Research Article
Measurement of Magnesium, Zinc, and Copper in Human Serum by Using Isotope Dilution Inductively Coupled Plasma Mass Spectrometry (ID ICP-MS)
Table 2
Repeatability of magnesium, zinc, and copper in human serum by ID ICP-MS.
| | Mg (mg·kg−1) | Zn (mg·kg−1) | Cu (mg·kg−1) | Level 1 | Level 2 | Level 3 | Level 1 | Level 2 | Level 3 | Level 1 | Level 2 |
| Day 1 | 1# | 18.0 | 23.3 | 28.7 | 0.625 | 0.831 | 1.597 | 1.06 | 1.61 | 18.0 | 23.3 | 28.7 | 0.627 | 0.834 | 1.583 | 1.06 | 1.62 | 18.1 | 23.2 | 28.9 | 0.646 | 0.835 | 1.610 | 1.06 | 1.62 | 2# | 18.0 | 23.3 | 28.8 | 0.631 | 0.834 | 1.597 | 1.07 | 1.60 | 18.0 | 23.3 | 28.8 | 0.627 | 0.825 | 1.594 | 1.06 | 1.62 | 18.0 | 23.2 | 29.0 | 0.634 | 0.832 | 1.595 | 1.06 | 1.62 | 3# | 18.0 | 23.3 | 28.7 | 0.628 | 0.818 | 1.607 | 1.06 | 1.61 | 18.0 | 23.3 | 28.7 | 0.634 | 0.819 | 1.599 | 1.06 | 1.63 | 18.0 | 23.3 | 28.9 | 0.625 | 0.826 | 1.596 | 1.06 | 1.61 |
| Day 2 | 4# | 18.0 | 23.3 | 28.7 | 0.644 | 0.828 | 1.601 | 1.05 | 1.60 | 18.0 | 23.2 | 28.7 | 0.634 | 0.827 | 1.606 | 1.05 | 1.60 | 18.0 | 23.3 | 28.7 | 0.633 | 0.825 | 1.616 | 1.05 | 1.60 | 5# | 18.0 | 23.2 | 28.7 | 0.634 | 0.827 | 1.599 | 1.05 | 1.61 | 18.0 | 23.3 | 28.7 | 0.632 | 0.830 | 1.596 | 1.06 | 1.60 | 18.0 | 23.3 | 28.7 | 0.629 | 0.826 | 1.600 | 1.06 | 1.62 | 6# | 18.0 | 23.3 | 28.7 | 0.628 | 0.823 | 1.606 | 1.06 | 1.60 | 18.0 | 23.2 | 28.7 | 0.633 | 0.830 | 1.591 | 1.06 | 1.59 | 18.0 | 23.3 | 28.8 | 0.632 | 0.825 | 1.602 | 1.06 | 1.60 |
| s | 0.03 | 0.03 | 0.09 | 0.006 | 0.005 | 0.008 | 0.005 | 0.010 |
| Avg | 18.0 | 23.3 | 28.8 | 0.632 | 0.828 | 1.600 | 1.06 | 1.61 |
| CV | 0.2% | 0.1% | 0.3% | 0.9% | 0.6% | 0.5% | 0.4% | 0.6% |
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