# User:Carly M. Montanero/Notebook/CHEM-571/2014/04/08

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## Revision as of 12:14, 9 April 2014

Biomaterials Design Lab: Spring 2014 Main project page
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## Objective

• Take conductivity measurements on room temperature solutions from 3/26/14.
• Run UV-Vis and AA on solutions at 4°C from 3/26/14.

## Procedure

### Atomic Absorption Preparation

Creating the Gold Stock Solutions

1. Add 50 μL of HAuCl4·3H2O and 4950 μL of distilled water to a Falcon tube, for a final concentration of 10 μg/mL Au.
2. Add 100 μL of HAuCl4·3H2O and 4900 μL of distilled water to a Falcon tube, for a final concentration of 20 μg/mL Au.
3. Add 150 μL of HAuCl4·3H2O and 4850 μL of distilled water to a Falcon tube, for a final concentration of 30 μg/mL Au.
4. Add 200 μL of HAuCl4·3H2O and 4800 μL of distilled water to a Falcon tube, for a final concentration of 40 μg/mL Au.
5. Add 250 μL of HAuCl4·3H2O and 4750 μL of distilled water to a Falcon tube, for a final concentration of 50 μg/mL Au.

Atomic Absorption Samples

Solutions with the following Au:lysozyme ratio at room temperature were run on the AA:

• 30:1 lysozyme-AuNP with 0.03 M MgCl2, CaCl2, NaCl, KCl, MES, citric acid (0.0002316 M 2,2 bipyridine)
• 30:1 lysozyme-AuNP with 0.06 M MgCl2, CaCl2, NaCl, KCl, MES, citric acid (0.0004544 M 2,2 bipyridine)
• 30:1 lysozyme-AuNP with 0.09 M MgCl2, CaCl2, NaCl, KCl, MES, citric acid (0.0006772 M 2,2 bipyridine)