Chemometric Study of Trace Elements in Hard Coals of the Upper Silesian Coal Basin, Poland

Table 2

Values of basic physical and chemical parameters of hard coals of the Upper Silesian Coal Basin (USCB).

Zone of the USCB	Coal mine no.	Total moisture, 𝑊^𝑎 [%]	Ash, 𝐴^𝑎 [%]	Volatiles, 𝑉^𝑎 [%]	Heat of combustion, 𝑄𝑠^𝑎 [kJ/kg]	Calorific value, 𝑄𝑖^𝑎 [kJ/kg]	Carbon, C𝑡^𝑎 [%]	Total sulfur, S𝑡^𝑎 [%]	Pyritic sulfur, Sp^𝑎 [%]
Northern	1	5.01	15.36	28.53	28,681	23,059	64.37	0.73	0.51
	2	5.81	14.14	32.13	25,663	22,989	64.12	0.82	0.44
	3	5.36	9.40	31.03	27,650	25,522	69.24	0.67	0.43
	4	4.30	15.27	29.68	26,605	24,350	67.41	0.71	0.36
	5	5.13	7.52	32.72	28,522	25,720	68.32	0.88	0.41
	6	4.32	10.24	33.54	27,884	25,627	69.39	0.75	0.29
	7	2.24	7.13	31.30	30,339	28,247	75.89	0.24	0.03
	8	2.44	8.22	31.14	29,954	27,738	74.23	0.53	0.13
	9	4.86	8.90	32.26	28,056	26,317	70.85	0.73	0.33
Southern	10	2.35	8.07	32.05	30,101	27,954	74.53	0.62	0.08
	11	1.42	6.90	25.22	33,107	29,569	80.75	0.66	0.09
	12	1.40	15.89	29.07	25,508	26,688	69.89	0.58	0.08
	13	1.74	14.42	27.76	27,350	24,339	70.62	0.59	0.08
	14	2.75	15.79	29.55	27,300	24,348	66.19	0.63	0.10
	15	2.38	14.48	29.91	28,598	25,550	68.91	0.77	0.19
Eastern	16	11.41	15.51	31.15	22,119	17,658	55.29	2.15	1.25
	17	5.74	18.86	28.86	23,425	20,734	58.19	1.20	0.60
	18	4.85	26.38	26.26	21,834	19,854	54.43	0.76	0.39
	19	5.66	21.02	28.59	23,387	19,990	56.65	1.09	0.60
	20	2.80	20.25	26.51	26,503	22,889	62.16	0.64	0.24
	21	7.03	20.71	27.83	22,531	19,925	56.31	1.00	0.62
	22	2.78	25.59	25.04	23,853	21,764	59.12	0.50	0.22
	23	11.97	11.72	29.76	23,298	19,109	56.69	1.92	1.41
	24	6.94	22.43	27.54	22,009	17,929	54.91	1.40	1.02
Western	25	1.95	18.19	26.47	27,636	23,807	67.80	0.88	0.41
	26	1.79	21.21	25.91	26,330	23,508	64.66	0.74	0.32
	27	2.56	23.95	30.84	26,306	23,872	60.66	1.15	0.60
	28	1.74	19.46	27.03	27,116	24,471	65.84	1.05	0.49
	29	2.44	7.84	32.63	30,616	28,510	76.25	0.89	0.56
	30	1.64	15.25	29.88	28,772	26,259	71.55	0.71	0.18
	31	1.39	11.54	30.47	30,399	28,505	75.40	0.62	0.18
Central	32	6.72	6.20	30.83	28,094	24,246	70.91	0.61	0.40
	33	3.68	22.54	27.43	23,912	21,503	58.86	0.83	0.53
	34	3.50	17.02	33.28	26,744	23,915	64.75	0.78	0.43
	35	3.32	13.83	29.35	27,932	25,439	69.00	0.56	0.32
	36	4.27	15.35	29.07	26,384	24,736	65.44	0.60	0.33
	37	3.49	11.13	29.05	28,218	24,855	70.87	0.68	0.40
	38	2.67	13.30	30.27	28,302	25,492	69.34	0.39	0.16
	39	2.66	9.77	30.26	30,101	27,420	76.05	0.72	0.48
	40	2.15	8.53	28.33	31,484	29,395	77.24	0.57	0.23
	41	2.85	17.56	26.93	26,992	24,534	66.82	0.79	0.28
	42	2.82	17.05	27.15	26,820	24,474	66.18	0.57	0.29
	43	3.40	7.66	31.62	29,988	27,192	74.93	0.57	0.24
	44	1.90	11.04	30.64	30,229	27,635	73.60	0.67	0.35