Table 4.
Spearman’s rank correlation coefficients between urine metals in the unpolluted area
| UMg (mg/gCr) | UCa (mg/g Cr) | UFe (mg/g Cr) | UZn (mg/g Cr) | UAs (mg/g Cr) | UCd (mg/g Cr) | UCu (mg/g Cr) | UPb (mg/g Cr) | |
|---|---|---|---|---|---|---|---|---|
| UMg (mg/g Cr) | 1.000 | 0.795** | 0.458** | 0.602** | 0.558** | 0.259** | 0.068 | 0.327** |
| UCa (mg/g Cr) | 1.000 | 0.590** | 0.573** | 0.479** | 0.285** | 0.246** | 0.405** | |
| UFe (mg/g Cr) | 1.000 | 0.438** | 0.287** | 0.199** | 0.453** | 0.371 | ||
| UZn (mg/g Cr) | 1.000 | 0.405** | 0.248** | 0.256** | 0.386** | |||
| UAs (μg/g Cr) | 1.000 | 0.281** | 0.124 | 0.390** | ||||
| UCd (μg/g Cr) | 1.000 | 0.295** | 0.261** | |||||
| UCu (μg/g Cr) | 1.000 | 0.430** | ||||||
| UPb (μg/g Cr) | 1.000 |
**P < 0.01; *P < 0.05. UAs, concentration of arsenic in the urine; UCa, concentration of calcium in the urine; UCd, concentration of cadmium in the urine; UCu, concentration of copper in the urine; UFe, concentration of iron in the urine; UMg, concentration of magnesium in the urine; UPb, concentration of lead in the urine; UZn, concentration of zinc in the urine.