CHEM 581: Experimental Chemistry
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September 19, 2014
Procedures
Make New PVA and PVA-Clay Films
Soaking Films in As and Hg
Film
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Solution
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Vial mass
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Vial + film mass
|
Film mass
|
PVA film |
150 ppm As |
13.0969g |
13.2069g |
|
|
100 ppm As |
13.1262g |
13.2127g |
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|
50 ppm As |
13.1340g |
13.2340g |
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|
150 ppm Hg |
13.0145g |
13.1050g |
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|
100 ppm Hg |
13.0742g |
13.1521g |
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50 ppm Hg |
13.1254g |
13.2356g |
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PVA-Clay film |
150 ppm As |
13.1197g |
13.2435g |
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|
100 ppm As |
13.0765g |
13.1374g |
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50 ppm As |
13.1298g |
13.2529g |
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150 ppm Hg |
13.1706g |
13.2172g |
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100 ppm Hg |
13.1208g |
13.1908g |
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50 ppm Hg |
13.1493g |
13.2317g |
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- Dilutions:
- 0.0499 mol As/L × 74.921 g As/mol × 1000 mg/g = 3738.56 mg/L = 3738.56 ppm
- (3738.56 ppm)(V)=(150ppm)(50mL)
- (3738.56 ppm)(V)=(100ppm)(50mL)
- 1.34mL in 50mL volumetric
- (3738.56 ppm)(V)=(50ppm)(50mL)
- 0.668mL in 50mL volumetric
- As dilutions done by James
- 268 ppm Hg (13.4 mM HgCl2)
- (268 ppm)(V)=(150 ppm)(50mL)
- 27.98mL in 50mL volumetric
- (268 ppm)(V)=(100 ppm)(50mL)
- 18.66mL in 50mL volumetric
- (268 ppm)(V)=(50 ppm)(50mL)
- 9.33mL in 50mL volumetric
- Hg dilutions done by Madeleine
Data
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