An undergraduate laboratory experiment is described to measure Henry's law constants of organic compounds using a bubble column and gas chromatography flame ionization detector (GC-FID). This experiment is designed for upper-division undergraduate laboratory courses and can be implemented in conjunction with physical chemistry, analytical chemistry, environmental chemistry, and toxicology laboratory courses. This experiment can be used to determine solubilities of organic compounds that have important implications in atmospheric chemistry and water pollution and build a useful database through undergraduate experiments. (Contains 2 tables and 4 figures.)