The report gives Level 2 procedures, including results of a laboratory evaluation of detailed methods for analyzing organic chemicals in particular compound categories. The report, supplementing an earlier Level 2 procedures manual, provides an initial experimental data base as a resource for laboratories undertaking Level 2 studies. The Level 2 methods were designed to provide more detailed and more accurate data concerning specific compounds whose presence in the sample could be inferred on the basis of the categorical analysis of Level 1. A systematic laboratory evaluation of the methods for Level 2 analysis of each major category of organic compounds was conducted. Methods were evaluated using sets of model compounds spanning a range of molecular weights and boiling points in each category. Evaluation criteria included: detection limit, retention time, chromatographic resolution, and precison and accuracy of the method. Specific detailed Level 2 methods have been recommended for 25 categories of organic compounds. Most of the primary recommendations are based on packed-column gas-chromatography/mass-spectrometry, with alternative procedures suggested where appropriate for particular sample matrices or compound types. Analytical data using the specified example conditions are usually illustrated for each recommended method.

Caption title. "March 1981." Includes bibliographical references. "EPA-600/7-81-029." Microfiche.

Includes bibliographical references.