2.

14种待测元素的线性回归方程及其相关系数

The linear regression equations and correlation coefficients of 14 elements

Elements	Regression equations	Correlation coefficients
Cr	Y=1.307 1X-0.002 3	0.999 8
Fe	Y=2.545 1X+0.002 9	1.000 0
Mn	Y=1.001 2X+0.001 2	0.999 9
Al	Y=0.953 7X+0.008 2	0.998 2
Cd	Y=0.322 3X-0.000 6	1.000 0
Cu	Y=1.501 7X+0.003 2	0.999 4
Zn	Y=1.532 2X-0.001 1	0.999 6
Ni	Y=1.030 3X-0.002 1	0.999 1
Se	Y=0.370 3X-0.000 9	0.998 9
Pb	Y=0.130 7X+0.001 9	1.000 0
Ca	Y=1.388 3X+0.002 5	1.000 0
Mg	Y=1.422 5X-0.012 1	1.000 0
Sr	Y=1.522 3X-0.011 6	0.999 9
As	Y=0.375 9X+0.000 2	0.998 7