Table 1 Accuracy and precision of ICP-MS measurements of certified reference material (NIST 1515, apple leaf)
Element | Certified reference concentrations, µg g−1 | Sample quantity, µg | ||
|---|---|---|---|---|
(RSD %) | 500 | 1000 | 2000 | |
Accuracy, % (precision, RSD in %) | ||||
K | 16,100 ± 200 (1) | 89 (4) | 97 (4) | 100 (1) |
Ca | 15,260 ± 150 (1) | 88 (4) | 94 (4) | 98 (2) |
Mg | 2710 ± 80 (3) | 93 (4) | 100 (4) | 103 (3) |
Al | 286 ± 9 (3) | 91 (4) | 96 (7) | 98 (1) |
Mn | 54 ± 1 (6) | 87 (4) | 93 (4) | 96 (1) |
B | 27 ± 2 (7) | 87 (11) | 86 (11) | 87 (5) |
Zn | 12.5 ± 0.3 (2) | 100 (19) | 101 (19) | 98 (2) |
Cu | 5.64 ± 0.24 (4) | 96 (3) | 99 (3) | 97 (2) |
Ni | 0.91 ± 0.12 (13) | 128 (62) | 102 (62) | 98 (7) |
Mo | 0.094 ± 0.013 (14) | 84 (32) | 102 (32) | 87 (7) |