Table 1. The descriptive statistics of lead and cadmium from the Sixth China TDS, 2016–2019 (μg/kg).
| Food category | Lead | Cadmium | |||||||
| Detection rate (%) | Mean | Min | Max | Detection rate (%) | Mean | Min | Max | ||
| Note: When calculating the median/mean, the results below the LOD were set to 1/2 LOD.
Abbreviations: TDS=total diet study; LOD=limit of detection. | |||||||||
| Cereals | 100 | 11.9±20.6 | 1.2 | 47.6 | 100 | 14.5±33.5 | 3.0 | 83.2 | |
| Legumes | 100 | 12.9±15.5 | 4.7 | 34.9 | 100 | 16.8±18.5 | 4.5 | 41.9 | |
| Potatoes | 100 | 11.2±16.2 | 0.4 | 35.5 | 100 | 11.1±14.4 | 2.3 | 30.8 | |
| Meats | 100 | 10.3±15.3 | 1.3 | 28.9 | 100 | 2.4±3.7 | 0.6 | 8.1 | |
| Eggs | 95.8 | 9.7±12.4 | <LOD | 25.3 | 100 | 1.1±4.0 | 0.1 | 9.0 | |
| Aquatic foods | 100 | 14.1±19.4 | 2.2 | 37.4 | 100 | 16.9±46.3 | 0.9 | 83.8 | |
| Dairy products | 95.8 | 1.6±2.6 | <LOD | 4.8 | 50.0 | 0.1±0.5 | <LOD | 0.9 | |
| Vegetables | 100 | 15.7±24.4 | 3.6 | 54.0 | 100 | 12.5±19.1 | 2.9 | 46.6 | |
| Fruits | 100 | 5.0±8.6 | 0.3 | 19.1 | 100 | 0.9±1.7 | 0.3 | 4.3 | |
| Sugar | 100 | 9.7±30.4 | 0.4 | 75.0 | 100 | 3.4±19.5 | 0.1 | 49.0 | |
| Beverages & water | 100 | 1.9±2.7 | 0.2 | 5.7 | 50.0 | 0.1±0.4 | <LOD | 0.9 | |
| Alcohol | 100 | 1.9±3.4 | 0.1 | 7.1 | 66.7 | 0.35±1.3 | <LOD | 2.9 | |