Table 4.

Content of heavy metals in aerial parts and root of selected plants collected in railway junction Iława Główna depending on place (milligrams per kilogram dry weight)

Heavy metals	Siding						Loading		Platform		Cleaning
	Daucus carota		Sonchus oleraceus		Pastinaca sativa		Sonchus oleraceus		Taraxacum sp.		Daucus carota		Taraxacum sp.		Taraxacum sp.
	Ap	R	Ap	R	Ap	R	Ap	R	Ap	R	Ap	R	Ap	R	Ap	R
Lead	13.39	68.42	11.69	74.81	7.49	80.75	13.41	55.26	19.44	29.98	11.29	32.91	14.97	43.69	14.97	43.69
Cadmium	0.73	1.5	0.73	1.32	0.32	1.43	1	1.23	0.85	0.85	1.18	1.62	1.00	1.11	1.00	1.11
Copper	22.12	62.26	22.94	85.9	18.92	44.83	29.04	39.82	123.19	154.43	46.89	72.91	53.88	107.42	53.88	107.42
Zinc	100	243	122	260	85	248	224	153	102	120	192	153	158	203	158	203
Mercury	0.03	0.16	0.03	0.1	0.03	0.090	0.026	0.048	0.033	0.040	0.046	0.107	0.118	0.406	0.118	0.406
Iron	4,695	11,644	3,528	15,062	2,985	8,590	2,075	5,199	18,819	20,361	5,119	9,178	5,274	12,405	5,274	12,405
Cobalt	0.89	2.57	0.64	3.3	0.55	2.33	0.69	2.38	2.65	2.77	0.81	1.65	0.91	2.36	0.91	2.36
Chromium	19	142	20	226	36	92	35	37	57	72	25	67	26	110	26	110
Molybdenum	2.25	1.8	2.14	2.38	2.07	1.06	0.97	1.1	2.01	3.92	1.61	1.6	4.53	2.12	4.53	2.12

AP aerial parts, R roots