Table 2 Range, mean and standard deviation of organophosphorus pesticides in soil of cocoa farms from Dormaa West District, Ghana
Sites | Nkrankwanta (S1) | Diabaa (S2) | Krakrom (S3) | Kwakuanya (S4) | Total means | US MRLs | ||||
|---|---|---|---|---|---|---|---|---|---|---|
Pesticides (mg/kg) | Range | Mean ± SD | Range | Mean ± SD | Range | Mean ± SD | Range | Mean ± SD | Mean ± SD |  |
Chlorpyrifos (mg/kg) | 0.03–0.06 | 0.04 ± 0.02 | ND–0.04 | 0.03 ± 0.01 | ND–0.01 | 0.01 ± – | ND–0.03 | 0.03 ± – | 0.03 ± 0.01 | 0.03 |
Profenofos (mg/kg) | ND–0.02 | 0.02 ± – | ND–0.04 | 0.04 ± – | ND–0.04 | 0.04 ± – | ND–0.02 | 0.02 ± – | 0.03 ± 0.01 | 0.05 |
Pirimiphos-methyl (mg/kg) | ND–0.05 | 0.04 ± 0.01 | ND–0.02 | 0.02 ± – | ND–0.02 | 0.02 ± – | ND–0.01 | 0.01 ± – | 0.02 ± 0.01 | 0.03 |