User:Patrick Hampson/Notebook/chem471/2017/02/21
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Today
Run UV-Vis on samples that were prepared last lab Prepare samples for next lab UV-Vis Results:
The graphs above contain the absorbance data from our Arginine pH 4, 6, and 7 solutions. As can be seen from the graphs above, Arginine had a rather lackluster formation of nanoparticles. pH 4 and 6 were relatively similar in the range of absorbance throughout. pH 6 had a relatively significant shoulder in the range of 300 nm. pH 7 followed a similar trend to pH 4, but had a slightly lower absorbance than either of the other two solutions.
The graphs above contain absorbance data from our Cysteine pH 4, 6, and 7 solutions. All of the solutions had significant absorbance at 380 nm. This could be due to the precipitate that had formed in all of the solutions. Solution of pH 6 had significantly higher absorbance than the other two solutions at 380 nm, and required a dilution series. Upon dilution, a small shoulder appeared in the 350 nm, as well as in the 250 nm range.
The graphs above contain absorbance values for our Glutamine pH 4, 6, and 7 solutions. Soltuions of pH 4 and 7 did not create anything remarkable, and did not absorb significantly throughout the spectrum. The solution of pH 6 had higher absorbance than the other two solutions, and even had a small peak around 530 nm, which is were we expect a species of nanoparticles to appear. | |
