Table 4 The maximum residue limits (MRLs ), ranges of concentration, mean values, detection percentage and percentage of samples exceeding the limit, of five heavy metals in edible mushrooms.
MRLsa (mg kg−1) | Concentration (mg kg−1) | \(\:\stackrel{-}{\text{X}}\) ± S / (mg kg−1) | No. of detectable(%) | No. of samples > MRLs(%) | |
|---|---|---|---|---|---|
Pb | 0.3/0.5/1.0 | ND-1.6637 | 0.0624 ± 0.0088 | 90.16% | 4/244(1.64%) |
Cd | 0.2/0.5/1.0/2.0 | ND-2.5292 | 0.3215 ± 0.0322 | 98.36% | 56/244(22.95%) |
As | 0.5/0.8 | ND-2.7739 | 0.1728 ± 0.0985 | 95.08% | 20/244(8.20%) |
Hg | 0.1 | ND-0.2406 | 0.0148 ± 0.0041 | 86.89% | 8/244(3.28%) |
Cr | 0.5 | 0.0230–0.5593 | 0.1165 ± 0.0114 | 100% | 0/244(0.00%) |
