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Table 5 Statistics of the data on Pb

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

Vegetables 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 Dry weight basis standard for Pb, µg/g
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
White Potato 48 16 33.33 40.968 µg/g dry weight basis 32 66.67 ND 32 66.67 100 7.9015 17.208 0.47619
Green Cabbage 49 8 16.33 29.794 µg/g dry weight basis 41 83.67 0.002 µg/g 37 75.51 90.24 5.9505 12.6865 4.28571
Red Spinach 61 22 36.07 38.439 µg/g dry weight basis 39 63.93 0.049 µg/g 35 57.38 89.74 6.799 13.79 3.75
White Radish 63 18 28.57 36.265 µg/g dry weight basis 45 71.43 1.209 µg/g 44 69.84 97.78 9.377 17.604 2
Green Bean 64 20 31.25 48.43 µg/g dry weight basis 44 68.75 ND 44 68.75 100 5.963 23.425 0.95238
Overall 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  
  1. ND not detected (at ppb level for 0.2 g dry sample digested into 100 ml volume)