State-of-the-Art of Sampling and Analysis for Diesel Exhaust Contaminants

摘要

Over 1,500 literature citations related to diesel exhaust sampling and analysis were obtained as a result of computer and manual searches of 9 data bases. Abstracts and hard copies of relevant citations were reviewed and those considered appropriate for evaluation were included in a bibliography. Based on the literature collected, available sampling and analysis methods for the following diesel exhaust contaminants were evaluated: CO, CO2, NO, NO2, hydrocarbons, particulates, PNA, SO4, and oxygenates. Emphasis was given to laboratory and field methods for these species. Methods were evaluated on the basis of sensitivity, selectivity, accuracy, and reliability and a selected list of preferred methods was developed for each compound class. The selected methods were additionally evaluated through communication with current investigators. Sampling and analysis methods for all compounds except CO and CO2 showed some unreliability. Recommendations were made for future research to develop, improve, and validate methods.