Table 1.
Trace Elements | HPV (−) (N = 282) | HPV (+) (N = 551) | P | |
---|---|---|---|---|
n/% | n/% | χ2 | ||
Ni (mg/kg) | 56.905 | < 0.001 | ||
Q1 (0.0212~) | 70/24.82 | 282/51.18 | ||
Q2 (0.1232~) | 71/25.18 | 112/20.33 | ||
Q3 (0.1892~) | 70/24.82 | 81/14.70 | ||
Q4 (0.2908~) | 71/25.18 | 76/13.79 | ||
Zn (μmol/L) | 6.164 | 0.087 | ||
Q1 (28.4286~) | 70/24.82 | 185/33.58 | ||
Q2 (86.2117~) | 71/25.18 | 120/21.78 | ||
Q3 (106.5923~) | 70/24.82 | 114/20.69 | ||
Q4 (130.8978~) | 71/25.18 | 132/23.95 | ||
Fe (mmol/L) | 2.449 | 0.485 | ||
Q1 (0.4357~) | 70/24.82 | 137/24.86 | ||
Q2 (5.5078~) | 71/25.18 | 160/29.04 | ||
Q3 (7.3654~) | 70/24.82 | 114/20.69 | ||
Q4 (9.1276~) | 71/25.18 | 140/25.41 | ||
Cu (μmol/L) | 4.098 | 0.251 | ||
Q1 (2.0900~) | 70/24.82 | 114/20.69 | ||
Q2 (12.1317~) | 71/25.18 | 125/22.69 | ||
Q3 (20.0032~) | 70/24.82 | 168/30.49 | ||
Q4 (31.8041~) | 71/25.18 | 144/26.13 | ||
Mn (μmol/L) | 5.396 | 0.145 | ||
Q1 (0.0100~) | 70/24.82 | 109/19.78 | ||
Q2 (0.1254~) | 71/25.18 | 134/24.32 | ||
Q3 (0.4947~) | 70/24.82 | 175/31.76 | ||
Q4 (0.9320~) | 71/25.18 | 133/24.14 | ||
Cd (μmol/L) | 14.085 | 0.003 | ||
Q1 (0.0025~) | 70/24.82 | 175/31.76 | ||
Q2 (0.0248~) | 71/25.18 | 109/19.78 | ||
Q3 (0.0371~) | 70/24.82 | 172/31.22 | ||
Q4 (0.0571~) | 71/25.18 | 95/17.24 | ||
As (mg/kg) | 11.301 | 0.001 | ||
<0.02 | 146/51.77 | 218/39.56 | ||
≥ 0.02 | 136/48.23 | 333/60.44 | ||
Se (mg/kg) | 19.236 | 0.000 | ||
<0.02 | 117/41.49 | 317/57.53 | ||
≥ 0.02 | 165/58.51 | 234/42.47 |