Tasks for October 22
- To analyse films in Bisphenol A (BPA)
- To finish film synthesis from Oct. 17
- To finish measuring density of films (Reported on 17/10 Notebook entry)
Completion of film synthesis
Placed film in sodium sulfate, 1% HCl and sodium bicarbonate.
Measuring absorbance of films in BPA
- Soaked PVA-Clay polymer films in 10.4 ppm BPA and allowed to soak for a determined amount of time ( two scintillation vials for each time slot), after which time films were removed to avoid further absorption of PBA.
- 10/22 5 min
- 10/22 15 min
- 10/22 30 min
- 10/22 60 min
- 10/22 120 min
- 10/22 afternoon
- 10/23 morning
- 10/23 afternoon
- 10/24
- Note that the 10.4 ppm BPA solution was made by James and Eleni
- James measured out 10.4 mg of BPA and dissolved in 5 mL of methanol, then diluted to 1 L with distilled water.
Sample
|
Vial
|
Mass of Empty Vial (g)
|
Mass of Film + Vial (g)
|
Film Mass (g)
|
GC-MS |
10/22 5 min |
13.0961 |
13.2417 |
0.1456
|
|
10/22 15 min |
13.0637 |
13.1933 |
0.1296
|
|
10/22 30 min |
13.0670 |
13.2869 |
0.2199
|
|
10/22 60 min |
13.0693 |
13.2071 |
0.1378
|
|
10/22 120 min |
13.0977 |
13.3447 |
0.2470
|
|
10/22 afternoon |
13.0519 |
13.2186 |
0.1667
|
|
10/23 morning |
13.0361 |
13.1181 |
0.0820
|
|
10/23 afternoon |
13.0016 |
13.1543 |
0.1527
|
|
10/24 |
13.0731 |
13.2344 |
0.1613
|
HPLC |
10/22 5 min |
13.0393 |
13.2924 |
0.2531
|
|
10/22 15 min |
13.0428 |
13.1814 |
0.1386
|
|
10/22 30 min |
13.0879 |
13.3509 |
0.2630
|
|
10/22 60 min |
13.1562 |
13.3389 |
0.1827
|
|
10/22 120 min |
13.1078 |
13.2840 |
0.1762
|
|
10/22 afternoon |
13.0813 |
13.1784 |
0.0971
|
|
10/23 morning |
13.1008 |
13.2877 |
0.1869
|
|
10/23 afternoon |
13.0785 |
13.2066 |
0.1281
|
|
10/24 |
13.0254 |
13.1791 |
0.1537
|
|