Processing kodak motion picture films, module 3 analytical procedures
Processing kodak motion picture films, module 3 analytical procedures Processing kodak motion picture films, module 3 analytical procedures
2 Processing KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03
Potentiometric Determination of Ferrocyanide in Process ECN Ferricyanide Bleach and Ferrocyanide Stock Solutions ECN-0020-01 Process ECN-2 ECP-2D VNF-1/LC RVNP Formulas SR-29 — — — INTRODUCTION Ferrocyanide is determined by an oxidation titration with standardized sulfato cerate in an acid solution. The reaction is: Ce +4 + Fe(CN) 6 4- → Ce +3 + Fe(CN) 6 3- The endpoint of the titration is detected potentiometrically. The electrodes used for the titration are a platinum indicator electrode and a double junction reference electrode. Results are reported in terms of potassium ferrocyanide trihydrate, K 4Fe(CN) 6 3H 2O. This method requires handling potentially hazardous chemicals. Consult the Material Safety Data Sheet for each chemical before use. MSDS's are available from your chemical supplier. Sample Mean (g/L K 4 Fe(CN) 6 3H 2 O) N PRECISION AND BIAS Repeatability Standard Deviation, 1sr and 95 Percent Confidence Estimate (not including Bias) Repeatability standard deviation is an estimate of the variability one trained analyst should be able to obtain under favorable conditions (analyzing a sample, with one instrument, within one day). The 95 percent confidence estimate (calculated using the repeatability standard deviation) around a single test result will include the mean value 95 percent of the time. To obtain the repeatability data, a single skilled analyst performed three (3) replicates on each of the following solutions during methods development. 1. A “fresh” ferricyanide bleach prepared with all components at their respective “working tank” aim concentrations. 2. The same “fresh” solution as in number 1, above, reanalyzed after making an analytically weighed, standard addition of 4.9452 g/L K4Fe(CN) 6 3H2O. 3. A “seasoned” ferricyanide bleach analyzed potentiometrically as received, at 3.5057 g/L K4Fe(CN) 6 3H2O. 4. The same “seasoned” solution as in number 3, above, reanalyzed after making an analytically weighed, standard addition of 1.0280 g/L K4Fe(CN) 6 3H2O. K 4 Fe(CN) 6 3H 2 O Repeatability Standard Deviation, 1s r (g/L K 4 Fe(CN) 6 3H 2 O) 95 Percent Confidence Estimate g/L K 4 Fe(CN) 6 3H 2 O) “Fresh” “Fresh” plus 0.073 3 0.0037 ± 0.016 Standard Addition “Seasoned”, 5.000 3 0.0024 ± 0.010 As Received “Seasoned” 3.506 3 0.0002 ± 0.001 plus Standard Addition 4.526 3 0.0023 ± 0.010 Processing KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03 1
- Page 1 and 2: ©Eastman Kodak Company, 1999 Proce
- Page 3 and 4: ECP-2-1101 Ferrocyanide in Ferricya
- Page 5 and 6: 3 Analytical Procedures for Chemica
- Page 7 and 8: Spectrophotometric Determination of
- Page 9 and 10: Potentiometric Determination of Bro
- Page 11 and 12: PROCEDURE B For Seasoned Tank and R
- Page 13 and 14: Potentiometric Determination of Bro
- Page 15 and 16: APPARATUS All volumetric glassware
- Page 17 and 18: Potentiometric Determination of Bro
- Page 19 and 20: APPARATUS All pipettes and volumetr
- Page 21 and 22: Potentiometric Determination of Amm
- Page 23 and 24: PROCEDURE A. Sample Treatment 1. Pi
- Page 25 and 26: Titrimetric Determination of Buffer
- Page 27 and 28: Buffering Capacity Determination of
- Page 29 and 30: Titrimetric Determination of EASTMA
- Page 31 and 32: VISUAL TITRATION STATISTICS Repeata
- Page 33 and 34: Back-Extraction of the Developing A
- Page 35 and 36: Potentiometric Determination of Fer
- Page 37 and 38: Recovery Recovery is used instead o
- Page 39 and 40: CALCULATIONS For Na3Fe(CN) 6 g/L Na
- Page 41: Cerimetric Determination of Sodium
- Page 45 and 46: Bias Bias is a statistically signif
- Page 47 and 48: Spectrophotometric Determination of
- Page 49 and 50: APPARATUS Pipet (40-mL) Graduated C
- Page 51 and 52: B. Analysis of Standards 1. Run eac
- Page 53 and 54: Determination of Ferrous Iron in EA
- Page 55 and 56: PROCEDURE Blank 1. Set a double-bea
- Page 57 and 58: APPENDIX B This appendix contains t
- Page 59 and 60: Titrimetric Determination of Hypo I
- Page 61 and 62: Recovery Recovery is used instead o
- Page 63 and 64: Recovery Recovery is used instead o
- Page 65 and 66: B. Thiosulfate Determination 1. Sam
- Page 67 and 68: Example Potentiometric Calculations
- Page 69 and 70: Spectrophotometric Determination of
- Page 71 and 72: APPARATUS Double Beam Spectrophotom
- Page 73 and 74: APPENDIX II This appendix contains
- Page 75 and 76: Spectrophotometric Determination of
- Page 77 and 78: Calculations a. Range: 0.5-2.5 g/L
- Page 79 and 80: APPENDIX 2 Typical Absorptivity mL
- Page 81 and 82: Spectrophotometric Determination of
- Page 83 and 84: APPARATUS All volumetric glassware
- Page 85 and 86: Procedure Preparation of 10 g/L Iro
- Page 87 and 88: Determination of Total Iron in East
- Page 89 and 90: Determination of Total Iron in East
- Page 91 and 92: Determination of Total Iron in EAST
Potentiometric Determination of Ferrocyanide in Process ECN Ferricyanide Bleach and<br />
Ferrocyanide Stock Solutions<br />
ECN-0020-01<br />
Process ECN-2 ECP-2D VNF-1/LC RVNP<br />
Formulas SR-29 — — —<br />
INTRODUCTION<br />
Ferrocyanide is determined by an oxidation titration with<br />
standardized sulfato cerate in an acid solution. The reaction<br />
is:<br />
Ce +4 + Fe(CN) 6 4- → Ce +3 + Fe(CN) 6 3-<br />
The endpoint of the titration is detected<br />
potentiometrically. The electrodes used for the titration are a<br />
platinum indicator electrode and a double junction reference<br />
electrode. Results are reported in terms of potassium<br />
ferrocyanide trihydrate, K 4Fe(CN) 6 3H 2O.<br />
This method requires handling potentially hazardous<br />
chemicals. Consult the Material Safety Data Sheet for each<br />
chemical before use. MSDS's are available from your<br />
chemical supplier.<br />
Sample<br />
Mean<br />
(g/L K 4 Fe(CN) 6 3H 2 O) N<br />
PRECISION AND BIAS<br />
Repeatability Standard Deviation, 1sr and 95<br />
Percent Confidence Estimate (not including Bias)<br />
Repeatability standard deviation is an estimate of the<br />
variability one trained analyst should be able to obtain under<br />
favorable conditions (analyzing a sample, with one<br />
instrument, within one day).<br />
The 95 percent confidence estimate (calculated using the<br />
repeatability standard deviation) around a single test result<br />
will include the mean value 95 percent of the time.<br />
To obtain the repeatability data, a single skilled analyst<br />
performed three (3) replicates on each of the following<br />
solutions during methods development.<br />
1. A “fresh” ferricyanide bleach prepared with all<br />
components at their respective “working tank” aim<br />
concentrations.<br />
2. The same “fresh” solution as in number 1, above,<br />
reanalyzed after making an <strong>analytical</strong>ly weighed,<br />
standard addition of 4.9452 g/L K4Fe(CN) 6 3H2O. 3. A “seasoned” ferricyanide bleach analyzed<br />
potentiometrically as received, at 3.5057 g/L<br />
K4Fe(CN) 6 3H2O. 4. The same “seasoned” solution as in number 3, above,<br />
reanalyzed after making an <strong>analytical</strong>ly weighed,<br />
standard addition of 1.0280 g/L K4Fe(CN) 6 3H2O. K 4 Fe(CN) 6 3H 2 O<br />
Repeatability Standard<br />
Deviation, 1s r<br />
(g/L K 4 Fe(CN) 6 3H 2 O)<br />
95 Percent Confidence<br />
Estimate<br />
g/L K 4 Fe(CN) 6 3H 2 O)<br />
“Fresh”<br />
“Fresh” plus<br />
0.073 3 0.0037 ± 0.016<br />
Standard<br />
Addition<br />
“Seasoned”,<br />
5.000 3 0.0024 ± 0.010<br />
As<br />
Received<br />
“Seasoned”<br />
3.506 3 0.0002 ± 0.001<br />
plus<br />
Standard<br />
Addition<br />
4.526 3 0.0023 ± 0.010<br />
<strong>Processing</strong> KODAK Motion Picture Films, Module 3, Analytical Procedures H24.03 1