Review Article

A Systematic Review of Heavy Metals of Anthropogenic Origin in Environmental Media and Biota in the Context of Gold Mining in Ghana

Table 5

Metals in food, sediment, and fish by region in Ghana.
(a)

ReferenceRegion/communitySource of pollutants studied As (mgkg−1) Hg (mgkg−1) As (mgkg−1) Hg (mgkg−1) As (mgkg−1) Hg (mgkg−1)

Ashanti region
Amasa 1975 [31]Obuasi and its environ
Soil19.30 (11.75–2875.0)
cassava1.09 (0.83–2.65)
Cocoyam2.16 (1.89–4.80)
Plantain0.62 (0.60–0.63)
Orange2.29
Sugar cane14.75 (14.54–14.96)
Palm tree2875 (2850–2900)
Fern 2729 (1100–4700)
Bananas13.46 (11.6–20.9)

Amonoo-Neizer et al. 1996 [19]Obuasi and its environ:
Villages up to about 2 km from Pompora Treatment Plant (PTP)Villages up to about 5 km from Pompora Treatment Plant (PTP)Villages up to about 9 km from Pompora Treatment Plant (PTP)
Soil24.76 (23.6–48.9)0.56 (0.4–0.7) 3.09 (2.7–3.7) 0.66 (0.66–1.2) 2.61 (2.4–3.3) 0.6
Plantain3.40 (3.1–4.3)0.78 (0.70–1.5) 1.49 (1.4–1.7) 0.6 (0.38–0.9) 1.02 (1.0–1.4) 0.11 (0.1–0.4)
Cassava2.6 (1.9–3.3) 1.1 (0.9–1.3) 1.21 (1.0–1.3) 0.40 (0.3–0.5) 1.04 (0.8–1.5) 0.2
Mud fish0.42 (0.3–0.9) 0.32 (0.2–0.8) 0.56 (0.5–0.7) 0.24 (0.1–0.4)
Fern23.9 (22.8–78.7) 2.57 (2.4–2.6) 3.79 (3.2–30.4)3.33 (1.8–4.4) 3.83 (2.8–27.8) 1.39 (1.2–4.1)
Elephant grass15.2 (14.3–15.6) 3.20 (3.0–3.4) 1.5 (0.9–2.1) 1.1 (0.7–1.5)
Villages up to about 4 km from Pompora Treatment Plant (PTP)Villages up to about 7 km from Pompora Treatment Plant (PTP)Villages > 9 km from Pompora Treatment Plant (PTP)
Soil3.66 (2.9–30.7) 0.74 (0.3–1.4)2.79 (2.4–3.6)1.34 (1.3–2.5) 2.52 (2.1–2.79) 0.56 (0.4–1.2)
Plantain1.53 (1.4–3.6) 0.13 (0.1–1.4) 1.35 (1.1–1.6) 0.25 (0.2–0.7) 0.9 (0.5–1.32)0.41 (0.3–2.1)
Cassava1.26 (1.1–2.5) 0.22 (0.2–1.8) 0.91 (0.8–1.1) 0.59 (0.5–0.8) 0.89 (0.7–1.0)0.34 (0.2–2.5)
Mud fish0.45 (0.3–2.7) 0.47 (0.2–2.0) 0.48 (0.4–1.2) 0.22 (0.2–0.6) 0.57 (0.5–0.6) 0.42 (0.4–0.9)
Fern5.35 (3.2–50.2) 3.61 (2.1–9.7) 3.53 (2.7–4.5) 1.7 (1.3–2.1) 2.33 (2.1–24.5)2.6 (2.0–8.0)
Elephant grass3.02 (2.0–27.4) 0.38 (0.2–1.8) 1.43 (1.41–1.57) 1.28 (1.0–1.9) 6.5 (6.0–8.0) 5.3 (4.7–5.9)

(b)

ReferenceRegion/communitySource of pollutants studied(mgkg−1)
AsHgFeMnCdZnCrCuNiPb

Ashanti region
Akabzaa et al. 2007 [24]Obuasi and its environ:Sediments
Communities within the operating area of AGC1332.26 (0.25–7591.58) 0.83 (0.28–3.02) 34406 (6220–50,180) 47.15 (2.76–167.24) 29.73 (8.87–80.35) mgkg−125.25 (3.65–80.46) 10.33 (3.28–23.11) 0.65
Communities immediately downstream2984.27 (190.38–5778.15) 2.02 (1.44–2.6) 19810 (13910–25710) 15.22 (12.72–24.55) 0.24102.13 (61.74–142.55)45.86 (41.44–50.27) 10.22 (8.36–12.08) 60.04 (4.71–115.37)
Fruits4.940.0231.710.3790.08316.550.550.072
Communities within the operating area of AGC4.94 (0.02–12.26) 0.023 (0.02–0.026) 1.71 (0.21–4.11) 0.38 (0.27–0.56) 0.09 (0.04–0.13) 16.55 (7.4–24.30) 0.55 (0.40–0.84) 0.072

Adomako et al. 2008 [74]Sediment in Subin River in Kumasi/Ashanti regionSediments3.43 (2.34–7.65) 1.06 (0.28–1.42) 18.50 (14.40–98.30)30.57 (18.50–136.40) 3.32 (3.11–12.63)

Golow et al. 1996 [71]Obuasi mining areaTop soil33.3 (25–45)

Golow et al. 1996 [71]Obuasi mining areaFish0.45 ± 0.120.47 ± 0.05

Nyarko et al. 2006 [34]Obuasi gold mining areaLichens60.95 (6.80–196.0) 6.60 (1.80–14.0)

(c)

ReferenceRegion/communitySource of pollutants studied Sb (mgkg−1) V (mgkg−1) Th (mgkg−1)

Ashanti region
Amonoo-Neizer and Amekor 1993 [14]Obuasi areaUncooked food
cassava2.55 (1.85–3.25)
Cocoyam2.26 (1.36–3.18)
Plantain3.43 (2.36–4.5)
Pepper2.96 (2.05–3.87)
Orange3.46 (3.10–3.91)
Beans0.99 (1.21–0.77)
Pear1.59 (0.97–2.21)
Cooked food
Cassava2.67
Plantain3.39
Fufu2.37
Oil Palm fruit3.03
Star grass6.67
Elephant grass4.85

Amonoo-Neizer and Amekor 1993 [14]Kumasi areaUncooked food
cassava1.03 (0.84–1.87)
Cocoyam0.97 (0.81–1.13)
Plantain1.10 (0.85–1.35)
Pepper0.58 (0.5–0.66)
Orange0.85 (0.45–1.25)
Beans0.52 (0.42–0.62)
Pear0.76 (0.9–0.62)
Cooked food
Cassava1.91
Plantain3.03
Fufu1.4
Oil Palm fruit3.5
Tobacco2.14
Cocoa2.44
Star grass6.67
Elephant grass4.85

Nyarko et al. 2006 [34]Obuasi gold mining areaLichen27.63 (2.90–74.80) 1.08 (0.13–4.44)

Serfor-Armah et al. 2006 [28]Prestea and its environSediment12.46 (8.50–90.40)

Hayford et al. 2009 [30]Tarkwa and its environsSoil2.98 188.40
Cassava0.03 0.8
Plantain0.02 0.42

Boamponsem et al. 2010 [29]AngonabengSediment38.9 133 1.64
BediabewuSediment309 417 15.72

(d)

ReferenceRegion/
community
Source of pollutants studied As Hg Fe Mn Cd Zn Cr Cu Ni Pb

Western region
Donkor et al. 2006 [33]Lower Pra river basinRiver sediments25.89 (6.52–57.32) mgkg−1
Soil75.61 (3.40–202.32) mgkg−1

Serfor-Armah 
et al. 2006 [28]
Prestea and its environSediments2261.8 (942–10,200) mgkg−1
Essumang et al. 2007 [16]Food crops from Efuantah, Nsuta and Tamso in Tarkwa districtCocoyam

Water cocoyam
146 mgkg−1

383.5 mgkg−1
3 mgkg−1

3.5 mgkg−1
43 mgkg−1

181.5 mgkg−1

Hayford et al. 2009 [30]Tarkwa and its environsSoil0.7 mgkg−10.25 mgkg−138.42 mgkg−10.72 mgkg−166.39 mgkg−1
Cassava0.43 mgkg−10.41 mgkg−126.62 mgkg−10.44 mgkg−133.61 mgkg−1
Plantain0.34 mgkg−10.36 mgkg−118.87 mgkg−12.2 mgkg−15.44 mgkg−1

Boamponsem  et al. 2010 [29]Sediments in 5 streams in Tarkwa gold mining districtSediments
Angonabeng5.41 mgkg−10.212 mgkg−136468 mgkg−10.658 mgkg−113 mgkg−1
Bediabewa13.4 mgkg−10.054 mgkg−1365 mgkg−10.312 mgkg−120.1 mgkg−1
Mile 7 spring1.65 (1.15–2.22) mgkg−155.9 (42.1–69.7) mgkg−12.92 mgkg−1
Teberebie spring 21.94 (0.94–2.94) mgkg−10.06 mgkg−1189.2 (134.3–244.1) mgkg−10.20 mgkg−1230.2 mgkg−1
Teberebie spring 31.06 (0.79–1.33) mgkg−10.01 mgkg−1117770 mgkg−10.43 mgkg−11201 mgkg−1

Oppong et al. 2010 [32]Soil, sediments and fish from the River Pra Basin at Daboaso, Beposo, Twifo Praso and Twifo Mampong
Daboase
Sediment0.707 mgkg−1
Soil0.075 mgkg−1
Fish0.166 mgkg−1
Beposo
Sediment0.575 mgkg−1
Soil0.145 mgkg−1
Fish0.153 mgkg−1

Adokoh et al. 2011 [70]Sediments in Pra Estuary at ShamaSediment0.016 mgkg−10.017 mgkg−1

Koranteng Addo et al. 2011 [84]Abandoned open pit in the Tarkwa mining districtSand53151.28 (145–119,166) mgkg−134.45 (26.67–1595) mgkg−121.06 (4.17–43.17) mgkg−112 (6.5–56.17) mgkg−1
Clay71013.08 (67,000–134,833.3) mgkg−156.76 (36.16–147.3) mgkg−120.35 (15–27.67) mgkg−113.56 (9.17–21.83) mgkg−1

(e)

ReferenceRegion/
community
Source of pollutants studied As Hg Fe Mn Cd Zn Cu Al Pb

Central region
Golow et al. 1996 [71]Dunkwa-on-Offin
Top soil (0–5 cm deep)153.75 mgkg−1
Cassava leaves15.63 mgkg−1
Cassava flesh6.5 mgkg−1
Golow and Adzei 2002 [75]Dunkwa-on-Offin
Top soil (0–5 cm deep)41.75 mgkg−1
Cassava leaves13.75 mgkg−1
Cassava flesh100 mgkg−1
Dankwa and Biney 2005 [46]Five sites in Offn river basin: Kaniago, Buabuasin, Kubi, Baadoa, Twifo-PrasoBottom sediment<500 mgkg−1<200 mgkg−115.75 × 106 mgkg−11800 mgkg−1<200 mgkg−112900 mgkg−1<200 mgkg−1
Fish fauna
Brycinus nurse R<300 mgkg−1320 mgkg−13760 mgkg−1500 mgkg−1<100 mgkg−12560 mgkg−1300 mgkg−1250 mgkg−1
Chrysichthys nigrodigitatus L<300 mgkg−1230 mgkg−13310 mgkg−1570 mgkg−1<100 mgkg−1570 mgkg−12500 mgkg−1440 mgkg−1
Tilapia zillii G<300 mgkg−160 mgkg−12660 mgkg−11350 mgkg−1<100 mgkg−11820 mgkg−170 mgkg−1
Donkor et al. 2006 [33]Offin river basinRiver sediments23 (2.73–49.86) mgkg−1
Soil263.79 (1.56–2146.96) mgkg−1
Boamponsem et al. 2010 [29]KakumSediments1.31 mgkg−1777 mgkg−13.21 mgkg−115836 mgkg−1
Adokoh et 
al. 2011 [70]
Benya Lagoon-Elimina; Fosu Lagoon-Cape Coast; Narkwa Lagoon-near Saltpong BeachFosu Lagoon
Sediments0.529 mgkg−10.014 mgkg−10.526 mgkg−156.453 mgkg−1
Narkwa Lagoon
Sediments0.603 mgkg−10.008 mgkg−1 0.041 mgkg−117.925 mgkg−1
Benya Lagoon
sediment60.407 μgg−1
Bentum et al. 2011 [86]Fosu LagoonSediments1150 mgkg−120.9 mgkg−126.4 mgkg−12230 mgkg−128.1 mgkg−1

(f)

ReferenceRegion/communitySource of pollutants studied As Hg Fe Mn Cd Zn Cr Cu Ni Pb

Greater Accra region
Tay and Kortatsi 2008 [47]Shell fish20.92 (9.68–35.04) mgkg−122.08 (7.27–22.16) mgkg−10.26 (0.11–0.34) mgkg−113.52 (6.55–16.09) mgkg−11.36 (0.87–7.73) mgkg−10.084 (0.08–0.44) mgkg−1
Fin fish14.95 (0.75–23.18) mgkg−10.036 (0.03–19.37) mgkg−10.081 (0.08–0.14) mgkg−111.13 (6.2–19.19) mgkg−10.244 (0.1–14.18) mgkg−10.754 (0.9–1.09) mgkg−1
Tay et al. 2010 [80]Sakumo II and Muni lagoonsSediment3208.6 (563.2–7486.9) mgkg−1298.21 (63.7–668.2) mgkg−10.70 (<0.25–0.88) mgkg−1155.2 (10.4–155.2) mgkg−137.4 (3.79–37.4) mgkg−1