Heavy metals

Present study (2018)

(Toho Lake in Benin)

Dimon et al. study (2014)

(Ahémé Lake in Benin)

Chouti et al. study (2011)

Porto-Novo lagoon in Benin)

Lafendi study (2017)

(Pawns’ fresh in Tlemcen

Cadmium

7 mg/Kg

-

0.012 mg/kg

Lead

60.75 mg/Kg

26 mg/kg

5.65 mg/kg

0.47 mg/kg

Copper

2100 mg/kg

-

0.16 mg/kg

0.019 mg/kg

Zinc

340 mg/Kg

170 mg/kg

7 mg/kg

0.38 mg/kg