TK

Average monthly concentrations of heavy metals in suspended particles

Matter	Method	Unit		Monthly concentrations												Annual Average
Matter	Method	Unit		1	2	3	4	5	6	7	8	9	10	11	12	Annual Average
Cr	XRF	ng/m³	Xm	4.2	5.7	4.2	4.8	6.0	3.2	5.6	3.9	3.0	4.9	4.3	4.0	4.5
Cr	XRF	ng/m³	N													4.5
Mn	XRF	ng/m³	Xm	9.1	14.0	10.4	8.9	5.8	6.0	10.8	6.0	6.4	12.0	10.6	7.6	8.9
Mn	XRF	ng/m³	N													8.9
Ni	XRF	ng/m³	Xm	2.2	1.9	1.8	3.2	1.6	1.4	1.7	1.1	1.3	1.6	0.9	2.6	1.8
Ni	XRF	ng/m³	N													1.8
As	XRF	ng/m³	Xm	2.7	3.2	1.5	1.6	0.8	0.8	1.1	0.6	0.7	1.5	1.0	2.0	1.5
As	XRF	ng/m³	N													1.5
Cd	XRF	ng/m³	Xm	1.0	0.8	0.3	0.3	0.1	0.3	0.4	0.2	0.3	0.7	0.3	0.5	0.4
Cd	XRF	ng/m³	N													0.4
Pb	XRF	ng/m³	Xm	33.2	32.9	9.5	7.9	5.5	8.1	11.0	4.3	10.1	21.8	10.8	23.9	14.8
Pb	XRF	ng/m³	N													14.8