Elements | Certified values | MWD Mean ± SD | (%) Recovery | Paired t-testa tExperimental | |
Certified sample of whole blood (μg/l) | |||||
Ca (mg/l) | 14.7 ± 0.3 | 14.65 ± 1.2 (8.19) | 99.7 | 0.985 | |
Pb (μg/l) | 105 ± 24 | 104.8 ± 7.3 (6.96) | 96.8 | 0.0012 | |
Certified sample of human hair (μg/g) | |||||
Ca | 1560 ± 40c | 1556.5 ± 55.2 (3.54) | 99.8 | 0.883 | |
Pb | 33.0 ± 1.2 | 32.56 ± 1.18 (3.62) | 98.7 | 0.095 | |