Dye Addition trial 2
- New samples with dye addition were made due to issues with UV-Vis previously experienced. A more dilute stock solution of R6G was made so that moresubstantial amounts of R6G could be added into the samples.
- The total amount of sample needed was 1.5mL (both magnetite and dye)
Table 1: .001M R6G stock preparation in Methanol
stock concentration (M)
|
0.003987
|
desired total volume (L) |
0.01
|
desired new concentration |
0.001
|
amount of R6G to be added (L) |
0.002508151
|
amt. methanol to be added (L) |
0.007491849
|
Table 2: Amount of dye added into each sample to achieve desired internal concentration
sample number
|
desired concentration of dye in each sample
|
volume of dye added (L)
|
in mL
|
in uL
|
volume of magnetite sample added (mL)
|
1 |
0.00002 |
0.00003 |
0.03 |
30 |
1.47
|
2 |
0.00004 |
0.00006 |
0.06 |
60 |
1.44
|
3 |
0.00006 |
0.00009 |
0.09 |
90 |
1.41
|
4 |
0.00008 |
0.00012 |
0.12 |
120 |
1.38
|
5 |
0.0001 |
0.00015 |
0.15 |
150 |
1.35
|
6 |
0.00015 |
0.000225 |
0.225 |
225 |
1.275
|
7 |
0.0002 |
0.0003 |
0.3 |
300 |
1.2
|
|