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Table 7 Comparison of determined metals concentration (mg/kg, dry mass basis) with reported values

From: Levels of essential and non-essential metals in ginger (Zingiber officinale) cultivated in Ethiopia

Metal Concentration (mg/kg) Country Reference
Ca 1700 India (Devi et al. 2008)
2610 Nigeria (Ogunwandea and Olawore 2004)
2001-2543 Ethiopia This study
Mg 4210 Nigeria ( Ogunwandea and Olawore 2004)
9200 India (Devi et al. 2008)
2700-4094 Ethiopia This study
Mn 368 Nigeria ( Ogunwandea and Olawore 2004)
313 India (Devi et al. 2008)
184-401 Ethiopia This study
Fe 217 India (Devi et al. 2008)
19.4 Saudi Arabia (Alwakeel 2008)
41.8-89.0 Ethiopia This study
Zn 72.53 India (Devi et al. 2008)
38.5-55.2 Ethiopia This study
Ni 108 Nigeria (Obiajunwa et al. 2002)
5.61-8.40 Ethiopia This study
Co 0.32 Saudi Arabia (Al-Eed et al. 2002)
2.04-7.58 Ethiopia This study
Cu 4.47 India (Devi et al. 2008)
1.10-4.78 Ethiopia This study
Cr 0.47 Pakistan (Hashmi et al. 2005)
0.5 Pakistan (Hashmi et al. 2007)
6.02 − 10.8 Ethiopia This study
Cd 0.12 Nigeria (Aiwonegbe and Ikhuoria 2007)
0.07 Saudi Arabia (Al-Eed et al. 2002)
0.38-0.97 Ethiopia This study
Pb <0.021 Nigeria (Aiwonegbe and Ikhuoria 2007)
ND Ethiopia This study
  1. ND: Concentration of the tested heavy metal was below the method detection limit.