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Table 1 Levels (μg/g d.w.) of chromium, cadmium, lead and mercury in ewe's milk, fresh, mature cheese and ricotta collected in 8 farms located in southern Italy.

From: Heavy Metal Concentrations in Dairy Products from Sheep Milk Collected in Two Regions of Southern Italy

Elements Min* Max M ± SD
Milk
Cr 0.06 0.40 0.14 ± 0.113
Cd 0.05 0.10 0.07 ± 0.019
Pb 0.11 0.28 0.18 ± 0.069
Hg 0.0014 0.0029 0.002 ± 0.005
Ricotta
Cr 0.03 0.68 0.32 ± 0.226
Cd 0.06 0.24 0.13 ± 0.212
Pb 0.12 0.70 0.391 ± 0.212
Hg 0.0006 0.0028 0.0017 ± 0.0008
Fresh cheese
Cr 0.40 0.53 0.46 ± 0.042
Cd 0.05 0.35 0.19 ± 0.114
Pb 0.13 1.15 0.47 ± 0.365
Hg 0.0006 0.0017 0.008 ± 0.0005
Mature cheese
Cr 0.34 0.67 0.47 ± 0.102
Cd 0.06 0.15 0.11 ± 0.041
Pb 0.21 1.07 0.58 ± 0.271
Hg 0.0002 0.0056 0.0014 ± 0.0001
  1. *min = minimum, max = maximum, M = mean value SD = standard deviation