Processing kodak motion picture films, module 3 analytical procedures

APPENDIX B
Effect of Temperature in Spectrophotometric
Determination of RA-1 in Reversal Color Developer
A. Preparation of Standards
A stock standard solution was prepared by dissolving the
required constituents of a Reversal Color Developer in a
1 liter volumetric flask and diluting to the mark with reagent
water at room temperature.
1. Five 250 mL beakers were each filled with
approximately 200 mL of 1.0 N sulfuric acid.
2. Each beaker was maintained at the following
temperatures:
Beaker Temperature (°C)
1 15.1
2 20.8
3 24.8
4 30.0
5 34.5
B. Analysis of Standards
1. A sample of the stock standard solution was analyzed
by the method described in the preceding Procedure
using the 1.0 N sulfuric acid from Beaker 1 in step 1 of
,A. Preparation of Standards.
2. This procedure was repeated four times using the
remaining four beakers of temperature controlled
1.0 N sulfuric acid.
3. Table of Data gathered from Analysis of Standards.
Beaker Abs 725 RA-1 (mg/L)
1 0.676 92.52
2 0.616 83.92
3 0.630 85.92
4 0.875 121.03
5 0.797 109.86
4. Graph of Temperature Dependence for RA-1 in
Reversal Color Developer Determination.
F002_1127AC
Processing KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03 5
Absorbance
0.950
0.900
0.850
0.800
0.750
0.700
0.650
0.600
0.550
0.500
0.0
5.0
4
10.0
3
2
y = −5E−05x + 0.0051x − 0.1761x + 2.5859x −13.107
R = 1
15.0
2
20.0
25.0
Temperature (deg C)
30.0
35.0
40.0