3.

人发成分分析标准物质（GBW09101）的分析结果

Analytical results and reference values of 14 elements content in hair (GBW09101)

Elements	Measured values (μg/g)	Standard value (μg/g)	RSD (%)
Cr	4.69	4.77	-1.68
Fe	70.4	71.2	-1.12
Mn	2.95	2.94	0.340
Al	13.6	13.3	2.25
Cd	0.095	0.095	0
Cu	22.3	23	-3.04
Zn	190	189	0.529
Ni	3.75	3.71	1.08
Se	0.56	0.58	-3.45
Pb	7.3	7.2	1.38
Ca	1 072	1 090	-1.65
Mg	107	105	1.90
Sr	4.29	4.19	2.39
As	0.60	0.59	1.69