Clausius-Clapeyron: Calculation of H vap for PCB congeners at - PowerPoint PPT Presentation

Clausius-Clapeyron: Calculation of ∆ H vap for PCB congeners at Dexter, Michigan

PCB 18: Doug Clausius-Clapeyron: Heat of Vaporization of PCB 18 -29 0.00330 0.00340 0.00350 0.00360 0.00370 0.00380 0.00390 0.00400 -29 -30 -30 y = -3176.8x - 19.107 R 2 = 0.3637 -31 -31 -32 -32 Inv e r se Te mpe r a t ur e ( K- 1) ∆ H vap = 26.4kJ/mol Henry’s Law Constant: 0.025kJ/mol

PCB 18: Doug Residuals 2 Homoscedascity?- A lot more dat a points early on. 1 0 0.00330 0.00340 0.00350 0.00360 0.00370 0.00380 0.00390 0.00400 -1 -2 Inv e r se Te mp ( K- 1)

PCB 18: Doug The low Significance F value of 3.4E-7 indicates there is a 95% confidence that there is a low correlation (R 2 = 0.36) between ln(P) and T -1 based on the data at Dexter.

PCB 33: Brad ∆ H vap = 38.9 kJ/mol Henry’s Law Constant: 0.0162 kJ/mol

PCB 33: Brad Residual Plot for Dexter, MI (2,3,4-trichlorobiphenyl) 2 Residuals 0 0.0032 0.0034 0.0036 0.0038 0.004 -2 Temperature -1

PCB 33: Brad The low Significance F value of 7.12E-10 indicates there is a 95% confidence that there is a high correlation (R 2 = 0.51) between ln(P) and T -1 based on the data at Dexter.

PCB 56(60): Jenny Clausius- Clapeyron Plot of PCB Congener 5 6 ( + 6 0 ) for Dexter, Michigan -28.5 -29 y = -5559.1x - 11.078 R 2 = 0.6515 -29.5 ln( Partial Pressure) ( kPa) -30 -30.5 -31 -31.5 -32 -32.5 -33 3.30000E- 3.40000E- 3.50000E- 3.60000E- 3.70000E- 3.80000E- 3.90000E- 4.00000E- 03 03 03 03 03 03 03 03 I nv e r se Te m pe r a tur e ( 1 / K) ∆ H vap = 46.2 kJ/mol Henry’s Law Constant: 0.013kJ/mol

PCB 56(60): Jenny X Va r i a bl e 1 Re si dua l P l ot 1.5 1 0.5 0 3.30000E-03 3.40000E-03 3.50000E-03 3.60000E-03 3.70000E-03 3.80000E-03 3.90000E-03 4.00000E-03 -0.5 -1 -1.5 X Va r i a bl e 1

PCB 56(60): Jenny The low Significance F value of 3.4E-14 indicates there is a 95% confidence that there is a strong correlation (R 2 = 0.65) between ln(P) and T -1 based on the data at Dexter.

PCB 138: Vish Dexter (DEX) Congener 138 (+163) LN(P) VS 1000/T -29.5 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4 -30 -30.5 -31 P ) -31.5 N ( L y = -4.0956x - 17.44 -32 R 2 = 0.5653 -32.5 -33 -33.5 -34 1000/T ∆ H vap = 34.1 kJ/mol Henry’s Law Constant: 0.00688 kJ/mol

PCB 138: Vish Residual Plot 2.5 2 1.5 Residuals 1 0.5 0 -0.5 3.2 3.4 3.6 3.8 4 -1 -1.5 -2 X Variable 1

PCB 138: Vish The low Significance F value of 2.0E-11 indicates there is a 95% confidence that there is a strong correlation (R 2 = 0.56) between ln(P) and T -1 based on the data at Dexter.

Dexter, MI