Sample sites | Vegetable samples | Heavy metals (mg∙kg−1) | |||||
Cr | Cd | Pb | As | Hg | HPI | ||
Xiwang | Cucumber | 0.359 ± 0.56 | 0.0477 ± 0.21 | 0.219 ± 1.11 | 0.178 ± 0.18 | 0.0066 ± 0.02 | 0.085 |
Tomato | 0.41 ± 0.52 | 0.0489 ± 0.14 | 0.234 ± 1.32 | 0.185 ± 0.45 | 0.0078 ± 0.03 | 0.092 | |
Celery | 0.517 ± 0.95 | 0.0517 ± 0.27 | 0.376 ± 1.29 | 0.196 ± 0.51 | 0.0153 ± 0.01 | 0.125 | |
Wenchang | Cucumber | 0.224 ± 0.34 | 0.0421 ± 0.33 | 0.204 ± 1.55 | 0.146 ± 0.32 | 0.0058 ± 0.01 | 0.070 |
Tomato | 0.278 ± 0.41 | 0.0437 ± 0.19 | 0.212 ± 1.60 | 0.159 ± 0.34 | 0.0067 ± 0.02 | 0.077 | |
Celery | 0.359 ± 0.33 | 0.0481 ± 0.27 | 0.227 ± 1.34 | 0.164 ± 0.41 | 0.0073 ± 0.02 | 0.086 | |
Fanyao | Cucumber | 0.298 ± 0.71 | 0.0363 ± 0.12 | 0.203 ± 1.28 | 0.165 ± 0.47 | 0.0057 ± 0.01 | 0.073 |
Tomato | 0.301 ± 0.58 | 0.0387 ± 0.34 | 0.217 ± 1.62 | 0.177 ± 0.45 | 0.0062 ± 0.04 | 0.077 | |
Celery | 0.379 ± 0.28 | 0.0419 ± 0.33 | 0.241 ± 0.98 | 0.182 ± 0.23 | 0.0071 ± 0.03 | 0.087 | |
Sanyuan | Cucumber | 0.455 ± 0.72 | 0.0503 ± 0.17 | 0.227 ± 0.69 | 0.196 ± 0.31 | 0.0084 ± 0.03 | 0.097 |
Tomato | 0.482 ± 0.43 | 0.0512 ± 0.28 | 0.249 ± 1.32 | 0.159 ± 0.45 | 0.0089 ± 0.04 | 0.097 | |
Celery | 0.522 ± 0.55 | 0.0545 ± 0.55 | 0.325 ± 1.01 | 0.168 ± 0.65 | 0.0091 ± 0.01 | 0.107 | |
Dongzhang | Cucumber | 0.221 ± 0.51 | 0.0363 ± 0.78 | 0.201 ± 1.43 | 0.199 ± 0.55 | 0.0063 ± 0.01 | 0.073 |
Tomato | 0.247 ± 0.39 | 0.0379 ± 0.69 | 0.217 ± 1.71 | 0.117 ± 0.71 | 0.0072 ± 0.03 | 0.070 | |
Celery | 0.298 ± 0.44 | 0.0434 ± 0.17 | 0.233 ± 1.82 | 0.154 ± 0.91 | 0.0081 ± 0.02 | 0.082 | |
Nanzhuang | Cucumber | 0.376 ± 0.83 | 0.0467 ± 0.49 | 0.209 ± 2.02 | 0.154 ± 0.74 | 0.0043 ± 0.03 | 0.075 |
Tomato | 0.399 ± 0.73 | 0.0479 ± 0.81 | 0.211 ± 1.62 | 0.161 ± 0.32 | 0.0055 ± 0.02 | 0.081 | |
Celery | 0.432 ± 1.21 | 0.0509 ± 0.23 | 0.224 ± 1.23 | 0.173 ± 0.52 | 0.0067 ± 0.01 | 0.089 | |
Dongbai | Cucumber | 0.401 ± 0.99 | 0.0536 ± 0.71 | 0.218 ± 1.37 | 0.171 ± 0.43 | 0.0058 ± 0.02 | 0.085 |
Tomato | 0.437 ± 0.87 | 0.0554 ± 0.32 | 0.244 ± 1.24 | 0.187 ± 0.59 | 0.0066 ± 0.02 | 0.094 | |
Celery | 0.475 ± 0.79 | 0.0572 ± 0.92 | 0.293 ± 1.44 | 0.199 ± 0.71 | 0.0078 ± 0.01 | 0.104 | |
Safe limit | 0.50 | 0.05 | 0.20 | 0.50 | 0.01 |
|