48
Table 1 .
Reliability of the method of chromatographic separation
and colorimetric determination of microgram quantities
of ginc.
Column
Nos
Aliquot
added
20
analysed
200
OL
1
2
3
4
1.20
1.47
1.8
1.56
5
1.40
6
2.00
7
1.47
8
2.11
9
2.06
190
1.38
11
12
Mean
bin.
.
200
Ol
(%)
1.66
Sum of squared deviations from the mean
Variance
2.06
1.39
(s“)
1.18
2108
Standard deviation
Standard error
(Sx~)
(s)
328
(sz)
Coefficient of variation
2095
(C,)
2198