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. 2005 Jul 29;6(8):708–718. doi: 10.1631/jzus.2005.B0708

Table 4.

Concentration of fallen dust components (major, minor and trace elements) on southern wall of ferrosilicon factory from May 2000 to August 2001

Date	Fallen dust (g/(m²·month))	Concentration
Date	Fallen dust (g/(m²·month))	SiO₂ (%)	Al₂O₃ (%)	Fe₂O₃ (%)	CaO (%)	MgO (%)	C (%)	K₂O (%)	Na₂O (%)	Pb (×10⁻⁶)	Co (×10⁻⁶)	Ni (×10⁻⁶)	Mn (×10⁻⁶)
May 2000	14.40	95.20	0.45	0.67	0.21	0.45	0.26	0.98	0.22	15.0	60.0	9.35	510
Aug. 2000	13.90	94.80	0.41	0.60	0.24	0.50	0.33	1.00	0.55	13.5	36.3	9.30	470
Nov. 2000	14.20	92.30	0.37	0.70	0.30	0.60	0.25	1.20	0.30	17.6	51.3	−10.35	465
Feb. 2001	15.20	93.85	0.34	1.43	0.18	0.48	0.20	0.60	0.25	17.7	63.3	8.70	480
May 2001	14.20	92.30	0.30	0.85	0.24	0.40	0.18	0.50	0.26	18.0	66.7	8.90	395
Aug. 2001	14.00	93.00	0.36	1.00	0.20	0.50	0.20	0.55	0.29	16.3	66.0	9.40	410
Mean	14.32	93.60	0.37	0.88	0.23	0.49	0.24	0.81	0.31	16.4	57.3	9.30	455