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Table 2 Overall statistics of the data for the metals across all vegetables

From: Environmental surveillance of commonly-grown vegetables for investigating potential lead and chromium contamination intensification in Bangladesh

Heavy metal Total count of samples analyzed Contamination found in samples Samples with safe levels Samples yielding ND Median, µg/g dry weight basis Upper Quartile, µg/g dry weight basis
Total count % of total count of analyzed samples Maximum level occurred Total count % of total count of analyzed samples Minimum level detected, dry weight basis Total count % of total count of analyzed samples % of total sample count with safe levels
Pb 285 84 29.47 48.43 µg/g dry weight basis 201 70.53 0.002 µg/g 192 67.37 95.52 7.601 15.237
Cr 290 2 0.69 305.991 µg in standard 50 g FW 288 99.31 245 84.48 85.07 1.637 4.614
Cd 286 51 17.83 5.484 µg/g dry weight basis 235 82.17 0.049 µg/g 150 52.48 63.83 0.67 1.2678
  1. ND not detected (at ppb level for 0.2 g dry sample digested into 100 ml volume), FW fresh weight