... KEYWORDS: oxygenated organics, PANs, acetone Citation: Singh, H B., et al (2004), Analysis of the atmospheric distribution, sources, and sinks of oxygenated volatile organic chemicals based on measurements ... showing the separation and detection of oxygenated organic species in ambient air aboard the NASA DC-8 during TRACE-P Some of these measurements were duplicated using independent techniques and have ... ‘‘pollution filter’’ based on the lower two quartiles of the CO and C2Cl4 mixing ratios was employed to mitigate the effect of pollution Figure shows the CO mixing ratios as a function of latitude and...