ch. 1. Hydrocarbons -- ch. 2. Alcohols and phytosterols -- ch. 3. Aldehydes and ketones -- ch. 4. Carboxylic acids -- ch. 5. Esters -- ch. 6. Lactones -- ch. 7. Anhydrides -- ch. 8. Carbohydrates and their derivatives -- ch. 9. Phenols and quinones -- ch. 10. Ethers -- ch. 11. Nitriles -- ch. 12. Acyclic amines -- ch. 13. Amides -- ch. 14. Imides -- ch. 15. N-nitrosamines -- ch. 16. Nitroalkanes, nitroarenes, and nitrophenols -- ch. 17. Nitrogen heterocyclic components -- ch. 18. Miscellaneous components -- ch. 19. Fixed and variable gases -- ch. 20. Metallic and nonmetallic elements, isotopes, ions, and salts -- ch. 21. Pesticides and growth regulators -- ch. 22. Genes, nucleotides, and enzymes -- ch. 23. Hoffmann analytes -- ch. 24. Tobacco and/or tobacco smoke components used as tobacco ingredients -- ch. 25. Pyrolysis -- ch. 26. Carcinogens, tumorigens, and mutagens vs. anticarcinogens, inhibitors, and antimutagens -- ch. 27. Free radicals -- ch. 28. Summary.