4.

肺癌组与对照组样品中各元素的平均值（μg/g）

The average contents of 14 elements in the samples from the lung cancer group and normal group (μg/g)

Elements	Lung cancer group (n=16)				Normal group (n=5)
	Hair	Serum	Urine		Hair	Serum	Urine
Cr	0.66	30.17	0.04		0.73	31.02	0.02
Fe	13.82	1428	0.30		8.17	1112	0.37
Mn	0.71	4.21	0.01		1.69	4.49	0.01
Al	7.74	19.72	0.19		8.82	11.59	0.24
Cd	0.20	0.24	0.01		0.22	0.26	0.01
Cu	8.92	16.88	0.07		7.98	11.01	0.03
Zn	99.00	9.92	1.82		120.17	11.77	0.49
Ni	0.68	9.94	0.06		0.82	8.12	0.02
Se	1.21	69.12	0.01		8.95	73.57	0.02
Pb	3.49	11.20	0.05		2.99	8.19	0.02
Ca	689.02	88.29	5.33		701.36	127.94	8.17
Mg	68.08	20.05	6.20		112.38	26.92	11.34
Sr	2.30	21.98	0.02		5.21	18.99	0.02