Sequential Extractions and Toxicity Potential of Trace Metals Absorbed into Airborne Particles in an Urban Atmosphere of Southwestern Nigeria

Table 5

Comparisons of heavy metal content (µgg⁻¹) in street dust in this study with other cities of the world.

Cities	Cd	Cr	Cu	Ni	Pb	Zn	Reference
Birmingham, UK	1.62	-	466.9	41	48	534	[16]
Hong Kong, China	21.8	-	24.8	-	93.4	1.68	[17]
Beijing, China	0.73	80.8	107.7	36.1	71.7	238.6	[18]
Egypt, Egypt,	2.98	58.7	102	38.5	307	1839	[6]
Mubi, Nigeria	0.67	-	25.06	-	207	121	[9]
Akure	2.46	4.83	12.63	6.24	112.45	6.08	This Study