Journal of Environmental and Public Health / 2015 / Article / Tab 2

Research Article

Determination of Heavy Metals Concentration in Traditional Herbs Commonly Consumed in the United Arab Emirates

Table 2

Concentration range of cadmium, lead, copper, iron, and zinc (mg·kg−1) in herb samples, and percentage of samples above permissible limits (PL).

HerbsCadmium (Cd)Lead (Pb)Copper (Cu)Iron (Fe)Zinc (Zn)

MintRange (mg·kg−1)1.44 ± 0.67–9.24 ± 1.023.82 ± 0.02–12.32 ± 0.31150.57 ± 10.34–821.02 ± 17.8312.65 ± 1.05–52.97 ± 2.81
% of sample above PL (/)0% (0/13)0% (0/13)0% (0/13)ND7% (1/13)

ParsleyRange−0.21 ± 0.07−12.83 ± 0.974.21 ± 0.13–13.29 ± (0.29)81.26 ± 7.00–605.50 ± 14.8719.32 ± 0.35–50.10 ± 1.22
% of sample above PL (/)0% (0/13)46% (6/13)0% (0/13)ND7% (1/13)

ChamomileRange−0.82 ± 0.025.37 ± 1.25–11.40 ± 1.326.12 ± 1.03–12.99 ± 0.48188.27 ± 3.72–581.30 ± 41.88925.23 ± 3.56–38.93 ± 3.14
% of sample above PL (/)55% (5/9)44% (4/9)66% (6/9)ND0% (0/9)

BasilRange0.13 ± 0.01–1.11 ± 0.079.01 ± 0.28–16.15 ± 2.531.44 ± 0.53–18.87 ± 1.46185.73 ± 13.02–1101.23 ± 49.4615.22 ± 1.31–112.19 ± 3.44
% of sample above PL (/)80% (8/10)90% (9/10)0% (0/10)ND50% (5/10)

SageRange−0.88 ± 0.0812.66 ± 1.54–21.76 ± 1.335.17 ± 0.03–156.24 ± 1.22204.15 ± 19.62–799.31 ± 36.8524.64 ± 0.53–58.78 ± 2.72
% of sample above PL (/)66% (6/9)100% (10/10)18% (2/11)ND36% (4/11)

OreganoRange−0.35 ± 0.029.39 ± 1.77–18.06 ± 2.323.99 ± 0.35–41.64 ± 2.20155.74 ± 4.67–420.52 ± 15.1913.33 ± 2.15–37.28 ± 0.71
% of sample above PL (/)9% (1/11)90% (10/11)18% (2/11)ND0% (0/11)

ThymeRange−0.63 ± 0.079.07 ± 0.34–23.52 ± 1.683.52 ± 0.22–13.16 ± 0.33120.75 ± 1.82–764.51 ± 39.1516.50 ± 1.29–146.67 ± 7.57
% of sample above PL (/)27% (3/11)91% (11/12)0% (0/12)ND38% (5/13)

% of all samples above PL29%64%12%ND19%

China set PL 20 mg·kg−1.
Concentration below Method Quantification Limit (MQL): 0.1, 1 mg·kg−1 for cadmium and lead, respectively.
: total number of samples analyzed for the metal; : number of samples above permissible limits (PL).
ND: set limits not determined for iron.

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