | | δ56Fe, ‰ | 0.16 | 0.06 | 0.077 | 0.056 | 0.034 | 0.086 | 0.081 | 0.059 | | 208Pb/207Pb | 2.4452 | 2.4431 | 0.0037 | 0.0053 | 0.0021 | 0.0040 | 0.0058 | 0.0024 | | 206Pb/207Pb | 1.1781 | 1.1913 | 0.0022 | 0.0034 | 0.0011 | 0.0028 | 0.0041 | 0.0016 | | 87Sr/86Sr | 0.7122 | 0.7291 | 0.0014 | 0.0001 | 0.0002 | 0.0018 | 0.0002 | 0.0002 | | δ205Tl, ‰ | −0.53 | −0.67 | 0.089 | 0.106 | 0.031 | 0.112 | 0.122 | 0.059 | | δ66Zn, ‰ | 0.02 | 0.18 | 0.048 | 0.062 | 0.034 | 0.088 | 0.095 | 0.061 | |
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