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Table 4 An indication of the magnitude of exposure to selected detected hazardous pesticides based on the estimate of per capita consumption/day compared to WHO’s Acceptable daily intake ADI and Acute reference dose (ARfD) limits. Data are based on recommended per capita consumption of 0.7 g/person/annum for leaf vegetable consumption in Africa (see WHO/GEMS/FOODS, 2006; Alla et al. 2015). Data on (ADI) and (ARfD) obtained from WHO online database (WHO, 2017)

From: Cabbage or ‘pesticide’ on the platter? Chemical analysis reveals multiple and excessive residues in African vegetable markets

Active ingredient Range of detected quantity (mg/kg) Overall mean detected quantity (mg/kg) Codex
Alimentarius
MRLs (mg/kg)
aPercapita consumption/day
(mg/kg)
bAcceptable daily intake (ADI)
(mg/kg bw/day)
bAcute reference dose (ARfD)
(mg/kg bw)
Acephate 0.05–0.89 0.60 0.01 0.0042 0.03 0.1
Chlorpyriphos 0.02–0.16 0.09 0.01 0.00063 0.01 0.1
Methamidophos 0.02–2.90 0.33 0.01 0.00231 0.004 0.01
Methomyl 0.01–0.67 0.19 0.01 0.00133 0.02 0.02
Chlorfenapyr 0.01–0.39 0.21 0.01 0.00147 0.03 0.03
  1. aBased on recommended per capita consumption of 0.7 g/person/annum (WHO/GEMS/FOODS) (2006) for leaf vegetable consumption in Africa (see also Alla et al. 2015)
  2. bData on (ADI) and (ARfD) obtained from WHO online database based on 60 kg average body weight (bw) (WHO/GEMS/FOODS) (2006; WHO, 2017)