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

Table 6

Health risk from metals in dust for adults and children at various sampled sites of Akure.

			Dinh	Ding	Dder	HQih	HQin	HQder	HI = ∑HQ
AKEX	Pb	Child							0.1326996
		Adult							0.0145868
	Cr	Child							0.0362402
		Adult				0.0005883	0.0038137		0.0051628
	Cd	Child				-	0.0698959	0.0008504	-
		Adult						0.0011952	0.0012712
AKOA	Pb	Child						0.0002938	0.145162
		Adult						0.0004129	0.0159567
	Cr	Child				0.0001193	0.0407014	0.000619	0.0414396
		Adult				0.0006727	0.0043609	0.00087	0.0059035
	Cd	Child					0.0398466	0.0004848	0.0403315
		Adult				-			-
AKOB	Pb	Child		0.0004309			0.123128	0.0002497	0.1233811
		Adult					0.0131923	0.0030705	0.0162821
	Cr	Child					0.0225973	0.0003437	0.0230071
		Adult				0.0003735	0.0024211	0.0003864	0.003181
	Cd	Child					0.0423452	0.0005152	0.0428605
		Adult				-		0.0007241	-
AKAL	Pb	Child					0.1619413	0.0003284	0.1622742
		Adult					0.0173509	0.0004615	0.0178378
	Cr	Child					0.0217425	0.0003307	0.0221368
		Adult					0.0023295	0.0004647	0.0031536
	Cd	Child					0.0539836	0.0006568	0.0546405
		Adult				-		0.0009231	-
AKOR	Pb	Child		0.0003407			0.0973526	0.0001974	0.0975528
		Adult					0.0104306	0.0002775	0.0107233
	Cr	Child					0.0219397	0.0003337	0.0223377
		Adult				0.0003626	0.0023507	0.000469	0.0031823
	Cd	Child					0.062663	0.0007624	0.0634256
		Adult				-		0.0010715	-
AKBR	Pb	Child					0.0222059		0.0222515
		Adult					0.0023792		0.002446
	Cr	Child					0.0197699	0.0003007	0.0201285
		Adult				0.0003267	0.0021182	0.0004226	0.0028675
	Cd	Child					0.0200548	0.000244	0.0202989
		Adult				-		0.0003429	-