Anal. Chem. 1980, 52,2237-2238
Table I. Precision of Boron Determinationsa [H3 BO 3 3 , M x lo6
3.3
= 9.
b
3C
lo6
M X
3.4 8.4 84
8.3 83 a
s,c
x,b
Mx
= xxi/n.
c s =
lo6
0.2 0.2 1
[ x ( ~ x- i ) 2 / ( n - 1)11'*
Table 11. Comparison of Boron Determinations sample a
amt B added, M x lo6
D-1
