81x6
EDWARD I
I
t
14
-
I
1
I
I
L.
KING
I
-+ 1
ili h
.
-I
0 L
-
-
E?.
c z
0 w
0
e w
P w
I
I
. _
,
!1 -
i"
I
I
ZOO0
4000
1600 F R E Q U E N C Y IN
Fig 1 -1nfrdred
1200
800
650
A
4000
2000
.
Y
spectia of [Ln(ent 1 3 ( H i ) . ' x lo-'. Fig. 1.--\'dues of AA/(Cr+++)(HCrO,-) werszis l / ( H + ) ; wave length = 700 m p ; ional concentration = 2.0: x, and 2.0 X values at (H+) = 5.0 X 10-3, 8.0 X from Table I (each point is average values for series) ; 0 ant1 9 distinguish cxpcritnents using different chromium( 111) perchlorate :,tock solutions 0
The direct proportionality between the absorhiicy enhancement and the concentration of chromium(III), the reagent in excess, pcrsists t o the highest concentrations of ~
~
~~~
1 1 3 ) C . P u s t n i u i a n d l