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Table 1 Wavelengths for selected elements, LoD, and LoQ in aqueous extracts and in dry plants

From: Validation and measurement uncertainty evaluation of the ICP-OES method for the multi-elemental determination of essential and nonessential elements from medicinal plants and their aqueous extracts

Element Wavelength (nm) Plant aqueous extractsa Plant dry massb
LoD (mg L−1) LoQ (mg L−1) Target valuec(mg L−1) LoD (mg kg−1) LoQ (mg kg−1) Target valued(mg kg−1)
Cd 228.805 0.13 × 10−3 0.43 × 10−3 0.50 × 10−3 0.019 0.063 0.05 × 10−3
Cr 267.713 0.60 × 10−3 2.00 × 10−3 5.00 × 10−3 0.075 0.25 -
Cu 327.398 0.75 × 10−3 2.50 × 10−3 200 × 10−3 0.12 0.40 -
Fe 238.205 2.24 × 10−3 7.46 × 10−3 20 × 10−3 0.25 0.83 -
Al 396.153 1.59 × 10−3 5.30 × 10−3 20 × 10−3 0.20 0.67 -
Mg 258.213 0.60 × 10−3 2.00 × 10−3 - 0.11 0.37 -
Pb 220.355 0.29 × 10−3 0.97 × 10−3 1.00 × 10−3 0.043 0.14 0.5 × 10−3
Mn 257.611 0.25 × 10−3 0.83 × 10−3 5.00 × 10−3 0.030 0.10 -
Ni 231.604 0.57 × 10−3 1.90 × 10−3 2.00 × 10−3 0.13 0.43 -
Zn 213.856 1.52 × 10−3 5.06 × 10−3 - 0.22 0.73 -
As 193.759 0.30 × 10−3 1.00 × 10−3 1.00 × 10−3 0.045 0.15 -
  1. aCalculated for the extraction method (1 g of plant digested with nitric acid and perhydrol in 100 volumetric flask); bcalculated for the extraction method (0.5 g of plant extracted in water in 100 volumetric flask); c10% of the limit values according to Drinking Water Directive; d10% of the limit values according to the European Pharmacopeia.