Quantitative prediction of K values

Introduction

Fragment models
sp-LFERs
pp-LFERs
Comparison of the various methods
Predictive models based on molecular structure

Critical remarks on approaches from chemical engineering

Selftest
Problems
     Problem 1
     Problem 2
     Problem 3
           Answer
     Problem 4
           Answer
     Problem 5
           Answer
     Problem 6
           Answer
     Problem 7
     Problem 8
     Problem 9

Problem 5

Aerosols are a complex mixture of minerals, salts, water, organic matter and soot. Depending on the actual situation, sorption of organic pollutants from air to aerosols may be dominated by adsorption or absorption to one or several of these phases.
You have collected 3 aerosol samples at various locations and measured sorption constants of nonane and decane at 25 °C. The results of Ki aerosol/air in [Lair/gaerosol] are shown in the following table:

 

Sample A

Sample B

Sample C

nonane

15

30

15

decane

48

96

70

What can you conclude from these results with respect to the properties of the aerosols?