Trend in heavy metals concentrations in particulate matter - data supplied by the regional monitoring stations
 

	Y ear	Chopok	Mochovce	Topoľníky	Milhostov	Starina	Stará Lesná	Liesek
	1995	-	18.7	21.3	29.0	18.1	18.8	10.3
Pb	1996	3.6	18.1	27.7	28.7	21.8	27.2	20.4
(m g per m3)	1997	4.2	17.4	20.5	31.1	17.5	30.8	20.2
	1995	-	9.0	8.8	9.1	6.0	5.5	8.7
Mn	1996	2.7	7.6	8.6	8.6	6.0	5.8	11.1
(ng per m3)	1997	3.3	7.1	7.0	8.2	4.0	5.1	16.5
	1995	-	17.2	3.9	7.6	2.9	5.1	2.3
Cu	1996	6.6	7.9	3.4	9.9	2.3	9.1	7.5
(ng per m3)	1997	1.8	3.6	4.6	5.6	3.4	7.6	6.0
	1995	-	0.7	0.8	1.2	0.9	0.7	0.4
Cd	1996	0.2	0.7	1.1	1.1	1.0	0.9	0.9
(ng per m3)	1997	0.2	0.4	0.6	0.7	0.5	0.6	0.6
	1995	-	221.3	33.5	79.7	20.1	43.9	23.0
Zn	1996	43.0	49.0	30.5	83.2	24.9	68.1	66.9
(ng per m3)	1997	6.6	23.9	25.9	37.8	21.5	85.7	33.5
	1995	-	190.1	7.1	45.5	10.3	2.4	10.5
Ni	1996	1.3	12.6	4.3	10.6	2.1	1.9	5.6
(ng per m3)	1997	3.1	2.5	0.8	2.4	1.6	1.3	4.1
	1995	-	3.2	5.5	2.0	2.0	1.6	2.3
V	1996	0.7	2.7	7.1	2.9	2.3	1.7	3.3
(ng per m3)	1997	0.6	2.2	3.5	2.5	1.6	1.4	2.5
	1995	-	1.1	2.1	1.4	1.8	0.9	1.3
Cr	1996	0.7	1.0	2.5	1.1	1.4	0.7	1.5
(ng per m3)	1997	1.7	0.8	1.3	1.0	1.0	0.7	2.6

                                                                                                                                                                                    Source: SHMÚ