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Table 1 Content and limit of detection (ppm) of micro and macro-elements in Nymphaea lotus leaves

From: Ethanolic extract of Nymphaea lotus L. (Nymphaeaceae) leaves exhibits in vitro antioxidant, in vivo anti-inflammatory and cytotoxic activities on Jurkat and MCF-7 cancer cell lines

Elements Mean ± 3σ (ppm) Limit of detection LOD (ppm)
Mg 11,433 ± 0.43 1100
Al 7733 ± 0.01 95
Si 38,403 ± 0.036 160
P 2959 ± 97 10
S 3225 ± 68 13
K 21,500 ± 0.021 16
Ca 13,800 ± 0.009 17
Mn 414 ± 28 5
Fe 5859 ± 87 12
Cu 6 ± 3 2
Zn 33 ± 3 1
Rb 28 ± 1 1
Sr 19 ± 1 1
Y 2 ± 1 1
Zr 9 ± 2 1
Nb 3 ± 2 1
Ag 40 ± 8 2
Cd 16 ± 9 2
Pb 2
Th 15 ± 5 2
  1. Macro and micro-elements content were measured on pellets of N. lotus leave samples (32 mm diameter × 3 mm thickness) using energy dispersive x-ray fluorescence (ED-XRF) spectroscopy (SPECTRO X-Lab 2000 spectrometer). Measurements were done in triplicate and data presented are expressed in ppm and are mean value ±3σ. The limit of detection for light elements (Si, Al, Mg, and Na) was in the range of 25–50 ppm and 1–5 ppm for heavy metals