Table 2. The concentration of heavy metals in rice from Zhejiang province (mg/kg).

Elements	n	Mean±SDa	P95a	range	MACb	No. of > MAC
As	248	0.080±0.051	0.166	<LOD–0.246	0.7	0
Cd	248	0.037±0.015	0.105	<LOD–0.112	0.2	0
Hg	224	0.005±0.003	0.060	<LOD–0.088	0.02	15
Pb	248	0.060±0.034	0.206	0.005–0.220	0.2	9

^aTarget analytes with concentrations lower than LOD were treated as one-half of LOD when calculating the mean values; SD, standard deviation.

^bMaximum allowable concentrations of contaminants in foods [19], [20].