User:Madeleine Y. Bee/Notebook/CHEM-581 Experimental Chemistry/2014/09/19

CHEM 581: Experimental Chemistry

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September 19, 2014 Procedures Soaking Films in As and Hg Film Solution Vial mass Vial + film mass Film mass PVA film 150 ppm As 13.0969g 13.2069g 0.11g 100 ppm As 13.1262g 13.2127g 0.0865g 50 ppm As 13.1340g 13.2340g 0.100g 150 ppm Hg 13.0145g 13.1050g 0.0905g 100 ppm Hg 13.0742g 13.1521g 0.0779g 50 ppm Hg 13.1254g 13.2356g 0.1102g PVA-Clay film 150 ppm As 13.1197g 13.2435g 0.1238g 100 ppm As 13.0765g 13.1374g 0.0609g 50 ppm As 13.1298g 13.2529g 0.1231g 150 ppm Hg 13.1706g 13.2172g 0.0466g 100 ppm Hg 13.1208g 13.1908g 0.0700g 50 ppm Hg 13.1493g 13.2317g 0.0824g 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) 2mL in 50mL volumetric (3738.56 ppm)(V)=(100ppm)(50mL) 1.34mL in 50mL volumetric (3738.56 ppm)(V)=(50ppm)(50mL) 0.668mL in 50mL volumetric Note: As dilutions done by Eleni<br.> 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 Note: Hg dilutions done by Madeleine<br.> Data