concentration. The target set by the Dutch government for unpolluted soil is20–50μg/kg. Therefore, as all of the soils sampled were above the soils were considered to be 50μg/kg, polluted by PAHs. As there are many open e-waste burning sites in Guiyu, it was postulated that PAHs would be transported atmospherically by wind and subsequently deposited on land. Concentration of PAHs in the soil collected is given in table 6.4. Table 6.4Concentration of PAHs in soil dry wt) (μg/kg USEPA PAHs Burnt plastic Printer Reservoir roller Two-ring Naphthalene 45.4 294 27.3 Three-ring Acenaphthylene ND 14.2 0.7 Acenaphthene 6.6 64.6 7.5 Fluorene 9.7 36.5 4.0 Phenanthrene 58.8 131 23.1 Anthracene 8.0 9.7 9.7 2.1 Four-ring Fluoranthene 39.1 16.4 9.6 Pyrene 41.0 27.3 8.5 Benzo(a)anthracene 23.7 ND 1.6 Chrysene 48.3 ND 4.3 Five-ring Benzo(b +k) 56.5 ND 4.9 fluoranthene Benzo(a)pyrene 22.7 ND ND Dibenz(a,h)anthracene 4.5 ND ND Six ring 29.1 ND ND Benzo(g,h,i)perylene 34.5 ND ND 16 PAHs 428 593 93.7 ∑ Carcinogenic 185 ND 10.8 ∑7 PAHsa % Carcinogenic PAHs 43.2 ND 11.6
concentration. The target set by the Dutch government for unpolluted soil is20–50μg/kg. Therefore, as all of the soils sampled were above 50μg/kg, the soils were considered to be polluted by PAHs. As there are many open e-waste burning sites in Guiyu, it was postulated that PAHs would be transported atmospherically by wind and subsequently deposited on land. Concentration of PAHs in the soil collected is given in table 6.4. Table 6.4Concentration of PAHs in soil (μg/kg dry wt) USEPA PAHs Burnt plastic Printer roller Reservoir Two-ring Naphthalene 45.4 294 27.3 Three-ring Acenaphthylene ND 14.2 0.7 Acenaphthene 6.6 64.6 7.5 Fluorene 9.7 36.5 4.0 Phenanthrene 58.8 131 23.1 Anthracene 8.0 9.7 9.7 2.1 Four-ring Fluoranthene 39.1 16.4 9.6 Pyrene 41.0 27.3 8.5 Benzo(a)anthracene 23.7 ND 1.6 Chrysene 48.3 ND 4.3 Five-ring Benzo(b +k) fluoranthene 56.5 ND 4.9 Benzo(a)pyrene 22.7 ND ND Dibenz(a,h)anthracene 4.5 ND ND Six ring 29.1 ND ND Benzo(g,h,i)perylene 34.5 ND ND ∑ 16 PAHs 428 593 93.7 ∑7 Carcinogenic PAHsa 185 ND 10.8 % Carcinogenic PAHs 43.2 ND 11.6
51570689-E-Waste-Management.docx