Table 3.
Level of trace elements in subject’s nail according to digestion methods (μg/g)
| Element | Digestion Methods Mean (SD); n= 20 |
P values | ||
|---|---|---|---|---|
|
| ||||
| Wet Acid (HNO3) | Wet Acid (HNO3 & H2O2) | Dry Ash | ||
| Cu | 5.714 (1.22) | 5.234 (1.13) | 4.985 (0.86) | 0.100 |
| Se | 0.688 (0.17) | 0.501 (0.06)a | 0.104 (0.02)a,b | < 0.001 |
| Mn | 1.555 (0.35) | 0.963 (0.40)a | 1.243 (0.16)a | < 0.001 |
| Mg | 66.90 (16.81) | 61.53 (10.35) | 53.76 (7.52)a,b | 0.005 |
| Zn | 101.28 (16.74) | 105.17 (19.87) | 86.93 (14.47)a,b | 0.004 |
One-way repeated measure ANOVA test.
a
Significantly different (P < 0.05) compared to wet acid (HNO3) method.
b
Significantly different (P < 0.05) compared to wet acid (HNO3 & H2O2) method.