AbstractBy using gas chromatography coupled with low‐ and high‐resolution electron‐impact mass spectrometry, low‐ and high‐resolution chemical ionization mass spectrometry, and Fourier transform infrared spectroscopy, eight straight‐chain aldehydes were identified in a water sample taken from the overflow pipe of a municipal sewer line that contained a combination of industrial and domestic sewage. This combination of infrared and mass spectral techniques yielded precise identifications ofn‐hexanal,n‐heptanal, 2‐heptenal,n‐octanal, 2‐octenal,n‐nonanal, 2‐decenal, and 2‐undecenal. These findings were significant because few straight‐chain aldehydes have been identified in the environment, and all those pr
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